Molecular diagnosis of putative Stargardt disease probands by exome sequencing
PMID: 22863181
Gene: ABCA4
HGNC ID: 34
Molecular diagnosis of putative Stargardt disease probands by exome sequencing
PMID: 22863181
Gene: ABCA4
HGNC ID: 34
Functional Relevance and Structural Correlates of Near Infrared and Short Wavelength Fundus Autofluorescence Imaging in ABCA4-Related Retinopathy
PMID: 31879568
Gene: ABCA4
Disease: ABCA4-Related Retinopathy
Monoallelic ABCA4 Mutations Appear Insufficient to Cause Retinopathy: A Quantitative Autofluorescence Study
PMID: 26720470
Gene: ABCA4
Disease: retinopathy
Screening of reported pathogenic variants in ABCA4 for Stargardt (STGD) The disease prevalence of STGD is estimated as 1 in 10000 individuals4. It has been estimated that about 70% of STGD patients carry variants in ABCA45. Therefore, this represents the scenario of a recessive disease with a relatively homogeneous genetic cause. We screened 945 reported pathogenic variants in ABCA4 genes collected in HGMD. Among them, 11 variants are likely benign, as their population AF in is higher than 0.7% (1/20000‾‾‾‾‾‾‾‾√)<math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="M11"><mrow><mrow><mo>(</mo><mrow><msqrt><mrow><mn>1</mn><mo>/</mo><mn>20000</mn></mrow></msqrt></mrow><mo>)</mo></mrow></mrow></math>, the cutoff based on STGD disease prevalence, therefore were excluded from further analysis. The remaining 934 variants were subjected to our test model. As a result, 26 variants with the AF in the range of 0.46% to 0.03% were identified as likely benign (Binomial test1, Bonferroni correction p-value ≤ 0.05/934 and test2 Bonferroni correction p-value > 0.05/934) (Figure 3A).
This variant is reported in Table S6, but only location, predictions, frequencies, etc are reported for it, not cases.
Screening of reported pathogenic variants in ABCA4 for Stargardt (STGD) The disease prevalence of STGD is estimated as 1 in 10000 individuals4. It has been estimated that about 70% of STGD patients carry variants in ABCA45. Therefore, this represents the scenario of a recessive disease with a relatively homogeneous genetic cause. We screened 945 reported pathogenic variants in ABCA4 genes collected in HGMD. Among them, 11 variants are likely benign, as their population AF in is higher than 0.7% (1/20000‾‾‾‾‾‾‾‾√)<math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="M11"><mrow><mrow><mo>(</mo><mrow><msqrt><mrow><mn>1</mn><mo>/</mo><mn>20000</mn></mrow></msqrt></mrow><mo>)</mo></mrow></mrow></math>, the cutoff based on STGD disease prevalence, therefore were excluded from further analysis. The remaining 934 variants were subjected to our test model. As a result, 26 variants with the AF in the range of 0.46% to 0.03% were identified as likely benign (Binomial test1, Bonferroni correction p-value ≤ 0.05/934 and test2 Bonferroni correction p-value > 0.05/934) (Figure 3A).
This variant is reported in Table S6, but only location, predictions, frequencies, etc are reported for it, not cases.
Stargardt Disease Due to an Intronic Mutation in the ABCA4: A Case Report
PMID: 36471740
Gene: ABCA4
HGNC ID: 34
ABCA4
Unable to find this variant in the text or supplementary even though Mastermind says it's in supplemental MOESM1
F17-003
Case#: Patient 225, Female, age of onset 7 y.o, Poland
DiseaseAssertion: STGD-1
FamilyInfo: no given family information.
CasePresentingHPOs: HP:0007722, HP:0000608, HP:0025158
CaseHPOFreeText: RPE atrophy, macular degeneration, central hyper-autofluorescence in fundus autofluorescence
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a, non-proband identified HPO's mentioned, but not assignable to individual proband.
Genotyping Method: DNA isolated from peripheral blood from patients and relatives via MagNA Pure 24, samples screened with MIPs targeting 108 genes involved in pathogensis of IRD's. PCR completed on library, analysed with NGS fragment analysis kit.
PreviouslyPublished: yes
Variant: c.[1622T>C;3113C>T]
ClinVar: 99067, 7894
CAID: n/a
gnomeAD 0.0001266 allele frequency
SupplementalData: Fig1: List of families displaying pseudo-dominant inheritance. Fig2: Number of alleles for most common variants.
WDR19-associated retinopathy presenting with adult-onset Stargardt-likephenotype
PMID:39967245
Gene: ABCA4
HGNC ID: 34
Case#:39 man
DiseaseAssertion:NA
FamilyInfo:NA
CasePresentingHPOs:Snellen in both eye, visual impairment with night blindnessisual acuity was 20/20Snellen in both eyes, with a minor correction for astig-matism. The anterior segment and intraocular pressurewere within normal limits. On fundus examination, dif-fuse fleck-like lesions were scattered both inside and out-side the arcades, while sharply demarcated areas ofmacular atrophy with foveal sparing, more pronouncedin the left eye, were visible.
CaseHPOFreeText:NA
CaseNotHPOs:NA
CaseNotHPOFreeText:
Genotyping Method:Next-Generation Sequencing (NGS), using theTruSight One Clinical Exome sequencing panel on anIllumina NexSeq500 platform, enriching for 4800 genesincluding ABCA4, CNGB3, ELOVL4, PROM1, and PRPH2
PreviouslyPublished:Under refernces?
Variant:WDR19 variants:the novel deletion at c.1777 + 1 within the donor splicingsite (class 4) and the rare c.1430 G>T variant causing theamino-acid substitution p.(Arg477Leu) (class 3) in the putative protein. Additionally, a heterozygous c.1793A>G(class 3) variant in the CDH23 gene was found, though it was deemed as not contributive to the patient’s clinical phenotype. All reported variants were confirmed throughSanger sequencing
ClinVar:NA
CAID:NA
SupplementalData:NA
Focal choroidal excavation in Stargardt’s dystrophy
PMID: 32843395
Gene: ABCA4
Disease: Stargardt
The STGD patient from Family 12 is a compound heterozygous with p.Val931Met and a novel nonsense mutation at exon 33 (p.Glu1574X; Figure 1B). Disease onset for this patient was at age 43. Ophthalmic examination revealed moderate central retinal changes, decreased mfERG responses exclusively in the central 15 degrees, and decreased visual acuity.
Case#: Family 12 Proband, male, 43yo at onset, Portuguese
DiseaseAssertion: Stargardt
FamilyInfo: no affected family members in pedigree (Fig. 1)
CasePresentingHPOs: HP:0007663
CaseHPOFreeText: "The criteria for STGD phenotype included bilateral central vision loss and pigmentary macular lesions, normal caliber of retinal vessels, absence of pigmented bone spicules, and compatibility with recessive mode of inheritance." Moderate central retinal changes, decreased mfERG responses exclusively in the central 15 degrees
CaseNotHPOs:
CaseNotHPOFreeText:
PreviouslyPublished: n/a
Variant: p.Glu1574X; p.Val931Met. Several other polymorphisms also reported. ABCR400 gene chip microarray, DHPLC
ClinVar: 1460063
CAID: CA341283936
SupplementalData: n/a
Personalized genetic counseling for Stargardt disease: Offspring risk estimates based on variant severity
PMID: 35120629
Gene: ABCA4
Disease: Stargardt disease
PAPER USED TO SCORE PS4
ABCA4 gene sequence variations in patients with autosomal recessive cone-rod dystrophy
PMID: 12796258
Gene: ABCA4
Disease: autosomal recessive cone-rod dystrophy
Phenotype/genotype correlation in a case series of Stargardt's patients identifies novel mutations in the ABCA4 gene
PMID: 23949494 HGNC: 34 Gene: ABCA4 DiseaseAssertion: Stargardt Disease
Mutation scanning and direct DNA sequencing of all 50 exons of ABCR were completed for 150 families segregating recessive Stargardt disease (STGD1). ABCR variations were identified in 173 (57%) disease chromosomes, the majority of which represent missense amino acid substitutions. These ABCR variants were not found in 220 unaffected control individuals (440 chromosomes) but do cosegregate with the disease in these families with STGD1, and many occur in conserved functional domains. Missense amino acid substitutions located in the amino terminal one-third of the protein appear to be associated with earlier onset of the disease and may represent misfolding alleles. The two most common mutant alleles, G1961E and A1038V, each identified in 16 of 173 disease chromosomes, composed 18.5% of mutations identified. G1961E has been associated previously, at a statistically significant level in the heterozygous state, with age-related macular degeneration (AMD). Clinical evaluation of these 150 families with STGD1 revealed a high frequency of AMD in first- and second-degree relatives. These findings support the hypothesis that compound heterozygous ABCR mutations are responsible for STGD1 and that some heterozygous ABCR mutations may enhance susceptibility to AMD.
Annotating here since the full text is a PDF.
Case#: Family AR321 proband, US, 6yo at onset
DiseaseAssertion: Stargardt
FamilyInfo: proband and two other siblings are affected
CasePresentingHPOs: The essential and defining features of STGD were (1) pedigrees with at least one living affected individual compatible with autosomal recessive inheritance; (2) an ophthalmoscopically characteristic retinal disorder in families with both parents living; (3) bilateral central visual loss with both “beaten metal” elliptical foveal dystrophy and temporal pallor of the optic discs, documented by retinal color photography, with or without yellow-pigment epithelial flecks in the macular and/or retinal “near periphery”; and (4) the characteristic fluorescein angiographic feature of a dark choroid (Blacharski 1988).
CaseHPOFreeText:
CaseNotHPOs:
CaseNotHPOFreeText: (1) evidence of autosomal dominant inheritance; (2) any history of night blindness, loss of peripheral vision, or "retinitis pigmentosa"; (3) cataracta complicata or cells in the vitreous; (4) substantially abnormal electroretinographic or electrooculographic responses; (5) no fluorescein angiography performed or no dark choroid documented; (6) neurological disease (including loss of cognition or seizures); 7) drug exposures (especially to antimalarial and agents known to cause crystalline retinopathies); or (8) any "atypical" maculopathies in which a unique diagnosis of STGD could not be established.
PreviouslyPublished: PMID: 8533764
Variant: c.3113C>T p.A1038V; c.1715G>C p.R572P . Heteroduplex and SSCP analyses were used to screen the 50 exons of ABCA4. Linkage analysis and haplotype analysis were previously performed
ClinVar: 99073
CAID: CA226919
SupplementalData: n/a
Functional Analysis and Classification of Homozygous and Hypomorphic ABCA4 Variants Associated with Stargardt Macular Degeneration
PMID: 32845050
Gene: ABCA4
Disease: Stargardt Macular Degeneration
JB260 Stargardt ABCA4 c.6119G>A p.Arg2040Gln rs148460146 Zernant et al (2014)50 c.2879del p.Ala960Aspfs*17 N/A
Case#: Bryant Subject JB260, US
DiseaseAssertion: Stargardt
FamilyInfo:
CasePresentingHPOs: "Stargardt disease is a childhood-onset macular degeneration and is most commonly caused by mutations in ABCA4. Characteristic yellow flecks are typically seen under the macula during a fundus exam."
CaseHPOFreeText:
CaseNotHPOs:
CaseNotHPOFreeText:
GenotypingMethod: WES; previously screened using arrayed primer extension (APEX) multigene panels for the relevant disease and no disease-causing variants had been identified; PCR and Sanger for verification
PreviouslyPublished: n/a
Variant: c.6119G>A p.Arg2040Gln; c.2879del p.Ala960Aspfs*17
CAID: CA232815
SupplementalData:
Molecular testing for hereditary retinal disease as part of clinical care
PMID: 17296903
Gene: ABCA4
Disease: hereditary retinal disease
An uncommon case of retinitis pigmentosa patients basedon clinical and genetic studyAyudha Bahana Bahana Ilham Perdamaian, MSc2, Dewi Kartikawati Paramita, PhD3, Riris Istighfari Jenie,PhD4, Supanji Supanji, PhD11Universitas Gadjah Mada Fakultas Kedokteran Kesehatan Masyarakat dan Keperawatan, 2Doctorate Program of Health andMedicine Science, Faculty of Medicine, Public Health, and Nurse, Universitas Gadjah Mada, Yogyakarta, Indonesia. Departmentof Ophthalmology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, 3Department of Histology andMolecular Biology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia,Integrated Research Laboratory, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakar,4Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gadjah Mada University, Yogyakarta, IndonesiaCASE REPORTThis article was accepted: 25 August 2024Corresponding Author: Supanji SupanjiEmail: supanji@ugm.ac.id19-An uncommon00304.qxp_3-PRIMARY.qxd 29/08/2024 3:47 PM Page 98
PMID:39215425
Gene: ABCA4
HGNC ID: 34
case27-year-old male, the brother of case 1
DiseaseAssertion: Table 1 The summary of the clinical assessment of IRD patients’ family in this research fro there down they did a whole pannel on the family
Pedigree one can be fore form the beggginnings of case presention section?
CasePresentingHPOs: Case 2, a 27-year-old male, the brother of case 1 had blurry vision which was not corrected with an eyeglass and inconveniences under bright light starting from 14 years ago. Case 2 also underwent a fundus examination after finding that case 1 was RP. In further examination of those patients and their family members found that case 1 was confirmed as RP and case 2
CaseHPOFreeText:NA
CaseNotHPOs:NA
CaseNotHPOFreeText:NA
Genotyping Method:NA
PreviouslyPublished:NA
Variant:NA
ClinVar:
CAID:NA
SupplementalData:NA
Inheritance pattern Autosomal Recessive
See Supplementary Table S2 for a complete genotypic glossary of the cohort.
Case#: Patients were identified from the inherited retinal disease (IRD) database at UC San Diego (UCSD).
DiseaseAssertion: RP with macular edema
FamilyInfo:
CasePresentingHPOs:
CaseHPOFreeText: Dx of RP based on "a history of progressive peripheral vision loss or nyctalopia, and ocular examination findings of RP including bone spicule pigmentation, disc pallor and attenuated vessels and genetic confirmation."
CaseNotHPOs:
CaseNotHPOFreeText:
GenotypingMethod: Next-generation sequencing (NGS), exome sequencing, and/or targeted Sanger sequencing were the primary genetic testing approaches.
PreviouslyPublished: PMID:10206579 is referenced but it seems a reference to the variant and not the proband
Variant: c.6383A>G (p.His2128Arg); c.3G>T (p.Met1?). phase unknown
ClinVar: 99455
CAID: CA227399
SupplementalData: Variant is found in table S2
20 years Age of onset 3 years 9 years
38/20 20 0.225 95 16 2 1 1 3 4 L541P G1961E
another patient with the 541 variant potentially not in cis with ala1038val. G1961E has been classified as pathogenic by the ABCA4 VCEP
31/19 17 0.1 102 9 3 2 2 3 4 L541P F655C
another patient with the 541 variant potentially not in cis with ala1038val. F655C is path/LP in clinvar
13/8 35 0.017 163 0 – 3 – 3 4 L541P R1098C
Case#: Patient 13, 35yo
DiseaseAssertion: STGD
FamilyInfo: Family 8
CasePresentingHPOs:
CaseHPOFreeText: Visual acuity=0.017. OCT ft (μm)=163. MP (dB)=0. Fundus=3(extensive atrophic-appearing RPE changes). ERG=3(abnormal responses involving both rods and cones). mfERG=4(subnormal mfERG in the entire test field (0°–30°) plus pathologic Ganzfeld ERG).
CaseNotHPOs:
CaseNotHPOFreeText:
GenotypingMethod: PCR of coding regions, intron/exon boundaries, and 5′ and 3′ regions of ABCA4; Standard cycle-sequencing reactions with BigDye Terminator
PreviouslyPublished:
Variant: L541P; R1098C
CAID: CA226911;
SupplementalData: n/a
Cases 4–7
Case#: 4, 34 year old male
DiseaseAssertion: Stargardt Disease
FamilyInfo: NR
CasePresentingHPOs: NR
CaseHPOFreeText: NR
CaseNotHPOs:
CaseNotHPOFreeText: NR
Genotyping Method: Analyzing the ABCA4 gene
PreviouslyPublished: NR
Variant: 4469G>A
ClinVar: NR
CAID: NR
SupplementalData: NR
Phenotype/genotype correlation in a case series of Stargardt's patients identifies novel mutations in the ABCA4 gene
PMID: 23949494 HGNC: 34 Gene: ABCA4 DiseaseAssertion: Stargardt Disease
STGD1 represents the most prevalent inherited macul-opathy, estimated to occur in 1 in 10,000 individuals.
gnomad 0.0001 frequency
Therefore,a lower homozygous frequency in the BAP dataset than expectedbased on the AF in the general population indicates that a variantis mild
I don't understand what this means, but how I interepret it is if an homozygous STGD1 variant appears at a lower frequency that it is less severe.
Therefore,a lower homozygous frequency in the BAP dataset than expectedbased on the AF in the general population indicates that a variantis mild
I don't understand what this means, but how I interepret it is if an homozygous STGD1 variant appears at a lower frequency that it is less severe.
(http://genetics.bwh.harvard.edu/pph2/). In addition, mutation taster predicted both L168F and L168S variant as disease-causing with PROVEAN predictions of L168F (-2.767) and L168S (-4.083) as deleterious (https://www.mutationtaster.org/). As such, it was not surprising that the L168S variant patient had much more severe disease onset and rapid progression compared to other SCA34-causing ELOVL4 variants. For example, a patient carrying the T233M ELOVL4 variant was reported to develop ataxia starting at 15 years of age [10]. However, at the time of examination of this patient at 60 years of age, an MRI of the brain showed only subtle flattening of the ventral pons and mild cerebellar atrophy [10]. Another patient carrying the Q180P ELOVL4 variant developed ataxia in his mid-20 s and showed cerebellar and pontine atrophy [11]. Japanese patients also carrying the W256G variant developed gait ataxia between 13–56 years of age [12]. However, disease progression was reported to be very slow, and patients did not require assistance with walking with a walker or cane until the age of 60 years or older [12]. Taken together, it looks like the nature of the mutation and its effect on normal ELOVL4 function most likely through defects in VLC-FA biosynthesis or conformational changes in protein structure are critical to disease onset and severity of the pathologies.
SupplementalData:
(http://genetics.bwh.harvard.edu/pph2/). In addition, mutation taster predicted both L168F and L168S variant as disease-causing with PROVEAN predictions of L168F (-2.767) and L168S (-4.083) as deleterious (https://www.mutationtaster.org/). As such, it was not surprising that the L168S variant patient had much more severe disease onset and rapid progression compared to other SCA34-causing ELOVL4 variants. For example, a patient carrying the T233M ELOVL4 variant was reported to develop ataxia starting at 15 years of age [10]. However, at the time of examination of this patient at 60 years of age, an MRI of the brain showed only subtle flattening of the ventral pons and mild cerebellar atrophy [10]. Another patient carrying the Q180P ELOVL4 variant developed ataxia in his mid-20 s and showed cerebellar and pontine atrophy [11]. Japanese patients also carrying the W256G variant developed gait ataxia between 13–56 years of age [12]. However, disease progression was reported to be very slow, and patients did not require assistance with walking with a walker or cane until the age of 60 years or older [12]. Taken together, it looks like the nature of the mutation and its effect on normal ELOVL4 function most likely through defects in VLC-FA biosynthesis or conformational changes in protein structure are critical to disease onset and severity of the pathologies.
SupplementalData:
Supplementary Table S6—Probands harbouring putative variants with incomplete penetrance;
This variant was found in Patient 074752 in cis with a nonsense (c.6088C>T) and in trans with an intronic variant (c.4253+43G>A); neither of which has been curated yet by the ABCA4 VCEP
W663X
Not sure if this variant is c.1988G>A or c.1989G>A.
Supplementary TableS10
This variant is listed for Stargardt DNAID#067322 in trans with c.5603A>T p.(Asn1868Ile). No phenotype information provided.
The proband (Patient #20
Case#: Female, family #5, Patient #20
DiseaseAssertion: STGD
FamilyInfo: Proband's sister presented with same clinical prognosis. Sister diagnosed with pattern dystrophy and photoaversion at age 57, with difficulty seeing at night. Sister has nuclear sclerotic and cortical cataracts in both eyes.
CasePresentingHPOs: HP:0000662, HP:0000603, HP:0000603, HP:0000493
CaseHPOFreeText: Proband presented with localized blur at age 62, (late onset) in her left eye. BVCA 20/20-3 and 20/20-2 at age 70. Also has macular lesions with stage 2 fundus flecks.
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a
Genotyping Method: Genotyping performed at Columbia University, sequencing technology used is not disclosed.
PreviouslyPublished: n/a
Variant: p.N18681, IVS36:c.5196+1G>A
ClinVar: M2) 99067, M6) 99351
CAID: N/A
SupplementalData: Fig 1: Pedigree illustrating ABCA4 variants and the associated Stargardt phenotype for 5 families. Proband Labeled w/ white arrow for each family. Fig 2: retinal scan measuring melanin in 4 patients of family 2. Panel shows bull's-eye ring of RPE atropy. Fig 3: Macular SD-OCT line profile from b-scans. Reflectivity plotted against function of retinal depth. Table 1: table shows patients with p.N18681 variant, type of mutation, and pathogenicity class. Table 2: Patients, age on-set and first symptom
F17-003
Case#: Patient 225, Female, age of onset 7 y.o, Poland
DiseaseAssertion: STGD-1
FamilyInfo: no given family information.
CasePresentingHPOs: HP:0007722, HP:0000608, HP:0025158
CaseHPOFreeText: RPE atrophy, macular degeneration, central hyper-autofluorescence in fundus autofluorescence
CaseNotHPOs: n/a
CaseNotHPOFreeText: n/a, non-proband identified HPO's mentioned, but not assignable to individual proband.
Genotyping Method: DNA isolated from peripheral blood from patients and relatives via MagNA Pure 24, samples screened with MIPs targeting 108 genes involved in pathogensis of IRD's. PCR completed on library, analysed with NGS fragment analysis kit.
PreviouslyPublished: yes
Variant: c.[1622T>C;3113C>T]
ClinVar: 99067, 7894
CAID: n/a
gnomeAD 0.0001266 allele frequency
SupplementalData: Fig1: List of families displaying pseudo-dominant inheritance. Fig2: Number of alleles for most common variants.
4.4. Disease Course in Patients Harbouring p.(Gly1961Glu) or p.(Asn1868Ile) Allele
It is known that patients harbouring p.(Gly1961Glu) or p.(Asn1868Ile) allele share some common clinical characteristics and present with a milder disease phenotype than patients carrying other alleles. A typical feature of patients with p.(Gly1961Glu) is BEM, which is otherwise present in around 20% of all STGD1 patients.
4.4. Disease Course in Patients Harbouring p.(Gly1961Glu) or p.(Asn1868Ile) Allele
It is known that patients harbouring p.(Gly1961Glu) or p.(Asn1868Ile) allele share some common clinical characteristics and present with a milder disease phenotype than patients carrying other alleles. A typical feature of patients with p.(Gly1961Glu) is BEM, which is otherwise present in around 20% of all STGD1 patients.
Sequencing of the coding region of ABCA4 and of the entire ABCA4 locus revealed one heterozygous ABCA4 variant c.3113C>T; p.(Ala1038Val). No other (likely) pathogenic coding or noncoding ABCA4 variants including copy number variants were identified.
ABCA4 variant revealed but not target of research and doesn't seem to amount to anything Variantc.3113C>T p.(Ala1038Val)
Sequencing of the coding region of ABCA4 and of the entire ABCA4 locus revealed one heterozygous ABCA4 variant c.3113C>T; p.(Ala1038Val). No other (likely) pathogenic coding or noncoding ABCA4 variants including copy number variants were identified.
ABCA4 variant revealed but not target of research and doesn't seem to amount to anything Variantc.3113C>T p.(Ala1038Val)
10/22/MClinical, geneticPartial deletion, protein truncating mutation++++−
PatientID: 10
KindredID: 10
Case: M, 22Y0M, Caucasian
DiseaseAssertion: VHL
FamilyInfo: Positive family history.
CohortInfo: Case series of 14 patients with definite or presumed von Hippel-Lindau disease and retinal vascular proliferation.
CasePresentingHPOs: HP:0002011, HP:0001732, HP:0007850, HP:0012210, HP:0009711 (Morphological central nervous system abnormality, abnormality of the pancreas, retinal vascular proliferation, abnormal renal morphology, retinal capillary hemangioma)
CaseHPOFreeText: At age 12, his left eye had a large juxtapapillary vascular complex extending from the nerve along the superior arcade that was associated with dense fibrovascular tissue. During the next 29 months, this fibrovascular complex enlarged, extending into the center of the macula and causing a decrease in visual acuity to 20/80. The patient underwent pars plana vitrectomy and membrane peel. When the patient was reexamined 7 years after his surgery, there was no recurrence of the lesion. In the patient's contralateral right eye, 3 typical peripheral RCHs were observed during this 7-year follow-up. At age 14 years, he was also noted to have a small patch of superficial retinal vessels in the inferior retinal quadrant near the equator of the right eye that resembled an arteriovenous anastomosis.
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
CasePreviousTesting: N/A
PreviouslyPublished: N/A
SupplementalData: N/A
Variant: Partial Deletion
LegacyVariant: N/A
CaseProblemVariantFreeText: N/A
ClinVarID: N/A
CAID: N/A
gnomAD: N/A
VariantEvidence: N/A
MutationType: deletion
CivicName:Null (Partial deletion)
MultipleGeneVariants: N/A
Complete deletion
GroupID/ KindredID: 28
PatientID: II
Case: 24Y0M, Sex unknown, Polish
DiseaseAssertion: VHL
FamilyInfo: Family 28 consisted of 4 members; one relative (age 27Y) was found with multiple cerebellar HABs at 25Y, and multiple spinal HABs, another (40Y) diagnosed at 30Y with multiple cerebellar HABs, and multiple spinal HABs, and a final relative (62Y), diagnosed with a single HAB.
CasePresentingHPOs: HP:0006880 (cerebellar hemangioblastoma)
CaseHPOFreeText: Patient was diagnosed with a single cerebellar HAB at 24Y
GroupNotHPOs: HP:0009713; HP:0009711; HP:0005584 (spinal hemangioblastoma, retinal capillary hemangioma; renal cell carcinoma)
CaseNotHPOFreeText: N/A
CasePreviousTesting: N/A
PreviouslyPublished: N/A
SupplementalData: N/A
Variant: complete deletion of VHL gene
CaseProblemVariantFreeText: N/A
LegacyVariant: N/A
ClinVarID: N/A
CAID: N/A
gnomAD: N/A
VariantEvidence: Haplotype analysis information in Table 3
MutationType: deletion
CivicName: deletion
MultipleGeneVariants: N/A
4 partial deletions
GroupID/ KindredID: 22
Case: Age unknown, Sex unknown, Chinese
DiseaseAssertion: hemangioblastoma
FamilyInfo: No family history. Genetic testing of their parents confirmed a de novo mutation.
CasePresentingHPOs: HP:0010797 (hemangioblastoma)
CaseHPOFreeText: N/A
CaseNotHPOs: HP:0002666; HP:0005584; HP:0009711; HP:0001732 (pheochromocytoma; renal cell carcinoma; retinal capillary hemangioma; pancreatic lesion)
CaseNotHPOFreeText: N/A
CasePreviousTesting: N/A
PreviouslyPublished: N/A
SupplementalData: N/A
Variant: Exon 1 deletion
LegacyVariant: N/A
CaseProblemVariantFreeText: N/A
ClinVar: N/A
CAID: N/A
gnomAD: N/A
VariantEvidence:N/A
MutationType: exon_loss_variant
CivicName: Exon 1 Deletion
MultipleGeneVariants: N/A
In four families, partial deletions of one or more exons were detected by Southern blot analysis
PatientID: unknown (brother)
KindredID: A
Case: M (deceased), Age unknown, Turkish
DiseaseAssertion: assumed VHL
FamilyInfo: 5 family members are grouped with this deletion (ages 16-37Y; mean 31Y). VHL was clinically diagnosed in, at minimum, the proband. See Fig. 2 for family pedigree. This patient and his one brother were not tested for the DNA deletion however it is assumed by the authors due to the segregation observed.
CasePresentingHPOs: HP:0010797 (hemangioblastoma)
CaseHPOFreeText: N/A
CaseNotHPOs: HP:0009711; HP:0002666; HP:0005584 (retinal capillary hemangioma; pheochromocytoma; renal cell carcinoma)
CaseNotHPOFreeText: N/A
CasePreviousTesting: N/A
PreviouslyPublished: N/A
SupplementalData: N/A
Variant: Deletion of exons 1 and 2
CaseProblemVariantFreeText: N/A
LegacyVariant: N/A
ClinVarID: N/A
CAID: N/A
gnomAD: N/A
VariantEvidence: not tested for the DNA deletion however it is assumed by the authors due to the segregation observed.
MutationType: exon_loss_variant
CivicName: exon 1-2 deletion
MultipleGeneVariants: N/A
GroupID/ KindredID: F28
Case: Sex unknown, 23Y0M, Spanish
DiseaseAssertion: assumed VHL
FamilyInfo: familial antecedents found; unknown of any additional features of index case relatives
CasePresentingHPOs: HP:0000107; HP:0009711; HP:0006880; HP:0006770; HP:0002666 (renal cysts, retinal capillary hemangioma, cerebellar hemangioblastoma, clear cell renal cell carcinoma, pheochromocytoma)
CaseHPOFreeText: unilateral pheo, bilateral ccRCC and multiple lesions were found with the patient’s renal cysts. Age of onset is 23Y0M.
CaseNotHPOs: HP:0001737 (pancreatic cysts)
CaseNotHPOFreeText: N/A
CasePreviousTesting: N/A
PreviouslyPublished: N/A
SupplementalData: N/A
Variant: rearrangement (unspecified)
LegacyVariant: N/A
CaseProblemVariantFreeText: N/A
ClinVarID: N/A
CAID: N/A
gnomAD: N/A
VariantEvidence: Southern blot positive
MutationType: rearrangement_region
CivicName: Rearrangement
MultipleGeneVariants: N/A
PatientID: 246
KindredID: 246
Case: Sex Unknown, 26Y0M, Ethnicity Unknown
DiseaseAssertion: VHL
FamilyInfo: N/A
CasePresentingHPOs: HP:0010797; HP:0009711; HP:0006770 (Hemangioblastoma, Retinal capillary hemangioma, Clear cell renal cell carcinoma)
CaseHPOFreeText: CNS and retinal hemangioblastoma and clear cell renal cell carcinoma.
CaseNotHPOs: HP:0002666; HP:0000107; HP:0001732 (Pheochromocytoma, Renal cyst, Abnormality of the pancreas)
CaseNotHPOFreeText: N/A
CasePreviousTesting: N/A
PreviouslyPublished:N/A
SupplementalData: Table S1, S2 and S3
Variant: Partial Deletion (0.7kb)
LegacyVariant: N/A
CaseProblemVariantFreeText: N/A
ClinVarID: N/A
CAID: N/A
gnomAD: N/A
VariantEvidence: N/A
MutationType: deletion
CivicName: Partial deletion of 0.7kb
MultipleGeneVariants: N/A
16 different families
PatientID: IX-I
KindredID: 9
Case: M, 68Y0M, Ethnicity Unknown
DiseaseAssertion: VHL
FamilyInfo: No family history reported.
CasePresentingHPOs: HP:0006748; HP:0002668; HP:0030405; HP:0001737; HP:0006880 (adrenal pheochromocytoma, paraganglioma, pancreatic endocrine tumor, pancreatic cyst, cerebellar hemangioblastoma)
CaseHPOFreeText: Patient presented with adrenal pheochromocytoma, paraganglioma, pancreatic endocrine tumor, pancreatic cyst, and cerebellar hemangioblastoma at age 55Y0M and was diagnosed with VHL type 2A (see table 2).
CaseNotHPOs: HP:0000107; HP:0005584 (renal cyst; renal cell carcinoma)
CaseNotHPOFreeText: Patient negative for renal cell carcinoma and renal cysts.
CasePreviousTesting: N/A
PreviouslyPublished: N/A
SupplementalData: N/A
Variant: complete deletion
LegacyVariant: N/A
CaseProblemVariantFreeText: N/A
ClinVarID: N/A
CAID: N/A
gnomAD: N/A
VariantEvidence: N/A
MutationType: deletion
CivicName: NULL (deletion)
MultipleGeneVariants: N/A
Comparably, the result of the CNTNAP2 rs2710102 associations with ASD studies (n = 4+current study) was also not significant [n = 7276; p = 0.26; OR = 1.028 (95 % CI 0.98–1.08), see Suppl. Table S6, Fig. 1b]
Performed a meta-analysis of all data published on the rs2710102 CNTNAP2 variant up to 2015, and included Anney et al, 2012 (PMID: 20663923), Toma et al., 2013 (PMID: 23277129), Sampath et al, 2013 (PMID: 24147096), Poot et al., 2014 (PMID: 25337070 ), plus there current cohort.
No significant increase in cases vs controls for CNTNAP2 rs2710102
While this data does help support Contradictory evidence for CNTNAP2 involvement in autism, the lack of reporting of the total number of controls, as well as the number of cases and controls with the SNP prevents me from curating this information within the ClinGen gene curation interface.
he meta-analysis of the CNTNAP2 rs7794745 associations with ASD studies (n = 5+current study) did not result in significant association with ASD in general [n = 8576; p = 0.112; OR = 1.023 (95 % CI 0.99–1.05); see Suppl. Table S5, Fig. 1a]. Since we detected some heterogeneity for the SNP rs7794745 according to the funnel plot (see Suppl. Figure S10), we performed an additional meta-analysis synthesis using the random effect model. However, no significant association with ASD was observed and OR were very similar as for the fixed-model [OR = 1.081 (95 % CI 0.976–1.196), p = 0.133; for details Suppl. Table S9a].
Performed a meta-analysis of all data published on the rs7794745 CNTNAP2 variant up to 2015, and included Arking et al., 2008 (PMID:18179894), Li et al 2010 (PMID: 20414140), Anney et al, 2012 (PMID: 20663923), Toma et al., 2013 (PMID: 23277129), Sampath et al, 2013 (PMID: 24147096), plus there current cohort.
No significant increase in cases vs controls for CNTNAP2 rs7794745
Individuals were genotyped for the two most frequently reported single nucleotide polymorphisms (SNPs) in the CNTNAP2 gene (rs2710102, rs7794745).
Genotyped for the two common SNPs in CNTNAP2 rs2710102 rs7794745
Similar
CaseControlLabel: Toma 2013 CNTNAP2 rs7794745 analysis
CaseCohortLabel: 322 Autism patients
ControlCohortLabel: 524 controls
CaseCohortDisease: MONDO:0005260 (Autism)
CaseCohortPhenotype:
CaseCohortPhenotypesFreeText: Authors indicate that all individuals fulfilled DSM-IV criteria for autism or Asperger disorder. Additionally, some cases included where diagnosed with pervasive developmental disorder they may or may not have been characterized based on ADI-R and ADOS-G.
CaseControlNOTPhenotype:
CaseControlNOTPhenotypeFreeText:
CaseDemographics: 269 men, 53 women, Average age= = 17y.o. of Spanish and/or Caucasian descent.
ControlDemographics: controls were noted to be sex-matched and unrelated, however no numbers or ages were indicated. Sample obtained from the Blood and Tissues Bank of Hospital Universitari Vali d'Hebron.
CaseGenotypingMethod: One SNP, rs7794745, was genotyped using PCR-RFLP, from DNA obtained from peripheral blood lymphocytes (salting out method).
ControlGenotypingMethod: One SNP, rs7794745, was genotyped using PCR-RFLP, from DNA obtained from peripheral blood lymphocytes (salting out method).
CasePower: 312/322
ControlPower: 505/524
CaseAddInfo: Other genetic variation is not noted.
ControlAddInfo: Other genetic variation is not noted.
CaseControlStudyType: Single Variant Analysis
CaseControlDetectionMethod: Cases and controls genotyped for single variant
CaseControlStats: p-value= 0.87
CaseControlBias: Cases and controls are ethinically matched, and noted to be sex-matched.
CaseControlComments:
rs2799573 10 18641934 CACNB2 T/C 0·715 0·825 4·29×10−8 1·08 (1·05–1·12) 0·57 Five disorder¶
GWAS identified rs2799573 as being associated with five disorders (autism spectrum disorder, attention deficit-hyperactivity disorder, bipolar disorder, major depressive disorder, and schizophrenia)
Supplementary MaterialsSupplementary information41598_2017_11211_MOESM1_ESM.xlsx (63K)
This paper is flagged in Mastermind as containing this variant. The rs12720449 ID is mentioned in the supplemental info under the controls tab, but the specific variant is not listed
(GRIN2B, rs7301328)
Case: Multiple individuals with the same GRIN2B variant (the mean age was 76 ± 11 SD years (Range: 38–101), the mean age at PD onset was 67 ± 12 SD years (Range: 32–94), and 421 patients (63%) were male).
Disease Assertion: Parkinson's disease
FamilyInfo: None
CasePresentingHPOs: HP:0001300
CaseHPOFreeText: Parkinson's disease
CaseNotHPOs: HP:0001250
CasePreviousTesting: Polymorphism genotyping on Sequenom iPLEX ® platform
PreviouslyPublished: No
Variant: rs7301328
ClinVarID: 129205
Table 2.
Case#:Not assigned
DiseaseAssertion:MPS type I with evidence of cognitive impairment defined as a score of at least 1 SD below mean on IQ testing or in one domain of neuropsychological function; attenuated MPS I
FamilyInfo:No information
CasePresentingHPOs:HP:0100543
CaseHPOFreeText:
CaseNotHPOs:HP:0032557
CaseNotHPOFreeText:Subjects were excluded if they had undergone hematopoietic stem cell transplantation, were unable to comply with study procedures, had significant lumbar pathology precluding access to the intrathecal space via lumbar puncture, or significantly impaired spinal CSF flow as detected on a nuclear medicine flow study as part of screening.
CaseEnzymeAssay:No information
CaseUrineGAGs:No information
CaseERT:Yes
CaseBMT:No (exclusion criterion)
Variant1:L238Q
Variant1ClinVarID:265418
Variant1CAID:
Variant2:W402X
Variant2ClinVarID:
Variant2CAID:
AdditionalVariants:N/A
ParentalGenotype:Not specified
PreviouslyPublished
Table 2.
Case#:Not assigned
DiseaseAssertion:MPS type I with evidence of cognitive impairment defined as a score of at least 1 SD below mean on IQ testing or in one domain of neuropsychological function; attenuated MPS I
FamilyInfo:No information
CasePresentingHPOs:HP:0100543
CaseHPOFreeText:
CaseNotHPOs:HP:0032557
CaseNotHPOFreeText:Subjects were excluded if they had undergone hematopoietic stem cell transplantation, were unable to comply with study procedures, had significant lumbar pathology precluding access to the intrathecal space via lumbar puncture, or significantly impaired spinal CSF flow as detected on a nuclear medicine flow study as part of screening.
CaseEnzymeAssay:No information
CaseUrineGAGs:No information
CaseERT:Yes
CaseBMT:No (exclusion criterion)
Variant1:L238Q
Variant1ClinVarID:265418
Variant1CAID:
Variant2:63delC
Variant2ClinVarID:
Variant2CAID:
AdditionalVariants:N/A
ParentalGenotype:Not specified
PreviouslyPublished
Table 2.
Case#:Not assigned
DiseaseAssertion:MPS type I with evidence of cognitive impairment defined as a score of at least 1 SD below mean on IQ testing or in one domain of neuropsychological function; attenuated MPS I
FamilyInfo:No information
CasePresentingHPOs:HP:0100543
CaseHPOFreeText:
CaseNotHPOs:HP:0032557
CaseNotHPOFreeText:Subjects were excluded if they had undergone hematopoietic stem cell transplantation, were unable to comply with study procedures, had significant lumbar pathology precluding access to the intrathecal space via lumbar puncture, or significantly impaired spinal CSF flow as detected on a nuclear medicine flow study as part of screening.
CaseEnzymeAssay:No information
CaseUrineGAGs:No information
CaseERT:Yes
CaseBMT:No (exclusion criterion)
Variant1:65delC
Variant1ClinVarID:
Variant1CAID:
Variant2:H240R
Variant2ClinVarID:947028
Variant2CAID:
AdditionalVariants:N/A
ParentalGenotype:Not specified
PreviouslyPublished
PMID:34884460
GeneName:GRIN1
ClinVarID:209159
ClinVarID:397504
ClinVarID:1076783
ClinVarID:658023
ClinVarID:430264
ClinVarID:487503
ClinVarID:691274
Patient 1
Case:Patient 1, Male, 4 y/o, German and Thai
DiseaseAssertion:FOXG1 syndrome
FamilyInfo: Non-consanguineous parents. De novo. Patient 1 has maternally inherited duplications at 15q21.12(47292250-47309868)x3 and Xp22.31(6451676-8115124)x3 of unknown clinical significance.
ParentalGenotype:Not provided
CasePresentingHPOs:HP:0002197, HP:0005484, HP:0011344, HP:0001252, HP:0020045,HP:0000540, HP:0010808, HP:0002019, HP:0003781, HP:0012741, HP:0002421, HP:0000748, HP:0003763, HP:5200017, HP:0025112, HP:0000957
CaseHPOFreeText: At 19 months, could not sit independently and no speech development. Stereotypic hand and head movements. High pain tolerance. X-ray at age 2 showed broad ribs. Improved head control by age 4.
CaseNotHPO:HP:0410263, HP:0002376
CaseNotHPOFreeText:Dysmorphic features. breathing abnormalities
CasePreviousTesting:No previous testing
PreviouslyPublished:Not previously published
GenotypingMethod:Mate-pair sequencing, Sanger sequencing
Gene:FOXG1
Variant:46,XY,t(9;14)(q22.3;q11.2)dn
HGVS:Not provided
ClinVarID:426096
gnomAD:Not provided
Patient 3
Case:Patient 3, Male, 1 y/o, Brazilian
DiseaseAssertion: FOXG1 syndrome
FamilyInfo: Non-consanguineous parents
ParentalGenotype: No family testing mentioned.
CasePresentingHPOs: HP:0000252, HP:0001252, HP:0000486
CaseHPOFreeText: Developed microcephaly within 1 year. Developmental delay, unable to sit without assistance at 1 year old. Central Nervous System (CNS) MRI showed a volumetric reduction of the cerebral parenchyma, hypomyelination, and hypoplasia of corpus callosum mainly involving the anterior part and prominent lateral ventricles
CaseNotHPO: HP:0030917
CaseNotHPOFreeText: Normal length, weight, HC at birth. No retinal abnormalities.
CasePreviousTesting: Not asserted.
PreviouslyPublished: Not previously published.
GenotypingMethod: Sanger sequencing, mate-pair sequencing
Gene: FOXG1
Variant: 46,XY,t(2;14)(q37;q11.2)dn
HGVS: Not provided.
ClinVarID:426094
gnomAD:Not provided
Patient 2
Case:Patient 2, Female, 5 y/o, Brazilian
DiseaseAssertion:quadriplegic cerebral palsy with axial hypotonia and distal spasticity
FamilyInfo: Non-consanguineous parents. Parents had normal karyotypes. Older sister was clinically normal.
ParentalGenotype: Normal karyotypes for both parents.
CasePresentingHPOs: HP:0002098, HP:0010959, HP:0008755, HP:0002090, HP:0032661, HP:0001274, HP:0011344, HP:0001249, HP:0001344, HP:0000748, HP:0034435, HP:0000486, HP:0000483, HP:0200136
CaseHPOFreeText: Dilated superficial blood vessels seen on brain MRI.
CaseNotHPO:N/A
CaseNotHPOFreeText: N/A
CasePreviousTesting: Not asserted
PreviouslyPublished: Not previously published
GenotypingMethod:Mate-pair sequencing, Sanger sequencing, chromosome analysis
Gene: FOXG1
Variant: 46,XX,t(4;14)(q27;q13)dn
HGVS: Not provided
ClinVarID: 426095
gnomAD: Not provided
EXTL3, HGNC:3518
Neuro-immuno-skeletal Dysplasia Syndrome
OMIM: 617425
(A) With ARL2BP, photoreceptor OS develops normally, with correct DMT formation, axoneme extension, and disk alignment.
Selection A- Gene with same function implicated in disease
ExperimentName: Moye et al. 2018
GOterm: GO:0051179 (localization)
FunctionalEvidence: It was discovered that without ARL2BP, the photoreceptor OS does not develop normally or have correct DMT formation, axoneme extension, and disk alignment.
HGNC: HGNC:10295 (RPGR), HGNC:10263 (RP1), HGNC:6816 (MAK)
GeneEvidence: ARL2BP, RPGR, RP1 and MAK are all localized within the ciliary basal body and rootlet.
SharedGeneImplication: RPGR was classified as having a "definitive" relationship with RP 15 by the Retina GCEP. Refer to the curation for further details. RP1 was classified as having a "definitive" relationship with RP1 by the Retina GCEP. Refer to the curation for further details. MAK was classified as having a "definitive" relationship with MAK-related retinopathy by the Retina GCEP. Refer to the curation for further details.
RSPH1 and RSPH9, here highlighted, are known to be components of the RS head in human respiratory cilia
Selection A- Gene with same function implicated in disease
ExperimentName: Aprea et al. 2023
GOterm: GO:0001535 (radial spoke head)
FunctionalEvidence: Taken together, our results indicate that the ruler proteins CCDC39 and CCDC40, the radial spoke head proteins RSPH1 and RSPH9 as well as the central pair associated apparatus proteins SPEF2 and HYDIN have a similar functional role in motile cilia and sperm flagella, as hypothesized in Figure 1.
HGNC: HGNC:12371
GeneEvidence: PMID: 24518672 documents how RSPH1 and RSPH9, which encode homologs of components of the ‘head’ structure of ciliary radial spoke complexes identified in Chlamydomonas, cause clinical phenotypes that appear to be indistinguishable except at the gene level. They both also have a relationship with PCD.
SharedGeneImplication: The gene-disease relationship between RSPH1 and PCD has been established and published in multiple papers. See Motile Ciliopathy GCEP curations of RSPH1 for more information.
(B) Schematic of the axonemal 96 nm repeat unit, including the composition of the IDA subspecies and the location of axonemal components. DNAH7, DNAH6, and DNAH1 are highlighted in purple, orange, and yellow, respectively. The stalks of the IDA dynein heavy chains are highlighted in blue or pink, depending on whether they are associated with DNALI1 or CETN2. The CCDC39/40 ruler complex is depicted in light and dark green.
Selection A- Gene with same function implicated in disease
ExperimentName: Wilken et al. 2024
GOterm: GO:0036156 (inner dynein arm).
FunctionalEvidence: Both DNAH6 and DNAH1 are both IDA components and localized to the same region.
HGNC: HGNC:2940 (DNAH1).
GeneEvidence: Both DNAH6 and DNAH1 are both IDA components and localized to the same region.
SharedGeneImplication: DNAH1 was classified as having a "limited" relationship with PCD 37 and a “defintive” relationship with spermatogenic failure 18 by the Motile Ciliopathy GCEP. Refer to the curation for further details.
Four genes cause PCD through radial spoke defects - RSPH9 (Chr 6), RSPH4A (Chr 6), RSPH3 (Chr 6), and RSPH1 (Chr 21). These mutations produce various defects at the junction of the radial spoke heads and the central apparatus, resulting in diverse ciliary ultrastructure changes on TEM.
Selection A - Gene with same function implicated in disease
ExperimentName: Shapiro 2007 et al.
GOterm: GO:0051179 (localization)
FunctionalEvidence: RSPH3 and RSPH9 are both localized to radial spoke heads and have a similar phenotype profile.
HGNC: HGNC:21057.
GeneEvidence: PMID: 20301301 documents how RSPH9 and RSPH3, which encode homologs of components of the ‘head’ structure of ciliary radial spoke complexes identified in Chlamydomonas, cause clinical phenotypes that appear to be indistinguishable except at the gene level. They both also have a relationship with PCD.
SharedGeneImplication: The gene-disease relationship between RSPH9 and PCD has been established and published in multiple papers. See Motile Ciliopathy GCEP curations of RSPH9 for more information.
Mapping of a distal form of spinal muscular atrophywith upper limb predominance to chromosome 7p
PMID: 8541851
GeneName: GARS1
HGNC: HGNC:4162
Disease: CMT2D
MonDO ID:
Inheritance: Autosomal Dominant
The source focuses on the clinical, immunological, and molecular features of Severe Combined Immune Deficiency (SCID) based on a multi-institutional experience from India. The specific gene studied in this case is IL2RG. The HGNCID for this gene is HGNC:6016. The sources provide information about a 6-month-old male patient with SCID. The patient's family history suggests a possible X-linked inheritance pattern. The sources note the absence of autoimmunity and malignancies in the patient. Information regarding the patient's variant, previous testing, and publication history is not available in the sources.
52
Case#:Patient 52, female, 3 years old
DiseaseAssertion:Neonatal/Infantile Epileptic Encephalopathy (NIEE)
FamilyInfo:DeNovo. The family is Chinese
ParentalGenotype:The authors only conducted singleton and not trio-based exome sequencing so the parents' exomes were not sequenced.
CasePresentingHPOs:HP:0011344, HP:0002069, HP:0007359, HP:0011097, HP:0100704, HP:0001332, HP:0002072, HP:0012171.
CaseHPOFreeText:Patient 52 presents with severe global developmental delay and epilepsy.
Patient 52 has generalized tonic/clonic/tonic-clonic seizures, focal seizures and spasms. Patient 52's seizure onset occurred at 3 months old.
Patient 52 has cortical visual impairment (CVI), dystonia, chorea, and hand-washing sterotypies.
Patient History
@ 3 months - Patient 52 had generalized tonic/clonic/tonic-clonic seizures.
Patient 52 was on 3 antiepileptic drugs at most recent follow-up visit which reduced seizure frequency by >50%.
CaseNotHPOs:Not provided
CaseNotHPOFreeText:Not provided
CasePreviousTesting:The authors selected a cohort of 31 patients with seizure cryptogenic Neonatal/Infantile Epileptic Encephalopathy (NIEE) and seizure onset before 24 months.
Exclusion criteria included: (1) Patients with a definite history of brain insult, malformation of cortical development, neurocutaneous and syndromal disorders, and confirmed or highly suspected neurometabolic disorders based on clinical and biochemical markers. (2) Patients with Dravet syndrome and epilepsy at infancy with migrating focal seizure were also excluded because the majority of variants are detected in the SCN1A (>85%) and KCNT1 (approximately 50%) genes.
Formal neuropsychological testing or best clinical assessment was used to classify patient development or intelligence.
PreviouslyPublished:Not previously published
GenotypingMethod:Whole Exome Sequencing (WES) variant results were filtered in a panel of 430 epilepsy-associated genes. After selection of variants from the 430-gene panel, the synonymous variants, variants with variant frequency <10%, and variants with allele frequency >1% were removed.
Gene:CDKL5
Variant:NM_003159.2 c. 1849delC (p. Arg617Valfs*4)
The authors state that the variant is a heterozygous frameshift deletion.
The authors state that this is a novel variant and is pathogenic.
HGVS:Not provided
ClinVarID:Not found
CAID:Not found.
gnomAD:Not found
MultipleGeneVariants:Not provided
7
Case#:Patient 7, male, 5 years old
DiseaseAssertion:Neonatal/Infantile Epileptic Encephalopathy (NIEE)
FamilyInfo:The family is French/Chinese
ParentalGenotype:The variant was inherited from Patient 7's asymptomatic mother.
CasePresentingHPOs:HP:0010864, HP:0012758, HP:0000729, HP:0007359, HP:0002069, HP:0032794, HP:0001250, HP:0000252.
CaseHPOFreeText:Patient 7 presents with severe intellectual disability, developmental slowdown, and various seizure types. Patient 7 has Autistic Spectrum Disorder (ASD) and microcephaly.
Patient History
@ 12 months - Patient 7 presented with seizures.
Patient 7 developed additional seizure types including: focal seizures with/without generalization, generalized tonic/clonic/tonic-clonic seizures, myoclonic seizures, and hypomotor seizures.
Patient 7 was on two antiepileptic drugs at most recent followup visit which reduced seizure frequency by >50%.
CaseNotHPOs:Not provided
CaseNotHPOFreeText:Not provided
CasePreviousTesting:The authors selected a cohort of 31 patients with seizure cryptogenic Neonatal/Infantile Epileptic Encephalopathy (NIEE) and seizure onset before 24 months.
Exclusion criteria included: (1) Patients with a definite history of brain insult, malformation of cortical development, neurocutaneous and syndromal disorders, and confirmed or highly suspected neurometabolic disorders based on clinical and biochemical markers. (2) Patients with Dravet syndrome and epilepsy at infancy with migrating focal seizure were also excluded because the majority of variants are detected in the SCN1A (>85%) and KCNT1 (approximately 50%) genes.
Formal neuropsychological testing or best clinical assessment was used to classify patient development or intelligence.
PreviouslyPublished:Not previously published
GenotypingMethod:Whole Exome Sequencing (WES) variant results were filtered in a panel of 430 epilepsy-associated genes. After selection of variants from the 430-gene panel, the synonymous variants, variants with variant frequency <10%, and variants with allele frequency >1% were removed.
Gene:SLC9A6
Variant:Hemizygous splice site NM_001042537.1 c. 794-2A>G was assessed by the authors to be likely pathogenic.
HGVS:Not provided
ClinVarID:Not found
CAID:CA414750320
gnomAD:Not found
MultipleGeneVariants:Not provided
Case 1
Case: Patient 1, female, 2 years old
DiseaseAssertion: Rett Syndrome
FamilyInfo: DeNovo. Patient 1 was the second child of a nonconsanguineous Chinese couple. Patient 1 was born at full term with a birth weight of 3.83 kg.
ParentalGenotype(s):Not provided
CasePresentingHPOs:HP:0011344, HP:0001250, HP:0001252, HP:0000252, HP:0000748, HP:0003763, HP:0005469, HP:0000486, HP:0012171.
CaseHPOFreeRext:Patient 1 presents with severe global developmental delay, epilepsy, and hypotonia. The Patient History contains all of Patient 1's phenotypes along with the progression of her condition.
Patient History
@ 3 months - Patient 1 had microcephaly (head circumference was less than 3rd percentile with a body weight and body height at 75th percentile). Patient 1 had hypotonia.
Patient 1 was given a metabolic screening, a muscle enzyme, and a brain tomography with normal results.
@ 6 months - Patient 1 had microcephaly, flat occiput, right divergent squint, and hypotonia. No syndromal diagnosis could be ascertained at that time.
@ 2 years - Patient 1 had epilepsy.
Patient 1 had severe global development delay.
Patient 1 was given an EEG which showed nonspecific background slowing, but no epileptiform abnormalities. Patient 1 was also given a brain MRI which showed mild thinning of corpus callosum without major structural defect. Patient 1 had no developmental regression but she developed stereotypical hand movements, bruxism, and occasional outburst of laughter.
Based on these phenotypes, Angelman/Rett Syndrome was suspected.
CaseNOTHPOs: HP:0002353.
CaseNOTHPOFreeText: Patient 1 was given an EEG which detected no epileptic abnormalites.
CasePreviousTesting: Genetic investigations (including methylation-specific multiplex ligation-dependent probe amplification (MS-MLLPA)) was conducted for Angelman Syndrome, UBE3A gene, MECP gene, and array CGH. These studies were negative. A FOXG1 related disease was suspected
PreviouslyPublished:Not previously published
GenotypingMethod: A FOXG1 gene test showed a de novo frameshift pathogenic mutation FOXG1 {NM_005249.3} c. 396_397ins26; FOXG1{NP_005240.3} :(p. Gly133TRPfs*68) which confirmed the diagnosis of a FOXG1 related congenital variant of Rett Syndrome.
Gene:FOXG1
Variant: (NM_005249.3) c. 396_397ins26 (p. Gly133Trpfs*68)
HGVS:Not provided
ClinVarID:Not found
CAID:Not found
gnomAD:Not found
Case 2
Case:Patient 2, female, Chinese
DiseaseAssertion:Global delay
FamilyInfo:Patient 2 was the first child of nonconsanguineous Chinese couple born at 38-week gestation. The mother had gestational diabetes mellitus that required insulin therapy.
ParentalGenotype:Not provided
CasePresentingHPOs:HP:0000365, HP:0020049, HP:0000252, HP:0001263, HP:0012171, HP:0000154, HP:0000708, HP:0003763, HP:0002376, HP:0012433.
CaseHPOFreeText:
Patient History
@ birth - Patient 2 presented with mild grade bilateral hearing impairment and left divergent squint diagnosed at birth.
@ Follow-up visit - Patient 2 had microbrachycephaly and global developmental delay. Brain MRI, metabolic screening and array CGH were normal.
@ 1 year - Patient 2 had stereotypical handwashing movement.
There was no clinical or electrical seizure.
Patient 2 has craniofacial features like microbrachycephaly, wide mouth, divergent squint, and behavioral phenotype.
@ 1.5 years - Patient 2 had bruxism and developmental regression. Patient 2 also had loss of some motor and social skills.
CaseNotHPOs:HP:0001250
CaseNotHPOFreeText:Patient 2 has no seizures.
CasePreviousTesting:Not provided
PreviouslyPublished:Not previously published
GenotypingMethod:Not provided
Gene:MECP2 (MN_004992.3) (NP_004983.1)
Variant:c. 808C>T (p. Arg270*)
HGVS:Not provided
ClinVarID:Not found
CAID:CA172577
gnomAD:Not found
MultipleGeneVariants:NA
first patient
Case:Patient 1, female, 11 years old
DiseaseAssertion:Rett Syndrome - Atypical Variant
FamilyInfo:De Novo. Patient 1's parents were healthy. When Patient 1 was clinically examined, the head circumferences of her mother and father were 53 cm (P25) and 59 cm (P90), respectively. The parents had normal weight.
ParentalGenotype:Both parents were sequenced for Patient 1's mutation, and the deletion was not detected.
CasePresentingHPOs:HP:0001249, HP:0001513, HP:0001626, HP:0000256, HP:0010465, HP:0012758, HP:0000750, HP:0012433, HP:0002591, HP:0001250, HP:0020174, HP:0000316, HP:0000336, HP:0000431, HP:0000377, HP:0000470, HP:0001156, HP:0001500.
CaseHPOFreeText:
Patient history
@ birth - Patient 1 was born at 38 weeks of gestation after an uncomplicated pregnancy. Her weight was 3,390 g (P69), height 51 cm (P60), and her head circumference was 36 cm (P90).
@ 6 months - Patient 1 experienced developmental delay.
@ 9 months - Patient 1 sat without support.
@ 2 years - Patient 1 began to walk.
@ later on - Patient 1 presented with speech delay and behavioral disturbances. The behavioral disturbances were reduced by the drug risperidone.
@ early childhood - Patient 1 has been obese and appeared to display hyperphagia.
@ 8 years - Patient 1 developed precocious puberty.
@ 10 years - Patient 1 had her first epileptic seizure. Treatment with lamotrigine prevented further seizures. The seizures later became refractory to this treatment.
@ 10 years - Patient 1 presented with a height of 160 cm (P>97) and a head circumference of 59 cm (P>97). She had hypertelorism and prominent eyebrows. Her nasal bridge was broad and auricles were fleshy. In addition, Patient 1's neck was short and the fingers were short and wide.
Patient 1 has an intellectual disability, metabolic syndrome, and macrocephaly.
CaseNotHPOs:HP:0002540.
CaseNotHPOFreeText:Patient 1 sat without support at 9 months old. She walked at 2 years.
CasePreviousTesting:Patient 1 was given a conventional cytogenetic analysis. The chromosomal analyses (46,XX) and array CGH results (BlueGnome CytoChip ISCA 4×180K v1.0; Agilent Human Genome CGH Microarray 180K) were normal. Patient 1 was also given a methylation-specific MLPA to exclude a Temple syndrome, which is also characterized by weight gain and precocious puberty. In addition, Prader-Willi syndrome was ruled out by methylation testing. This syndrome is another imprinting disease causing obesity and intellectual disability.
PreviouslyPublished:Not previously published
GenotypingMethod:Whole-exome sequencing analysis of the entire exome was conducted for Patient 1. Whole-genome sequencing showed heterozygosity in Patient 1, which was confirmed by Sanger sequencing. Macrocephalic syndrome genes including PTEN, NSD1, NFIX, SETBP1, RAI1, and PHF6 were analyzed, and no additional variants of interest (pathogenic, likely pathogenic, or variants of uncertain significance) were observed.
Gene:MECP2
Variant:c. 1162_1172del (p. Pro388*), heterozygosity, frameshift.
HGVS:NM_004992.3
ClinVarID:Not found
CAID:CA1139667881
gnomAD:Not found
MultipleGeneVariants:Not provided
Patient 2
Case:Patient 2, female, 2.5 years old
DiseaseAssertion:CDKL5 Disorder
FamilyInfo:De Novo with an unremarkable family history.
ParentalGenotype:Not provided
CasePresentingHPOs:HP:0032792, HP:0007359, HP:0011154, HP:0002194, HP:0010862, HP:0000750, HP:0012434, HP:0000710, HP:0100023, HP:0000252, HP:0009062, HP:0010845, HP:0020174, HP:0010841.
CaseHPOFreeText:
Patient history
@ 2 months to 2.5 years - Patient 2 experienced tonic and focal seizures with autonomic symptoms.
@ 2 years - Patient 2 was diagnosed with CDKL5 disorder.
Patient 2 had severe delayed gross motor development, severe delayed fine motor development, severe delayed language development and delayed social development. Patient 2 had hyperoral and hand flapping stereotypies. She also had microcephaly (< 2 SD) and axial hypotonia.
Patient 2 was given a brain EEG which detected Delta slowing of the background followed by generalized attenuation during seizures and multifocal interictal epileptiform abnormalities.
@ 2.5 years - Patient 2 experienced seizures in clusters.
Treatments
Antiepleptic treatments included:Phenobarbital, Topirimate, Clobazam, Valproate, Keppra, Vitamin B6, Phenytoin, Lamotrigine, Nitrazepam, Oxcarbazepine, Mirtazipine, KCI, Levetiracetam, ant ketogenic diet.
Patient 2 was also treated with Carnitine. Patient 2's seizures seem to have changed in type over time but continued.
Other testing
Tests were conducted on Patient 2 to obtain data in the following areas: NBS, lactate, lipoprotein profile, plasma and urine amino acids, urine organic acids, acylcarnitine profile, total and free serum carnitine levels, plasma ammonia, total plasma homocysteine, serum CK, liver enzymes, urine alpha-AASA, creatine, biotinidase, VLCFA, Batten disease screen, CSF analysis (amino acids, lactate, glucose, protein, cell count, neurotransmitters), MRI-brain with spectroscopy, and karyotype.
CaseNotHPOs:Not provided
CaseNotHPOFreeText:Not provided
CasePreviousTesting:Patient 2 was given a gene sequence test for the genes SCNIA and MECP2. No gene mutation was found for these two genes.
PreviouslyPublished:Not previously published
GenotypingMethod:Patient 2 was given a CDKL5 gene sequence test. The test detected a mutation in the CDKL5 gene.
Gene:CDKL5
Variant:c. 2480_2486dupCAGATCT. frameshift
The authors state that CDKL5 gene sequencing detected a de novo duplication in exon 17, c. 2480_2486dupCAGATCT, resulting in a frameshift (Boston University School of Medicine, Center for Human Genetics, Boston, MA). This is a novel change that has not been reported before in ExAC. Only pathogenic point mutations in exon 17 have previously been reported. In a patient with a previously reported frameshift mutation in exon 18, a truncated CDKL5 transcript was detected. A truncated protein would lack the C-terminus and would not localize correctly in the cell, as demonstrated in vitro. Accordingly, any reading frame altering mutations proximal to exon 18 are null-variants. Therefore, this mutation is classified as pathogenic according to ACMG criteria.
HGVS:Not provided
ClinVarID:547188
NM_001323289.2 (CDKL5): c. 2480_2486dup (p. Gln830fs)
Allele ID: 538303
CAID:Not found
gnomAD:Not found
MultipleGeneVariants:Not provided
In this study, we report a 4-month-old boy with T−B+NK− SCID due to an unreported nonsense mutation in exon 2 of the IL2RG gene. The patient was derived from a twin pregnancy, and his twin brother was asymptomatic with no immune defects. In order to confirm the pathogenic effect of the detected novel variant on the protein structure, a modeling process was performed.
Case: Patient, Male, 4 months old <br /> DiseaseAssertion: SCID <br /> FamilyInfo: third child of non-consanguineous parents; has twin brother that is asymptomatic with no immune defects; no family history of primary immunodeficiencies <br /> CasePresentingHPOs: HP:0002014, HP:0020099, HP:0030148 <br /> CaseHPOFreeText: diarrhea, norovirus infection, heart murmur <br /> CaseNotHPOs: increased CRP <br /> CasePreviousTesting: N/A <br /> Gene: IL2RG <br /> Variant: NM_000206(IL2RG): <br /> ClinVar: <br /> CAID: <br /> gnomAD: <br /> SupplementalData:
A Laboratory Phenotype/Genotype Correlation of 1167 French Patients From 670 Families With von Willebrand Disease A New Epidemiologic Picture
PMID: 26986123 Gene: von Willebrand factor HGNCID: 12726 Note: reported for group analysis with no associated probands/patient
Common large partial VWF gene deletion does not cause alloantibody formation in the Hungarian type 3 von Willebrand disease population
PMID: 21362127 Gene: von Willebrand factor HGNCID: 12726
The genetics of Canadian type 3 von Willebrand disease: further evidence for co-dominant inheritance of mutant alleles
PMID: 23311757 Gene: von Willebrand factor HGNCID: 12726
Alpha vs. Gamma sarcoglycanopathy: DNA tests solve a case from Argentina
PMID: 18421900
Gene: SGCA
HGNCID: 10805
National experience with adenosine deaminase deficiency related SCID in Polish children
PMID:36685585
Gene: Adenosine Deaminase (ADA)
HGNCID: 186
Sixty-six individuals representing 54 families were studied (Supplementary Material, Table S1). All individuals were found to harbor two ABCA4 variants likely to cause the retinal disease (18,20–26). In 40 families (74%), independent segregation of the two alleles was demonstrated. The ages at the time of their first visit ranged from 9 to 74 years (mean = 35.9, median = 35.2 years); in the majority of individuals (36/66=55%), data were available from a second visit that occurred on average 8.7 years (range=2–20 years, median = 6.9 years) after the first visit.
Case#: Patient #35, male, 35yo at report, 14yo at onset,
DiseaseAssertion: STGD
FamilyInfo: family 30, segregation was noted as "yes" but no other details provided
CasePresentingHPOs:
CaseHPOFreeText:
CaseNotHPOs:
CaseNotHPOFreeText:
GenotypingMethod:
PreviouslyPublished: n/a
Variant: allele 1: A1038V;L541P allele 2: G818E
ClinVar: 99135
CAID: CA227000
SupplementalData: supplemental table 1
STGD87 2588G→C Q1750X Yes
Case#: STGD87, 10-14yo at onset, German
DiseaseAssertion: STGD
FamilyInfo: segregation in family
CasePresentingHPOs:
CaseHPOFreeText: "The diagnosis of STGD was based on the demonstration of bilateral impairment of central vision and the appearance of perimacular and/or peripheral yellow-white flecks, with or without atrophy of the central retinal-pigment epithelium and a normal or only mildly abnormal flash electroretinogram when recorded in early stages of the disease."
CaseNotHPOs:
CaseNotHPOFreeText:
GenotypingMethod: denaturing gradient gel electrophoresis, dHPLC, and SSCP analysis, PCR amplification of individual coding exons and flanking intron sequences, direct DNA sequencing
PreviouslyPublished: n/a
Variant: Q1750X; 2588G→C in trans "Correct segregation of disease alleles was demonstrated in all 39 cases in which family samples were available for study"
ClinVar: 7879
CAID: CA119128
SupplementalData: n/a
STGD47/164 IVS13+1G→A 2588G→C Yes
Case#: STGD47/164, 10-14yo at onset, German
DiseaseAssertion: STGD
FamilyInfo: segregation in family
CasePresentingHPOs:
CaseHPOFreeText: "The diagnosis of STGD was based on the demonstration of bilateral impairment of central vision and the appearance of perimacular and/or peripheral yellow-white flecks, with or without atrophy of the central retinal-pigment epithelium and a normal or only mildly abnormal flash electroretinogram when recorded in early stages of the disease."
CaseNotHPOs:
CaseNotHPOFreeText:
GenotypingMethod: denaturing gradient gel electrophoresis, dHPLC, and SSCP analysis, PCR amplification of individual coding exons and flanking intron sequences, direct DNA sequencing
PreviouslyPublished: n/a
Variant: IVS13+1G→A; 2588G→C in trans "Correct segregation of disease alleles was demonstrated in all 39 cases in which family samples were available for study"
ClinVar: 7879
CAID: CA119128
SupplementalData: n/a
Case 4A 52-year-old male was examined for declining vision OS over the past few months. He was previously clinically diagnosed with STGD 7 years before presentation. Family history was not significant for ocular disease. Best-corrected visual acuity measured 20/100 OD and 20/70 OS. Spherical refractive error measured −3.00 OD and −3.25 OS. Anterior segment examination was unremarkable and applanation tonometry measured 17 mmHg OD and 14 mmHg OS. Posterior segment examination was significant for central atrophy and classic peripheral pisciform flecks sparing the peripapillary regions OU (Figure 4, A and B). Autofluorescence imaging demonstrated inner atrophic flecks and outer hyperautofluorescent flecks. Moderate peripapillary hypoautofluorescence, but not atrophy, was present, likely secondary to the patient’s myopia (Figure 4, C and D). Genotyping revealed two heterozygous ABCA4 mutations, P1380L and S1696N.Open in a separate windowFig. 4Case 4. STGD mutation IVS40 + 5G>A. A, Color Photo OU. B, Red-Free Photo OU reveal central atrophy and classic peripheral pisciform flecks sparing the peripapillary regions OU. C, Autofluorescence OD. D, Autofluorescence OS show that the innermost flecks are hypoautofluorescent, consistent with atrophy, whereas the outermost flecks are hyperautofluorescent, demonstrating excess lipofuscin. There is moderate peripapillary hypoautofluorescence that is not as dark as this patient’s central atrophy or the peripapillary atrophy of Case 1. This finding may thus be due to the patient’s myopia.
Case#: Hwang Case 4, male, 52yo at report, 45yo at onset
DiseaseAssertion: Stargardt
FamilyInfo: Family history was not significant for ocular disease.
CasePresentingHPOs: HP:0000545
CaseHPOFreeText: declining vision OS, BCVA was 20/100 OD and 20/70 OS. Spherical refractive error measured −3.00 OD and −3.25 OS. Posterior segment examination was significant for central atrophy and classic peripheral pisciform flecks sparing the peripapillary regions OU (Figure 4, A and B). Autofluorescence imaging demonstrated inner atrophic flecks and outer hyperautofluorescent flecks. Moderate peripapillary hypoautofluorescence, but not atrophy, was present (Figure 4, C and D).
CaseNotHPOs: HP:0500087
CaseNotHPOFreeText:
GenotypingMethod: Genotyping was performed by the ABCR400 microarray followed by direct sequencing to confirm identified variants.
PreviouslyPublished: n/a
Variant: P1380L and S1696N
ClinVar: 7904
CAID: CA129033
SupplementalData: n/a
Case 1A 55-year-old male was examined for long-standing central visual impairment since age 18. Family history was not significant for ocular disease. His best-corrected visual acuity of 20/350 OD and 20/200 OS was consistent with measurements over the last 20 years. Spherical refractive error measured −3.5 OD and −2.0 OS. Anterior segment examination was unremarkable and applanation tonometry measured 17 mmHg OD and 14 mmHg OS. Posterior segment examination and autofluorescence imaging were significant for sharply demarcated central and peripapillary zones of atrophy and the absence of fleck lesions (Figure 1, A–D). Humphrey visual fields demonstrated bilateral central scotomas with eccentric fixation at the inferior border. ERG examination was subnormal and similar to results obtained 22 years ago.Open in a separate windowFig. 1Case 1. STGD with peripapillary atrophy and mutations P1380L and IVS40 + 5G>A. A, Autofluorescence OD. B, Color Photo OD. C, Autofluorescence OS. D, Color Photo OS. All show marked peripapillary and macular atrophy with a sharply demarcated zone of sparing between them. These characteristics caused initial diagnostic confusion with choroidal sclerosis.Genetic testing was employed for further diagnostic information and two heterozygous ABCA4 mutations, P1380L and IVS40 + 5G>A, were identified and classified as disease-causing alleles, thereby confirming the diagnosis of STGD.
Case#: Hwang Case 1, US, male, 55yo at report, 18yo at onset
DiseaseAssertion: Stargardt disease
FamilyInfo: Family history was not significant for ocular disease
CasePresentingHPOs: HP:0007663, HP:0500087, HP:0000603, HP:0000512
CaseHPOFreeText: BCVA of 20/350 OD and 20/200 OS. Spherical refractive error measured −3.5 OD and −2.0 OS. Posterior segment examination and autofluorescence imaging were significant for sharply demarcated central and peripapillary zones of atrophy and the absence of fleck lesions (Figure 1, A–D). Humphrey visual fields demonstrated bilateral central scotomas with eccentric fixation at the inferior border.
CaseNotHPOs:
CaseNotHPOFreeText:
GenotypingMethod: Genotyping was performed by the ABCR400 microarray followed by direct sequencing to confirm identified variants.
PreviouslyPublished: n/a
Variant: P1380L and IVS40 + 5G>A
ClinVar: 7904
CAID: CA129033
SupplementalData: n/a
3 39 6/6 1 RCD Val552Ile 6/6
Case#: Case 3, 39yo
DiseaseAssertion: BEM, RCD
FamilyInfo: n/a
CasePresentingHPOs:
CaseHPOFreeText: a ring of increased AF surrounding decreased foveal AF, visual acuity= 6/6, 6/6
CaseNotHPOs:
CaseNotHPOFreeText: acquired toxic aetiology
GenotypingMethod: The entire coding sequence (50 exons), including exon–intron boundaries, of the ABCA4 gene of each patient was screened using single‐stranded conformational polymorphism (SSCP) analysis and direct sequencing.
PreviouslyPublished: n/a
Variant: Val552Ile heterozygous
CAID: CA239745
SupplementalData: n/a
Focal choroidal excavation in Stargardt’s dystrophy
PMID: 32843395
Gene: ABCA4
Disease: Stargardt
Personalized genetic counseling for Stargardt disease: Offspring risk estimates based on variant severity
PMID: 35120629
Gene: ABCA4
Disease: Stargardt disease
PAPER USED TO SCORE PS4
ABCA4 gene sequence variations in patients with autosomal recessive cone-rod dystrophy
PMID: 12796258
Gene: ABCA4
Disease: autosomal recessive cone-rod dystrophy
Functional Analysis and Classification of Homozygous and Hypomorphic ABCA4 Variants Associated with Stargardt Macular Degeneration
PMID: 32845050
Gene: ABCA4
Disease: Stargardt Macular Degeneration
Molecular testing for hereditary retinal disease as part of clinical care
PMID: 17296903
Gene: ABCA4
Disease: hereditary retinal disease
An uncommon case of retinitis pigmentosa patients basedon clinical and genetic studyAyudha Bahana Bahana Ilham Perdamaian, MSc2, Dewi Kartikawati Paramita, PhD3, Riris Istighfari Jenie,PhD4, Supanji Supanji, PhD11Universitas Gadjah Mada Fakultas Kedokteran Kesehatan Masyarakat dan Keperawatan, 2Doctorate Program of Health andMedicine Science, Faculty of Medicine, Public Health, and Nurse, Universitas Gadjah Mada, Yogyakarta, Indonesia. Departmentof Ophthalmology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, 3Department of Histology andMolecular Biology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia,Integrated Research Laboratory, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakar,4Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gadjah Mada University, Yogyakarta, IndonesiaCASE REPORTThis article was accepted: 25 August 2024Corresponding Author: Supanji SupanjiEmail: supanji@ugm.ac.id19-An uncommon00304.qxp_3-PRIMARY.qxd 29/08/2024 3:47 PM Page 98
PMID:39215425
Gene: ABCA4
HGNC ID: 34
case27-year-old male, the brother of case 1
DiseaseAssertion: Table 1 The summary of the clinical assessment of IRD patients’ family in this research fro there down they did a whole pannel on the family
Pedigree one can be fore form the beggginnings of case presention section?
CasePresentingHPOs: Case 2, a 27-year-old male, the brother of case 1 had blurry vision which was not corrected with an eyeglass and inconveniences under bright light starting from 14 years ago. Case 2 also underwent a fundus examination after finding that case 1 was RP. In further examination of those patients and their family members found that case 1 was confirmed as RP and case 2
CaseHPOFreeText:NA
CaseNotHPOs:NA
CaseNotHPOFreeText:NA
Genotyping Method:NA
PreviouslyPublished:NA
Variant:NA
ClinVar:
CAID:NA
SupplementalData:NA
Inheritance pattern Autosomal Recessive
WDR19-associated retinopathy presenting with adult-onset Stargardt-likephenotype
PMID:39967245
Gene: ABCA4
HGNC ID: 34
Case#:39 man
DiseaseAssertion:NA
FamilyInfo:NA
CasePresentingHPOs:Snellen in both eye, visual impairment with night blindnessisual acuity was 20/20Snellen in both eyes, with a minor correction for astig-matism. The anterior segment and intraocular pressurewere within normal limits. On fundus examination, dif-fuse fleck-like lesions were scattered both inside and out-side the arcades, while sharply demarcated areas ofmacular atrophy with foveal sparing, more pronouncedin the left eye, were visible.
CaseHPOFreeText:NA
CaseNotHPOs:NA
CaseNotHPOFreeText:
Genotyping Method:Next-Generation Sequencing (NGS), using theTruSight One Clinical Exome sequencing panel on anIllumina NexSeq500 platform, enriching for 4800 genesincluding ABCA4, CNGB3, ELOVL4, PROM1, and PRPH2
PreviouslyPublished:Under refernces?
Variant:WDR19 variants:the novel deletion at c.1777 + 1 within the donor splicingsite (class 4) and the rare c.1430 G>T variant causing theamino-acid substitution p.(Arg477Leu) (class 3) in the putative protein. Additionally, a heterozygous c.1793A>G(class 3) variant in the CDH23 gene was found, though it was deemed as not contributive to the patient’s clinical phenotype. All reported variants were confirmed throughSanger sequencing
ClinVar:NA
CAID:NA
SupplementalData:NA
The STGD patient from Family 12 is a compound heterozygous with p.Val931Met and a novel nonsense mutation at exon 33 (p.Glu1574X; Figure 1B). Disease onset for this patient was at age 43. Ophthalmic examination revealed moderate central retinal changes, decreased mfERG responses exclusively in the central 15 degrees, and decreased visual acuity.
Case#: Family 12 Proband, male, 43yo at onset, Portuguese
DiseaseAssertion: Stargardt
FamilyInfo: no affected family members in pedigree (Fig. 1)
CasePresentingHPOs: HP:0007663
CaseHPOFreeText: "The criteria for STGD phenotype included bilateral central vision loss and pigmentary macular lesions, normal caliber of retinal vessels, absence of pigmented bone spicules, and compatibility with recessive mode of inheritance." Moderate central retinal changes, decreased mfERG responses exclusively in the central 15 degrees
CaseNotHPOs:
CaseNotHPOFreeText:
PreviouslyPublished: n/a
Variant: p.Glu1574X; p.Val931Met. Several other polymorphisms also reported. ABCR400 gene chip microarray, DHPLC
ClinVar: 1460063
CAID: CA341283936
SupplementalData: n/a
Mutation scanning and direct DNA sequencing of all 50 exons of ABCR were completed for 150 families segregating recessive Stargardt disease (STGD1). ABCR variations were identified in 173 (57%) disease chromosomes, the majority of which represent missense amino acid substitutions. These ABCR variants were not found in 220 unaffected control individuals (440 chromosomes) but do cosegregate with the disease in these families with STGD1, and many occur in conserved functional domains. Missense amino acid substitutions located in the amino terminal one-third of the protein appear to be associated with earlier onset of the disease and may represent misfolding alleles. The two most common mutant alleles, G1961E and A1038V, each identified in 16 of 173 disease chromosomes, composed 18.5% of mutations identified. G1961E has been associated previously, at a statistically significant level in the heterozygous state, with age-related macular degeneration (AMD). Clinical evaluation of these 150 families with STGD1 revealed a high frequency of AMD in first- and second-degree relatives. These findings support the hypothesis that compound heterozygous ABCR mutations are responsible for STGD1 and that some heterozygous ABCR mutations may enhance susceptibility to AMD.
Annotating here since the full text is a PDF.
Case#: Family AR321 proband, US, 6yo at onset
DiseaseAssertion: Stargardt
FamilyInfo: proband and two other siblings are affected
CasePresentingHPOs: The essential and defining features of STGD were (1) pedigrees with at least one living affected individual compatible with autosomal recessive inheritance; (2) an ophthalmoscopically characteristic retinal disorder in families with both parents living; (3) bilateral central visual loss with both “beaten metal” elliptical foveal dystrophy and temporal pallor of the optic discs, documented by retinal color photography, with or without yellow-pigment epithelial flecks in the macular and/or retinal “near periphery”; and (4) the characteristic fluorescein angiographic feature of a dark choroid (Blacharski 1988).
CaseHPOFreeText:
CaseNotHPOs:
CaseNotHPOFreeText: (1) evidence of autosomal dominant inheritance; (2) any history of night blindness, loss of peripheral vision, or "retinitis pigmentosa"; (3) cataracta complicata or cells in the vitreous; (4) substantially abnormal electroretinographic or electrooculographic responses; (5) no fluorescein angiography performed or no dark choroid documented; (6) neurological disease (including loss of cognition or seizures); 7) drug exposures (especially to antimalarial and agents known to cause crystalline retinopathies); or (8) any "atypical" maculopathies in which a unique diagnosis of STGD could not be established.
PreviouslyPublished: PMID: 8533764
Variant: c.3113C>T p.A1038V; c.1715G>C p.R572P . Heteroduplex and SSCP analyses were used to screen the 50 exons of ABCA4. Linkage analysis and haplotype analysis were previously performed
ClinVar: 99073
CAID: CA226919
SupplementalData: n/a
JB260 Stargardt ABCA4 c.6119G>A p.Arg2040Gln rs148460146 Zernant et al (2014)50 c.2879del p.Ala960Aspfs*17 N/A
Case#: Bryant Subject JB260, US
DiseaseAssertion: Stargardt
FamilyInfo:
CasePresentingHPOs: "Stargardt disease is a childhood-onset macular degeneration and is most commonly caused by mutations in ABCA4. Characteristic yellow flecks are typically seen under the macula during a fundus exam."
CaseHPOFreeText:
CaseNotHPOs:
CaseNotHPOFreeText:
GenotypingMethod: WES; previously screened using arrayed primer extension (APEX) multigene panels for the relevant disease and no disease-causing variants had been identified; PCR and Sanger for verification
PreviouslyPublished: n/a
Variant: c.6119G>A p.Arg2040Gln; c.2879del p.Ala960Aspfs*17
CAID: CA232815
SupplementalData:
See Supplementary Table S2 for a complete genotypic glossary of the cohort.
Case#: Patients were identified from the inherited retinal disease (IRD) database at UC San Diego (UCSD).
DiseaseAssertion: RP with macular edema
FamilyInfo:
CasePresentingHPOs:
CaseHPOFreeText: Dx of RP based on "a history of progressive peripheral vision loss or nyctalopia, and ocular examination findings of RP including bone spicule pigmentation, disc pallor and attenuated vessels and genetic confirmation."
CaseNotHPOs:
CaseNotHPOFreeText:
GenotypingMethod: Next-generation sequencing (NGS), exome sequencing, and/or targeted Sanger sequencing were the primary genetic testing approaches.
PreviouslyPublished: PMID:10206579 is referenced but it seems a reference to the variant and not the proband
Variant: c.6383A>G (p.His2128Arg); c.3G>T (p.Met1?). phase unknown
ClinVar: 99455
CAID: CA227399
SupplementalData: Variant is found in table S2
Intriguing commment : gvibhor
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