Case#: Taiwanese newborn

DiseaseAssertion: MPS-I

FamilyInfo: Probands mother and father had genetic testing conducted.

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CaseEnzymeAssay: Patient had lower enzyme activities than the reference value, 9.03–69.52 µmol/L blood*20 h. Not specifically stated which value is the patient's but IDUA activity for 2 newborns were between 6.8–37.0 µmol/g protein/h.

CaseUrineGAGs: uGAG quantification results were in the normal range for all three patients (reference range; 44.6 ± 23.7 mg/mmol creatinine); however, the 2-D EP results showed unclear HS but significant DS level for two affected patients.

CaseERT: N/A

CaseBMT: N/A

Variant1: c.344G > T (D119Y). The article states that the point mutation was c.344G>T (D119Y) but it is assumed that this is a typo.

Variant1ClinVarID: 2432701

Variant1CAID: CA2801882

Variant2: c.99T>G (H33Q)

Variant2ClinVarID: 92651

Variant2CAID: CA145894

AdditionalVariants: N/A

ParentalGenotype: c.344G > T (D119Y) was inherited from the father and c.99T > G (H33Q) was inherited from the mother.

PreviouslyPublished Yes, PMID:24053568

Case#: Infant B

DiseaseAssertion: MPSI

FamilyInfo:

CasePresentingHPOs:

CaseHPOFreeText:

CaseNotHPOs:

CaseNotHPOFreeText:

CaseEnzymeAssay: Newborn screening, dried blood spot, modification of method published by Chamoles et al, IDUA activity <9.03 umol/L blood*20 on initial and repeat testing.

CaseUrineGAGs: Urinary GAG obtained as part of confirmatory testing but results are not presented.

CaseERT:

CaseBMT:

Variant1: c.344 G>T (D119Y), paternal origin

Variant1ClinVarID:

Variant1CAID:

Variant2: c.99 T>G (H33Q), maternal origin

Variant2ClinVarID:

Variant2CAID:

AdditionalVariants:

ParentalGenotype: c.344 G>T (paternal) / c.99 T>G (maternal)

PreviouslyPublished No

Case#: Infant #3, male.

DiseaseAssertion: MPS-I

FamilyInfo: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CaseEnzymeAssay: 2.10 IDUA enzyme activity (Ref. 5.9–27.8 μmol/g protein/h)

CaseUrineGAGs: DMB/Cre. Ratio - 24.99, DS - 0.11, HS - 0.17, KS - 0.83 GAG quantifications (DMB/Cre ratio) and the normal reference values based on the age groups: <6 mos: <70.68 mg /mmol cre.; 6 mos–2 yrs: <46.80 mg /mmol cre.; 2–17 yrs: <20.98 mg /mmol cre.; and >18 yrs: <12.62 mg /mmol cre. Quantitative analyses of GAG-derived disaccharides (DS, S, or KS) by tandem mass spectrometry assay. The normal cut-off values: DS < 0.80 μg/mL; HS < 0.78 μg/mL; and KS < 7.90 μg/mL.

CaseERT: N/A

CaseBMT: N/A

Variant1: c.355G>T (p.D119Y)

Variant1ClinVarID: 2432701

Variant1CAID: CA2801882

Variant2: c.617C>T (p.S206L)

Variant2ClinVarID: 1436435

Variant2CAID: CA2802033

AdditionalVariants: N/A

ParentalGenotype: N/A

PreviouslyPublished N/A