Case1: Male, 3 months onset, Australia

CasePresentingHPOs: HP:0002878, HP:0002460, HP:0001270, HP:0003701, HP:0000467, HP:0001488, HP:0002938, HP:0003691, HP:0003391, HP:0003803, HP:0003755 (Respiratory failure, Distal muscle weakness, Motor delay, Proximal muscle weakness, Neck muscle weakness, Bilateral ptosis, Lumbar hyperlordosis, Scapular winging, Gowers sign, Type 1 muscle fiber predominance, Type 1 fibers relatively smaller than type 2 fibers)

HPOsFreeText: BiPAP from 3.5 yrs, Type 2B fibers absent

CaseNotHPOs: HP:0003798, HP:0030177, HP:0031237 (Nemaline bodies, Abnormal nerve conduction study, Internally nucleated skeletal muscle fibers)

NotHPOsFreeText: N/A

CaseAddInfo: Variant is de novo with parental testing confirmed

CasePreviousTesting: Patients were diagnosed with CFTD via clinical notes and muscle biopsies at pathology centers throughout Australia and several international centers.

CaseGenotypingMethod: Two methods were used for genotyping. In 16 patients, the 10 exons spliced onto the muscle-specific isoform of TPM3 were bidirectionally sequenced from genomic DNA. For the other 7 patients, complementary DNA was generated from patient muscle and isoform-specific primers were used to sequence the transcript. Paternity was confirmed in isolated patients using microsatellite markers.

Variant: NM_152263.4(TPM3):c.733A>G (p.Arg245Gly)

ClinVar: 42117 https://www.ncbi.nlm.nih.gov/clinvar/variation/42117/

gnomAD: Not in gnomAD

Case2: Male, Birth onset, Australia

CasePresentingHPOs: HP:0008947, HP:0002460, HP:0001270, HP:0003701, HP:0000467, HP:0001488, HP:0002938, HP:0010628, HP:0003391, HP:0002942, HP:0003803, HP:0003755 (Infantile muscular hypotonia, Distal muscle weakness, Motor delay, Proximal muscle weakness, Neck muscle weakness, Bilateral ptosis, Lumbar hyperlordosis, Facial palsy, Gowers sign, Thoracic kyphosis, Type 1 muscle fiber predominance, Type 1 fibers relatively smaller than type 2 fibers)

HPOsFreeText: Type 2B fibers absent

CaseNotHPOs: HP:0003798, HP:0030177, HP:0030877, HP:0031237 (Nemaline bodies, Abnormal nerve conduction study, Obstructive deficit on pulmonary function testing, Internally nucleated skeletal muscle fibers)

NotHPOsFreeText: N/A

CaseAddInfo: Variant is de novo with parental testing confirmation

CasePreviousTesting: Patients were diagnosed with CFTD via clinical notes and muscle biopsies at pathology centers throughout Australia and several international centers.

CaseGenotypingMethod: Two methods were used for genotyping. In 16 patients, the 10 exons spliced onto the muscle-specific isoform of TPM3 were bidirectionally sequenced from genomic DNA. For the other 7 patients, complementary DNA was generated from patient muscle and isoform-specific primers were used to sequence the transcript. Paternity was confirmed in isolated patients using microsatellite markers.

Variant: NM_152263.4(TPM3):c.505A>G (p.Lys169Glu)

ClinVar: 42115 https://www.ncbi.nlm.nih.gov/clinvar/variation/42115/

gnomAD: Not in gnomAD

Family4: Australia

FamilyPresentingHPOs: HP:0002460, HP:0003701, HP:0000508, HP:0003803, HP:0003755 (Distal muscle weakness, Proximal muscle weakness, Ptosis, Type 1 muscle fiber predominance, Type 1 fibers relatively smaller than type 2 fibers)

HPOsFreeText: Type 2B fibers absent

FamilyNotHPOs: HP:0001249, HP:0030177, HP:0003798 (Intellectual disability, Abnormal nerve conduction study, Nemaline bodies)

NotHPOsFreeText: N/A

FamilyPreviousTesting: Patients were diagnosed with CFTD via clinical notes and muscle biopsies at pathology centers throughout Australia and several international centers.

FamilyGenotypingMethod: Two methods were used for genotyping. In 16 patients, the 10 exons spliced onto the muscle-specific isoform of TPM3 were bidirectionally sequenced from genomic DNA. For the other 7 patients, complementary DNA was generated from patient muscle and isoform-specific primers were used to sequence the transcript. In this family, 14 further DNA samples were sequenced and a LOD score analysis was performed.

FamilyAddInfo: Affected members of this family seem to have different symptoms based on age

FamilyPMIDs: N/A

Affected: 5

Segregations: 6

PublishedLOD: 3.01 at θ = 0

AddSegregationInfo: Candidate Gene Sequencing

ProbandLabel: Case 5

Variant: NM_152263.4(TPM3):c.298C>A (p.Leu100Met)

ClinVar: 12452 https://www.ncbi.nlm.nih.gov/clinvar/variation/12452/

gnomAD: Not in gnomAD

Case1: Male, 3 months onset, Australia

CasePresentingHPOs: HP:0002878, HP:0002460, HP:0001270, HP:0003701, HP:0000467, HP:0001488, HP:0002938, HP:0003691, HP:0003391, HP:0003803, HP:0003755 (Respiratory failure, Distal muscle weakness, Motor delay, Proximal muscle weakness, Neck muscle weakness, Bilateral ptosis, Lumbar hyperlordosis, Scapular winging, Gowers sign, Type 1 muscle fiber predominance, Type 1 fibers relatively smaller than type 2 fibers)

HPOsFreeText: BiPAP from 3.5 yrs, Type 2B fibers absent

CaseNotHPOs: HP:0003798, HP:0030177, HP:0031237 (Nemaline bodies, Abnormal nerve conduction study, Internally nucleated skeletal muscle fibers)

NotHPOsFreeText: N/A

CaseAddInfo: Variant is de novo with parental testing confirmed

CasePreviousTesting: Patients were diagnosed with CFTD via clinical notes and muscle biopsies at pathology centers throughout Australia and several international centers.

CaseGenotypingMethod: Two methods were used for genotyping. In 16 patients, the 10 exons spliced onto the muscle-specific isoform of TPM3 were bidirectionally sequenced from genomic DNA. For the other 7 patients, complementary DNA was generated from patient muscle and isoform-specific primers were used to sequence the transcript. Paternity was confirmed in isolated patients using microsatellite markers.

Variant: NM_152263.4(TPM3):c.733A>G (p.Arg245Gly)

ClinVar: 42117 https://www.ncbi.nlm.nih.gov/clinvar/variation/42117/

gnomAD: Not in gnomAD

Case2: Male, Birth onset, Australia

CasePresentingHPOs: HP:0008947, HP:0002460, HP:0001270, HP:0003701, HP:0000467, HP:0001488, HP:0002938, HP:0010628, HP:0003391, HP:0002942, HP:0003803, HP:0003755 (Infantile muscular hypotonia, Distal muscle weakness, Motor delay, Proximal muscle weakness, Neck muscle weakness, Bilateral ptosis, Lumbar hyperlordosis, Facial palsy, Gowers sign, Thoracic kyphosis, Type 1 muscle fiber predominance, Type 1 fibers relatively smaller than type 2 fibers)

HPOsFreeText: Type 2B fibers absent

CaseNotHPOs: HP:0003798, HP:0030177, HP:0030877, HP:0031237 (Nemaline bodies, Abnormal nerve conduction study, Obstructive deficit on pulmonary function testing, Internally nucleated skeletal muscle fibers)

NotHPOsFreeText: N/A

CaseAddInfo: Variant is de novo with parental testing confirmation

CasePreviousTesting: Patients were diagnosed with CFTD via clinical notes and muscle biopsies at pathology centers throughout Australia and several international centers.

CaseGenotypingMethod: Two methods were used for genotyping. In 16 patients, the 10 exons spliced onto the muscle-specific isoform of TPM3 were bidirectionally sequenced from genomic DNA. For the other 7 patients, complementary DNA was generated from patient muscle and isoform-specific primers were used to sequence the transcript. Paternity was confirmed in isolated patients using microsatellite markers.

Variant: NM_152263.4(TPM3):c.505A>G (p.Lys169Glu)

ClinVar: 42115 https://www.ncbi.nlm.nih.gov/clinvar/variation/42115/

gnomAD: Not in gnomAD

Family4: Australia

FamilyPresentingHPOs: HP:0002460, HP:0003701, HP:0000508, HP:0003803, HP:0003755 (Distal muscle weakness, Proximal muscle weakness, Ptosis, Type 1 muscle fiber predominance, Type 1 fibers relatively smaller than type 2 fibers)

HPOsFreeText: Type 2B fibers absent

FamilyNotHPOs: HP:0001249, HP:0030177, HP:0003798 (Intellectual disability, Abnormal nerve conduction study, Nemaline bodies)

NotHPOsFreeText: N/A

FamilyPreviousTesting: Patients were diagnosed with CFTD via clinical notes and muscle biopsies at pathology centers throughout Australia and several international centers.

FamilyGenotypingMethod: Two methods were used for genotyping. In 16 patients, the 10 exons spliced onto the muscle-specific isoform of TPM3 were bidirectionally sequenced from genomic DNA. For the other 7 patients, complementary DNA was generated from patient muscle and isoform-specific primers were used to sequence the transcript. In this family, 14 further DNA samples were sequenced and a LOD score analysis was performed.

FamilyAddInfo: Affected members of this family seem to have different symptoms based on age

FamilyPMIDs: N/A

Affected: 5

Segregations: 6

PublishedLOD: 3.01 at θ = 0

AddSegregationInfo: Candidate Gene Sequencing

ProbandLabel: Case 5

Variant: NM_152263.4(TPM3):c.298C>A (p.Leu100Met)

ClinVar: 12452 https://www.ncbi.nlm.nih.gov/clinvar/variation/12452/

gnomAD: Not in gnomAD

Case2: Female, Birth onset, Germany

CasePresentingHPOs: HP:0003552, HP:0001558, HP:0002375, HP:0002747, HP:0004887, HP:0001385, HP:0001537, HP:0000023, HP:0012418, HP:0000278, HP:0000347, HP:0000470, HP:0001276, HP:0002808, HP:0001376, HP:0002063, HP:0011968, HP:0000975, HP:0003236, HP:0000938, HP:0009803, HP:0030084, HP:0001561, HP:0002828, HP:0005949, HP:0001284, HP:0003198, HP:0003557, HP:0003687, HP:0010602 (Muscle stiffness, Decreased fetal movement, Hypokinesia, Respiratory insufficiency due to muscle weakness, Respiratory failure requiring assisted ventilation, Hip dysplasia, Umbilical hernia, Inguinal hernia, Hypoxemia, Retrognathia, Micrognathia, Short neck, Hypertonia, Kyphosis, Limited joint motion, Rigidity, Feeding difficulties, Profuse sweating, Elevated serum creatine phosphokinase, Osteopenia, Shortened phalanges, Clinodactyly, Polyhydramnios, Multiple joint contractures, Apneic episodes in infancy, Areflexia, Myopathic changes, Increased variability in muscle fiber diameter, Centrally nucleated skeletal muscle fibers, Type 2 muscle fiber predominance)

HPOsFreeText: Tracheostomy performed, Bladder catheter required, Inability to sit or roll, Increased echogenicity on muscle ultrasound, Treatment with carbamazepine, benzodiazepines, and baclofen reportedly provided no substantial benefit, Difficulty sitting due to hyperactivity of hip extensors, Mini rods and z-band broadening were seen in atrophic fibers

CaseNotHPOs: HP:0100543, HP:0003730, HP:0002486, HP:0002353, HP:0002363, HP:0000496, HP:0003202, HP:0003798 (Cognitive impairment, EMG: myotonic runs, Myotonia, EEG abnormality, Abnormality of brainstem morphology, Abnormality of eye movement, Skeletal muscle atrophy, Nemaline bodies)

NotHPOsFreeText: Abnormal metabolic screening, Muscle fiber type grouping

CaseAddInfo: Case is de novo and confirmed via parental testing

CasePreviousTesting: Negative ACTA1 and CRYAB

CaseGenotypingMethod: Based on the Patient 1 results, the same region of TPM3 (Exon 6) was PCR amplified and sequenced in the proband and her parents via bidirectional Sanger sequencing.

Variant: NM_152263.4(TPM3):c.654_656AGA[1] (p.Glu219del)

ClinVar: 235144 https://www.ncbi.nlm.nih.gov/clinvar/variation/235144/

gnomAD: Not in gnomAD

Case2: Female, Birth onset, Germany

CasePresentingHPOs: HP:0003552, HP:0001558, HP:0002375, HP:0002747, HP:0004887, HP:0001385, HP:0001537, HP:0000023, HP:0012418, HP:0000278, HP:0000347, HP:0000470, HP:0001276, HP:0002808, HP:0001376, HP:0002063, HP:0011968, HP:0000975, HP:0003236, HP:0000938, HP:0009803, HP:0030084, HP:0001561, HP:0002828, HP:0005949, HP:0001284, HP:0003198, HP:0003557, HP:0003687, HP:0010602 (Muscle stiffness, Decreased fetal movement, Hypokinesia, Respiratory insufficiency due to muscle weakness, Respiratory failure requiring assisted ventilation, Hip dysplasia, Umbilical hernia, Inguinal hernia, Hypoxemia, Retrognathia, Micrognathia, Short neck, Hypertonia, Kyphosis, Limited joint motion, Rigidity, Feeding difficulties, Profuse sweating, Elevated serum creatine phosphokinase, Osteopenia, Shortened phalanges, Clinodactyly, Polyhydramnios, Multiple joint contractures, Apneic episodes in infancy, Areflexia, Myopathic changes, Increased variability in muscle fiber diameter, Centrally nucleated skeletal muscle fibers, Type 2 muscle fiber predominance)

HPOsFreeText: Tracheostomy performed, Bladder catheter required, Inability to sit or roll, Increased echogenicity on muscle ultrasound, Treatment with carbamazepine, benzodiazepines, and baclofen reportedly provided no substantial benefit, Difficulty sitting due to hyperactivity of hip extensors, Mini rods and z-band broadening were seen in atrophic fibers

CaseNotHPOs: HP:0100543, HP:0003730, HP:0002486, HP:0002353, HP:0002363, HP:0000496, HP:0003202, HP:0003798 (Cognitive impairment, EMG: myotonic runs, Myotonia, EEG abnormality, Abnormality of brainstem morphology, Abnormality of eye movement, Skeletal muscle atrophy, Nemaline bodies)

NotHPOsFreeText: Abnormal metabolic screening, Muscle fiber type grouping

CaseAddInfo: Case is de novo and confirmed via parental testing

CasePreviousTesting: Negative ACTA1 and CRYAB

CaseGenotypingMethod: Based on the Patient 1 results, the same region of TPM3 (Exon 6) was PCR amplified and sequenced in the proband and her parents via bidirectional Sanger sequencing.

Variant: NM_152263.4(TPM3):c.654_656AGA[1] (p.Glu219del)

ClinVar: 235144 https://www.ncbi.nlm.nih.gov/clinvar/variation/235144/

gnomAD: Not in gnomAD