Case: 6, femaly, 16yo, congenital onset of symptoms

CasePresentingHPOs: HP:0003327, HP:0008959, HP:0009053, HP:0002650 (axial muscle weakness, distal upper limb muscle weakness, distal lower limb muscle weakness, scoliosis)

HPOsFreeText: normal CK

CaseNotHPOs:

NotHPOsFreeText: no respiratory or cardiac involvement

FamilyInfo: family history, pedigree in Figure 1

DiseaseEntity: no assertion

InheritancePattern: no assertion

CasePreviousTesting: see below

CaseGenotypingMethod: 9 cases underwent targeted Sanger sequencing of MYH7, 12 cases underwent Motorplex analysis (NGS of 93 myopathy-related genes - PMID:25214167), all MYH7 variants confirmed via Sanger sequencing, segregation analysis performed on available family members, which cases received which sequencing technique is not specified

Variant: NM_000257.4(MYH7):c.4807G>C (p.Ala1603Pro)

ClinVar: 190407, https://www.ncbi.nlm.nih.gov/clinvar/variation/190407/

gnomAD: absent