From: Low penetrance in facioscapulohumeral muscular dystrophy type 1 with large pathological D4Z4 alleles: a cross-sectional multicenter study
ICs
Affected carriers
n (%)
Facial weakness
49 (75%)
20 (59%)
Scapular weakness
65 (100%)
32 (94%)
Pectoral weakness
55 (85%)
Abdominal weakness
51 (78.5%)
Asymmetry
23 (68%)
Steppage
31 (48%)
2 (6%)