Figure 2From: Low penetrance in facioscapulohumeral muscular dystrophy type 1 with large pathological D4Z4 alleles: a cross-sectional multicenter study Age-related cumulative risk of being clinically affected according to the number of RUs. Estimates obtained on 65 IC and 25 unaffected carriers using the Kaplan-Meier analysis. Blue line refers to 6–8 RUs; Red line refers to 9–10 RUs. Carriers 6–8 RUs versus 9–10 RUs, Log-Rank test P = 0.0584.Back to article page