We then derived the overall kinetics of FRG1 expression during myogenic differentiation of FSHD and control cells as median values of FRG1 expression at each point of differentiation (days 0, 1, 4 and 8), after the subtraction of the value at day 0 (Figure 2c). The gene discussed is FRG1; the disease is facioscapulohumeral muscular dystrophy.