Oxidative stress sensitivity is also observed in DUX4‐expressing myoblasts (Bosnakovski et al, 2008), providing a genotype‐to‐phenotype link, and anti‐oxidant therapies have been clinically trialled in FSHD (Passerieux et al, 2015). The gene discussed is DUX4; the disease is facioscapulohumeral muscular dystrophy.