While FSHD biopsies regularly demonstrate endomysial CD8+ T‐cell infiltrates, detection of MHC class I on myofibres is inconsistent, with no reports of CD8+/MHC I complexes and cytotoxic T‐cell invasion of non‐necrotic myofibres (Munsat et al, 1972; Arahata et al, 1995). Here, CD8A is linked to facioscapulohumeral muscular dystrophy.