CD4 and facioscapulohumeral muscular dystrophy: We evaluated immune infiltration in FSHD muscles and consistently with previous reports [3, 13, 18, 19], we found that the most prevalent immune cell infiltrates in our cohort of FSHD muscles were T lymphocytes (both CD4+ and CD8+), and the FSHD STIR+ muscles presented the highest amount of immune cells infiltrating the tissue.