PAX7 and facioscapulohumeral muscular dystrophy: A consistent biomarker of FSHD is suppression of a target gene score of the transcription factor paired box 7 (PAX7) (OMIM: 167410) (Banerji et al, 2017; Banerji & Zammit, 2019), a master regulator of post‐natal myogenesis (Relaix & Zammit, 2012).