This family of proteins is found in eukaryotes. The family is localised close to the D4Z4 repeats on chromosome 4 and 10 that are associated with the autosomal dominant facioscapulohumeral muscular dystrophy (FSHD). FRG2 are transcriptionally upregulated in FSHD myoblast cultures suggesting involvement in the pathogenesis of FSHD [1].

1: FRG2, an FSHD candidate gene, is transcriptionally upregulated in differentiating primary myoblast cultures of FSHD patients. Rijkers T, Deidda G, van Koningsbruggen S, van Geel M, Lemmers RJ, van Deutekom JC, Figlewicz D, Hewitt JE, Padberg GW, Frants RR, van der Maarel SM; J Med Genet. 2004;41:826-836. PMID:15520407