FRG1 and Facioscapulohumeral dystrophy: Three other genes FRG1 (FSHD Region Gene 1) [5], [6], FRG2 (FSHD Region Gene 2) [5], [7] and ANT1 (Adenine Nucleotide Translocator 1) [8] are located within the 4q35 chromosomal region and have been reported to be upregulated in FSHD patients.