Spinobulbar muscular atrophy (SBMA, OMIM 313200), also known as Kennedy’s disease, is a genetic neuromuscular disease caused by the presence of over 37 expansions of a microsatellite CAG trinucleotide tandem repeat encoding a polyglutamine (polyQ) tract in exon 1 of the androgen receptor (AR) gene1. This evidence concerns the gene AR and Genetic neuromuscular disease.