SOX30 is amembers of the SOX (Sry-related High Motility Group (HMG) box) gene family encode transcription factors that are highly conserved and are important for a range of developmental processes, including sex determination, neuronal development and regulation of stem cell pluripotency. SOX30 is the sole representative of SOX group H and is a relatively divergent member, with an HMG domain only 46% identical to the SOX-HMG box consensus sequence.SOX30 is a key transcription factor necessary for normal progression of spermatogenesis at the post-meiotic spermiogenesis phase.