More recently, the clinical findings of an elevated serum follicle stimulating hormone (FSH) higher than 7.6 IU/L and smaller volume testicles with a long axis of 4.6 cm or less has been established to predict the etiology of azoospermia to be due to spermatogenic dysfunction, or NOA [7]. The gene discussed is BRD2; the disease is Azoospermia.