spermatogenic failure type 6(redirected from round-headed spermatozoa)
spermatogenic failure type 6An autosomal recessive infertility disorder (OMIM:102530) characterised by spermatogenesis defects (especially of the acrosome, which can be completely absent in severe cases), variably accompanied by abnormal nuclear shape and abnormal arrangement of mitochondria of spermatozoa.
Caused by defects of:
(1) GOPC, which encodes a Golgi protein that plays a role in intracellular trafficking; and
(2) SPATA16, which encodes a testis-specific protein thought to play a role in spermatogenesis.