Globozoospermia

Globozoospermia is a rare form of teratozoospermia, mainly characterized by round-headed spermatozoa that lack an acrosome. Acrosome plays an important role at the site of sperm-zona pellucida binding during the fertilization process. It was suggested that a homozygous mutation in SPATA16 was associated with male infertility in human globozoospermia. It has also been reported that a recurrent deletion of DPY19L2 causes infertility in man by blocking sperm head elongation and acrosome formation.