Monarch Disease Ontology entry MONDO_0014961 (spermatogenic failure 16) can be described as follows. Any azoospermia in which the cause of the disease is a mutation in the SUN5 gene. Also known as: SPGF16, SUN5 azoospermia, azoospermia caused by mutation in SUN5, spermatogenic failure 16; SPGF16, spermatogenic failure type 16.