Spermatogenic failure-74 (SPGF74) is characterized by nonobstructive azoospermia and male infertility due to complete meiotic arrest at the spermatocyte zygotene or pachytene stage. Some men exhibit reduced testicular volume and/or reduced testosterone level (Wyrwoll et al., 2022).
For a general phenotypic description and discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from
OMIM]