MedGen

Spermatogenic failure-5 (SPGF5) is a form of male infertility associated with large-headed, multiflagellar, polyploid spermatozoa (Dieterich et al., 2007). For a general phenotypic description and a discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from OMIM]

Spermatogenic failure-77 (SPGF77) is characterized by male infertility due to extreme oligozoospermia or azoospermia. Nearly all spermatozoa present on semen analysis are morphologically abnormal, with amorphous, enlarged, and/or fragmented heads, and some are multiflagellated. Testicular tissue shows arrest at the round spermatid stage (Wyrwoll et al., 2022). For a general phenotypic description and a discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from OMIM]

X-linked spermatogenic failure-7 (SPGFX7) is characterized by male infertility due to significantly reduced sperm concentration and progressive motility, with abnormalities of the head and flagella. Patient sperm show insufficient individualization, excessive residual cytoplasm, and defects in acrosome development (Zhang et al., 2023). For a discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from OMIM]