Spermatogenic failure-58 (SPGF58) is characterized by male infertility due to multiple morphologic abnormalities of the flagella (MMAF). Sperm are immotile or show severely reduced progressive motility due to short and irregular caliber flagella as well as bent, coiled, and absent flagella. Head abnormalities have also been observed, including acrosomal and postacrosomal defects (Lores et al., 2021).
For a general phenotypic description and discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from
OMIM]