Spermatogenic failure-24 (SPGF24) is characterized by multiple morphologic abnormalities of the flagella (MMAF), including absent, short, coiled, bent, and irregular-caliber flagella. Malformations of the sperm head have also been observed. In addition, patients exhibit very low sperm concentrations and total sperm counts per ejaculate (Dong et al., 2018).
For a general phenotypic description and a discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from
OMIM]