Spermatogenic failure-46 (SPGF46) is characterized by male infertility due to asthenoteratozoospermia. Sperm of affected men exhibit multiple morphologic abnormalities of the flagella (MMAF), including flagella that are absent, short, coiled, angulated, and/or of irregular caliber. Ultrastructural analysis shows disorganization of axonemal and periaxonemal structures (Liu et al., 2020).
For a discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from
OMIM]