_:vb50945752 . . _:vb50945752 . _:vb50945752 . _:vb50945752 . . "spermatogenic failure 37"^^ . . _:vb50945752 . "OMIM:618429"^^ . . "A spermatogenic failure characterized by multiple morphologic abnormalities of the flagella, asthenoteratozoospermia, and infertility that has_material_basis_in homozygous or compound heterozygous mutation in TTC21A on chromosome 3p22.2."^^ . "SPGF37"^^ . "DOID:0111927"^^ . "disease_ontology"^^ .