. "DOID:0111922"^^ . "SPGF31"^^ . . "spermatogenic failure 31"^^ . "OMIM:618112"^^ . _:vb50945742 . _:vb50945742 . _:vb50945742 . . "disease_ontology"^^ . "A male failure due to acephalic spermatozoa that is characterized by oligozoospermia with a high proportion of acephalic sperm that has_material_basis_in homozygous or compound heterozygous mutation in PMFBP1 on chromosome 16q22.2."^^ . _:vb50945742 . . _:vb50945742 .