_:vb50939862 . _:vb50939862 . "disease_ontology"^^ . . "OMIM:615841"^^ . . _:vb50939862 . _:vb50939862 . . _:vb50939862 . "spermatogenic failure 13"^^ . "DOID:0070182"^^ . "A male infertility characterized by autosomal recessive inheritance of azoospermia or oligozoospermia that has_material_basis_in mutation in the TAF4B gene on chromosome 18q11."^^ . . "SPGF13"@en .