_:vb50946099 . _:vb50946099 . _:vb50946099 . _:vb50946099 . _:vb50946099 "url:https://pubmed.ncbi.nlm.nih.gov/31654588/"^^ . _:vb50946099 . _:vb50946099 "A spermatogenic failure characterized by high prevelance of acephalic sperm and reduced progressive motility of sperm that has_material_basis_in homozygous or compound heterozygous mutation in CEP112 on chromosome 17q24.1."^^ .