_:vb50940877 . _:vb50940877 . _:vb50940877 "An orofacial cleft that has_material_basis_in mutation in the MSX1 gene on chromosome 4p16."^^ . _:vb50940877 . _:vb50940877 . _:vb50940877 . _:vb50940877 "url:https://www.ncbi.nlm.nih.gov/pubmed/10742093"^^ . _:vb50940877 "url:https://www.ncbi.nlm.nih.gov/pubmed/12807959"^^ .