_:vb50940882 . _:vb50940882 . _:vb50940882 . _:vb50940882 "url:https://www.ncbi.nlm.nih.gov/pubmed/16990542"^^ . _:vb50940882 . _:vb50940882 . _:vb50940882 "An orofacial cleft that has_material_basis_in mutation in the SUMO1 gene on chromosome 2q33."^^ .