_:vb50939101 . _:vb50939101 . _:vb50939101 . _:vb50939101 "url:https://www.ncbi.nlm.nih.gov/pubmed/25795793"^^ . _:vb50939101 . _:vb50939101 . _:vb50939101 "A Noonan syndrome that has_material_basis_in heterozygous mutation in the SOS2 gene on chromosome 14q21."^^ .