_:vb50944000 "A brachydactyly characterized by autosomal dominant inheritance of malformations of the middle phalanx of the index finger and anomalies of the second toe that has_material_basis_in heterozygous mutation in the BMPR1B gene on chromosome 4q or in the GDF5 gene on chromosome 20q11 or heterozygous duplication in a regulatory element of BMP2 on chromosome 20p12."^^ . _:vb50944000 "url:https://www.ncbi.nlm.nih.gov/pubmed/14523231"^^ . _:vb50944000 . _:vb50944000 . _:vb50944000 . _:vb50944000 "url:https://www.ncbi.nlm.nih.gov/pubmed/16127465"^^ . _:vb50944000 . _:vb50944000 . _:vb50944000 "url:https://www.ncbi.nlm.nih.gov/pubmed/21357617"^^ .