_:vb50944315 . _:vb50944315 "An isolated ectopia lentis that has_material_basis_in heterozygous mutation in the FBN1 gene on chromosome 15q21."^^ . _:vb50944315 . _:vb50944315 . _:vb50944315 . _:vb50944315 . _:vb50944315 "url:https://www.ncbi.nlm.nih.gov/pubmed/15054843"^^ .