. . . . . . . . . . . . "[We conclude that heterozygous loss-of-function mutations in PTPN11 are a frequent cause of MC, that lesions in patients with MC appear to arise following a `second hit,` that MC may be locus heterogeneous since 1 familial and 5 sporadically occurring cases lacked obvious disease-causing PTPN11 mutations, and that PTPN11 mutations are not a common cause of Ollier disease or Maffucci syndrome.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2013-07-24"^^ . . "Gene-disease associations manually curated."@en . "DisGeNET evidence - CURATED"@en . "2014-10-02T12:32:11+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .