. . . . . . . . . . . . "[Haploinsufficiency of the gene encoding for transcription factor 4 (TCF4) was recently identified as the underlying cause of Pitt-Hopkins syndrome (PTHS), an underdiagnosed mental-retardation syndrome characterised by a distinct facial gestalt, breathing anomalies and severe mental retardation.]. 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 . "2014-10-02T12:32:13+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .