. . . . . . . "[The main conclusions of this review are as follows: (i) the brain 5-HT deficiency contributes to the mechanism underlying SAD, (ii) TPH2 is involved in the regulation of some kinds of genetically defined affective disorders and (iii) the activation of 5-HT synthesis with exogenous l-tryptophan alone or in combination with light therapy could be effective in SAD treatment.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2017-02-19"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2017-10-17T13:19:05+02:00"^^ . . . . . . . . . . . "v5.0.0.0" . "v5.0.0" .