. . . . . . . "[Several alleles of introns or untranslated regions in the presenilin-1 (PS-1) and presenilin-2 (PS-2) genes have been reported to behave as risk factors for senile Alzheimer's disease (AD).]. 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 . "2017-10-17T13:15:42+02:00"^^ . . . . . . . . . . . "v5.0.0.0" . "v5.0.0" .