. . . . . . . . . . . . "[Four verified PS2 familial Alzheimer disease (FAD) mutations cause substantial changes in the Abeta 42/40 ratio, like PS1 mutations that cause very-early-onset FAD and may represent partial loss of function mutations ]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2009-03-31"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2016-05-13T12:43:21+02:00"^^ . . . . . . . . . . . "v4.0.0.0" . "v4.0.0" .