PR:000037672 presenilin-1 sequence variant V261L (human) hPSEN1/var:V261L|UniProtKB:P49768-1, Val-261, CHEBI:30006 associated_with_disease_progression DOID:10652 Alzheimer's disease Alzforum:psen1-v261l EXP NCBITaxon:9606 Alzforum:psen1-v261l 20180510 PRO:DAN