title: Presence or absence of at least one epsilon 4 allele and gender are not predictive for the response to donepezil treatment in Alzheimer's disease.
abstract: The objective was to evaluate the effects of the apolipoprotein E (ApoE) genotype and gender on the response to donepezil treatment in Alzheimer's disease. ApoE genotyping was performed on 117 patients with mild to moderate Alzheimer's disease who were included in a 36-week open label trial of donepezil therapy. Of these 117 patients, who constituted the intent-to-treat population (ITT), 80 completed the trial, and constituted the evaluable population. Patients were treated blindly in relation to ApoE genotype. Outcome measures were Alzheimer's disease Assessment Scale-Cognitive Component (ADAS-Cog), the Mini Mental State Examination, Instrumental Activities of Daily Living, and the Caregiver-rated Clinical Global Impression of Change. ITT analysis did not reveal significant differences between the responses of epsilon 4- and epsilon 4+ carriers according to the ADAS-Cog (P = 0.28). No differences were found either between the responses of men and women (P = 0.81), and there was no significant interaction between genotype and gender (P = 0.09). Other outcome measures all exhibited similar patterns of change to those seen using the ADAS-Cog. Consequently, these results do not support the hypothesis that the ApoE phenotype and gender are predictors of the response to donepezil in Alzheimer's disease patients.
authors.affiliation: Hôpital Broca, Paris, France. anne-sophie.rigaud@brc.ap-hop-paris.fr
authors.forename: Anne-Sophie
authors.initials: AS
authors.lastname: Rigaud
authors.forename: Latchezar
authors.initials: L
authors.lastname: Traykov
authors.forename: Florence
authors.initials: F
authors.lastname: Latour
authors.forename: Rémy
authors.initials: R
authors.lastname: Couderc
authors.forename: Florence
authors.initials: F
authors.lastname: Moulin
authors.forename: Françoise
authors.initials: F
authors.lastname: Forette
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D000544:Alzheimer Disease / Q000188:drug therapy* / Q000235:genetics*; D053327:Apolipoprotein E4; D001057:Apolipoproteins E / Q000235:genetics*; D000077265:Donepezil; D004522:Educational Status; D005260:Female; D006801:Humans; D007189:Indans / Q000627:therapeutic use*; D008297:Male; D018697:Nootropic Agents / Q000627:therapeutic use*; D010880:Piperidines / Q000627:therapeutic use*; D011237:Predictive Value of Tests; D012727:Sex Characteristics
chemical_list: D053327:Apolipoprotein E4; D001057:Apolipoproteins E; D007189:Indans; D018697:Nootropic Agents; D010880:Piperidines; D000077265:Donepezil