Abstract
Background/Aim: Recent data have indicated that the rs1080985 single nucleotide polymorphism (SNP) of the cytochrome P450 (CYP) 2D6 and the common apolipoprotein E (APOE) gene may affect the response to donepezil in patients with Alzheimer's disease (AD). We investigated this association in Chinese patients with mild-to-moderate AD. Methods: In this prospective cohort study, analyses of CYP2D6 and APOE were conducted in 208 native Chinese patients with mild-to-moderate AD. All patients were treated with donepezil 5 mg/day for 6 months, and the response to treatment was assessed using the Mini-Mental State Examination. Results: No significant differences between responders (68.9%) and nonresponders (31.1%) to donepezil treatment (6 months' duration) were observed in the distribution of the CYP2D6 rs1080985 SNP, common APOE polymorphism or a combination of the two. Conclusions: Our results suggest that neither the CYP2D6 nor the APOE polymorphism influences the 6-month response to donepezil treatment in a Chinese population with AD.
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