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Clinical Conference Efficacy of donepezil in early-stage Alzheimer disease: a randomized placebo-controlled trial. free! 2004
Seltzer B, Zolnouni P, Nunez M, Goldman R, Kumar D, Ieni J, Richardson S, Anonymous00081. · Department of Psychiatry and Neurology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112-2699, USA. · Arch Neurol. · Pubmed #15596605 links to free full text
Abstract: OBJECTIVE: To evaluate the efficacy of donepezil in patients with early-stage Alzheimer disease. DESIGN: Multicenter, randomized, double-blind, 24-week, placebo-controlled study that enrolled patients with early-stage Alzheimer disease. Patients were randomized in an approximately 2:1 ratio to donepezil, 5 mg/d, for the first 6 weeks, with a forced escalation to 10 mg/d thereafter (n = 96), or placebo (n = 57). The primary efficacy measure was the modified Alzheimer Disease Assessment Scale-cognitive subscale. Secondary efficacy measures included the Mini-Mental State Examination, the Computerized Memory Battery Test, the Clinical Dementia Rating Scale-Sum of the Boxes, the Patient Global Assessment Scale, and the Apathy Scale. RESULTS: Improvements favoring donepezil on the Alzheimer Disease Assessment Scale-cognitive subscale were found at weeks 12 and 24 and at the end point (last observation carried forward); treatment differences were 1.9 (P = .03), 2.3 (P = .008), and 2.3 (P = .001) points, respectively. Improvements favoring donepezil on the Mini-Mental State Examination were found at weeks 6, 12, and 24 and at the end point (last observation carried forward); treatment differences were 1.4 (P = .02), 1.2 (P = .04), 1.4 (P = .03), and 1.8 (P = .002) points, respectively. Donepezil-treated patients showed greater mean improvement compared with placebo-treated patients on the following Computerized Memory Battery Test subscales: facial recognition (P = .007 in the intent-to-treat population and P = .04 in the fully evaluable population), first and last name total acquisition (P = .02), and name-face association delayed recall (P = .04). Donepezil was safe and well tolerated in this population; serious adverse events occurred in similar numbers of donepezil- and placebo-treated patients. CONCLUSION: These data suggest significant treatment benefits of donepezil in early-stage Alzheimer disease, supporting the initiation of therapy early in the disease course to improve daily cognitive functioning.
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Clinical Conference Efficacy of donepezil in mild cognitive impairment: a randomized placebo-controlled trial. 2004
Salloway S, Ferris S, Kluger A, Goldman R, Griesing T, Kumar D, Richardson S, Anonymous00083. · Department of Clinical Neurosciences, Brown University, Providence, RI, USA. · Neurology. · Pubmed #15326237 No free full text.
Abstract: OBJECTIVE: To evaluate the efficacy and safety of the acetylcholinesterase inhibitor donepezil in a placebo-controlled trial in patients with mild cognitive impairment (MCI). METHODS: A total of 270 patients with MCI were enrolled in a 24-week, multicenter, randomized, double-blind, placebo-controlled study. Patients were randomized to receive donepezil (n = 133; 5 mg/day for 42 days, followed by forced dose escalation to 10 mg/day) or placebo (n = 137). Primary efficacy measures were the New York University (NYU) Paragraph Delayed Recall test and the Alzheimer disease (AD) Cooperative Study Clinician's Global Impression of Change for MCI (ADCS CGIC-MCI). Secondary efficacy measures included the modified AD Assessment Scale-cognitive subscale (ADAS-cog), the Patient Global Assessment (PGA), and additional neuropsychologic measures. Efficacy analyses were performed on intent-to-treat (ITT) and fully evaluable (FE) populations. RESULTS: Primary efficacy measures of the NYU Paragraph Recall test and the ADCS CGIC-MCI did not show significant treatment effects in the ITT population. Some secondary measures showed effects favoring donepezil. More donepezil-treated patients showed improvements in ADAS-cog total scores, in tests of attention and psychomotor speed, and in PGA scores. More donepezil-treated than placebo-treated patients experienced adverse events, most of which were mild to moderate and transient. CONCLUSION: Although significant treatment effects were not seen in the primary efficacy measures, outcomes on secondary measures suggest promising directions for further evaluation of donepezil treatment in patients with MCI.
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Article Donepezil treatment of patients with MCI: a 48-week randomized, placebo-controlled trial. 2009
Doody RS, Ferris SH, Salloway S, Sun Y, Goldman R, Watkins WE, Xu Y, Murthy AK. · Alzheimer's Disease and Memory Disorders Center, Baylor College of Medicine, 6550 Fannin, Suite 1801, Houston, TX 77030, USA. · Neurology. · Pubmed #19176895 No free full text.
Abstract: BACKGROUND: Treatment of mild cognitive impairment (MCI) with cholinesterase inhibitors may improve symptoms. METHODS: In this multicenter, randomized, placebo-controlled trial, subjects with MCI entered a 3-week placebo run-in period followed by 48 weeks of double-blind donepezil (5 mg/day for 6 weeks, then 10 mg/day for 42 weeks) or placebo treatment. Primary efficacy variables included change from baseline in the modified Alzheimer Disease Assessment Scale-cognitive subscale (ADAS-Cog) and Clinical Dementia Rating Scale-sum of boxes (CDR-SB) after 48 weeks of treatment (modified intention-to-treat analysis). Secondary efficacy measures evaluated cognition, behavior, and function. RESULTS: The dual primary efficacy endpoint was not reached. We noted a small, but significant, decrease in modified ADAS-Cog scores in favor of donepezil at study endpoint. Little change from baseline in CDR-SB and secondary variables was observed for either group. Patient Global Assessment scores favored donepezil at all time points except week 12 (p < or = 0.05). Perceived Deficits Questionnaire scores favored donepezil at week 24 (p = 0.05). Clinical Global Impression of Change-MCI scores favored donepezil only at week 6 (p = 0.04). Adverse events were generally mild or moderate. More donepezil-treated subjects (18.4%) discontinued treatment due to adverse events than placebo-treated subjects (8.3%). CONCLUSIONS: Donepezil demonstrated small but significant improvement on the primary measure of cognition but there was no change on the primary measure of global function. Most other measures of global impairment, cognition, and function were not improved, possibly because these measures are insensitive to change in MCI. Responses on subjective measures suggest subjects perceived benefits with donepezil treatment.
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Article Safety and efficacy of donepezil in African Americans with mild-to-moderate Alzheimer's disease. free! 2006
Griffith P, Lichtenberg P, Goldman R, Payne-Parrish J. · Section of Neurology, Morehouse School of Medicine, Atlanta, GA, USA. · J Natl Med Assoc. · Pubmed #17052048 links to free full text
Abstract: BACKGROUND: African Americans have a higher incidence and prevalence of Alzheimer's disease (AD) than whites but have been underrepresented in clinical trials, including studies of cholinesterase inhibitors. PURPOSE: The purpose of this 12-week, open-label study was to evaluate the efficacy and safety of donepezil in African Americans with mild-to-moderate AD. METHODS: Efficacy was assessed via the Mini-Mental State Examination (MMSE), Clinician's Interview-Based Impression of Change-Plus interview with the patient and caregiver (CIBIC-Plus) and Fuld Object Memory Evaluation (FOME), a measure that has been validated for use with elderly African Americans. RESULTS: Significant improvements were observed in cognition (MMSE), global function (CIBIC-Plus) and memory (all four subscales of the FOME). Donepezil was well tolerated; 51% of patients experienced adverse events, most commonly diarrhea (5.6%), hypertension (5.6%) and urinary tract infection (4.8%). CONCLUSIONS: These results suggest that donepezil is effective and safe in treating African Americans with mild-to-moderate AD, and support the value of FOME in assessing efficacy in AD trials in diverse populations.
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