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Can CSF biomarkers or pre-treatment progression rate predict response to cholinesterase inhibitor treatment in Alzheimer's disease?
MedLine Citation:
PMID:  19123199     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
OBJECTIVE: The main objective of this study was to investigate possible predictors of response to cholinesterase inhibitor (ChEI) treatment, including pre-treatment progression rates and levels of the cerebrospinal fluid (CSF) biomarkers. A secondary objective was to evaluate whether treatment with ChEI changed progression. METHODS: Out-patient individuals (n = 191) with the clinical diagnosis of Alzheimer's disease received ChEI treatment and were part of the Swedish Alzheimer Treatment Study (SATS), a prospective, longitudinal, non-randomised study in a routine clinical setting. Patients were assessed with MMSE, ADAS-cog and a global rating (CIBIC) at baseline, 2 months and every 6 months for a total period of 3 years. The following potential predictors of treatment response were investigated: age, gender, APOE epsilon 4 carrier, education, duration of disease, cognitive level, pre-treatment progression rate (in MMSE) and the levels of the CSF biomarkers A beta 42, T-tau and P-tau. RESULTS: Fast pre-treatment progression rate was a predictor of treatment response even after adjusting for baseline severity, another positive predictor of response. Patients in the fastest quartile of pre-treatment progression rates were significantly more prone to be responders at 2 months (adjusted OR 6.6, p = 0.001) and 6 months (adjusted OR 10.4, p < 0.001) than those in the slowest progressing quartile. Moreover, the linearity of progression was significantly changed by ChEI treatment at 6 months compared to the pre-treatment period. CONCLUSION: The rate of pre-treatment progression was the most consistent positive predictor of ChEI treatment response in the routine clinical setting. The progression rate was significantly changed by ChEI treatment.
Authors:
A K Wallin; O Hansson; K Blennow; E Londos; L Minthon
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of geriatric psychiatry     Volume:  24     ISSN:  1099-1166     ISO Abbreviation:  Int J Geriatr Psychiatry     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-05-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8710629     Medline TA:  Int J Geriatr Psychiatry     Country:  England    
Other Details:
Languages:  eng     Pagination:  638-47     Citation Subset:  IM    
Copyright Information:
(c) 2009 John Wiley & Sons, Ltd.
Affiliation:
Clinical Memory Research Unit, Department of Clinical Sciences, Lund University, Malmö, Sweden. asa.k.wallin@skane.se
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