PMID- 24247022 OWN - NLM STAT- MEDLINE DCOM- 20141216 LR - 20151119 IS - 1421-9824 (Electronic) IS - 1420-8008 (Linking) VI - 37 IP - 3-4 DP - 2014 TI - Phase II crossover trial of varenicline in mild-to-moderate Alzheimer's disease. PG - 232-45 LID - 10.1159/000355373 [doi] AB - BACKGROUND: Evidence supports a role of alpha4beta2 receptors in Alzheimer's disease (AD). METHODS: This Korean, multicenter, double-blind, two-period (6 weeks each), crossover study randomized participants to the order in which they received varenicline (1 mg twice daily) and placebo. Assessments included AD Assessment Scale-Cognitive Subscale (ADAS-Cog) 75, Neuropsychiatric Inventory (NPI), adverse events (AEs) and Columbia-Suicide Severity Rating Scale (C-SSRS). RESULTS: For varenicline versus placebo (n = 66 randomized), there was no significant difference in the week 6 least square (LS) mean ADAS-Cog 75 total score (primary endpoint; 18.07 vs. 18.49; p = 0.3873) and a slight worsening in the week 6 LS mean NPI (3.82 vs. 2.55; p = 0.0468), primarily driven by decreased appetite/eating. Common treatment-related AEs were nausea (23.3; 3.4%), vomiting (15.0%; 0) and decreased appetite (15.0; 6.8%). CONCLUSIONS: Varenicline did not improve cognition, behavior or global change in this population. The most frequent varenicline-associated AEs were gastrointestinal; psychiatric AEs were rare and similar between the groups. FAU - Kim, Seong Yoon AU - Kim SY AD - Department of Psychiatry, Asan Medical Center, Seoul, South Korea. FAU - Choi, Seong Hye AU - Choi SH FAU - Rollema, Hans AU - Rollema H FAU - Schwam, Elias M AU - Schwam EM FAU - McRae, Tom AU - McRae T FAU - Dubrava, Sarah AU - Dubrava S FAU - Jacobsen, Janice AU - Jacobsen J LA - eng SI - ClinicalTrials.gov/NCT00744978 PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20131114 PL - Switzerland TA - Dement Geriatr Cogn Disord JT - Dementia and geriatric cognitive disorders JID - 9705200 RN - 0 (Benzazepines) RN - 0 (Nicotinic Agonists) RN - 0 (Placebos) RN - 0 (Quinoxalines) RN - W6HS99O8ZO (Varenicline) SB - IM MH - Aged MH - Aged, 80 and over MH - Alzheimer Disease/*drug therapy MH - Benzazepines/*administration & dosage/blood/pharmacokinetics MH - Cognition/*drug effects MH - Cross-Over Studies MH - Double-Blind Method MH - Female MH - Humans MH - Male MH - Middle Aged MH - Nicotinic Agonists/*administration & dosage/blood/pharmacokinetics MH - Placebos MH - Quinoxalines/*administration & dosage/blood/pharmacokinetics MH - Severity of Illness Index MH - Treatment Outcome MH - Varenicline EDAT- 2013/11/20 06:00 MHDA- 2014/12/17 06:00 CRDT- 2013/11/20 06:00 PHST- 2013/06/28 00:00 [accepted] PHST- 2013/11/20 06:00 [entrez] PHST- 2013/11/20 06:00 [pubmed] PHST- 2014/12/17 06:00 [medline] AID - 000355373 [pii] AID - 10.1159/000355373 [doi] PST - ppublish SO - Dement Geriatr Cogn Disord. 2014;37(3-4):232-45. doi: 10.1159/000355373. Epub 2013 Nov 14.