Alzheimer Disease Clinical Trial
Official title:
Nabilone for Agitation Blinded Intervention Trial
This study will look at whether nabilone is an effective treatment for agitation in Alzheimer's disease (AD) patients. Agitation is highly prevalent in patients with AD and is one of the most distressing and challenging-to-treat symptoms. Agitation is associated with faster progression to institutionalization, increased caregiver burden, poorer quality of life, and increased risk of death. In addition, current pharmacological options show only modest efficacy and elevated risks of adverse events. Therefore, identifying safer and more effective treatments for agitation in AD is a clinical and research priority. Nabilone is a synthetic cannabinoid that is Health Canada-approved to treat chemotherapy-induced nausea and vomiting. The PI's research group completed a 6-week double-blind placebo-controlled randomized cross-over pilot trial in 38 patients with moderate-to-severe AD, providing the first preliminary evidence regarding the safety and efficacy of nabilone in this population. They found that nabilone significantly improved agitation, overall neuropsychiatric symptoms, and caregiver distress. That study was limited by its sample size and questions remain regarding the efficacy of nabilone for nutrition and pain and predictors of response. However, the promising preliminary findings encourage a pivotal, practice-changing phase III trial to inform clinical practice. Participants in this study will be randomized to receive either nabilone or a placebo for 8 weeks. In addition to looking at the effectiveness of nabilone in treating agitation, the researchers will also look at whether it is beneficial for other relevant outcomes for patients with AD including overall neuropsychiatric symptoms, caregiver distress, cognition, nutritional status, and pain. Participants will also be followed for 8 weeks following completion of the study treatment.
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