Brexpiprazole for the treatment of agitation associated with dementia due to Alzheimer's disease: A 12-week,active-treatment,extension trial

Abstract

Background

A 12-week randomized controlled trial demonstrated that brexpiprazole is efficacious for treating agitation in patients with dementia due to Alzheimer's disease.

Objective

To assess the long-term safety and tolerability of brexpiprazole for the treatment of agitation associated with dementia due to Alzheimer's disease.

Methods

This 12-week, active-treatment (oral brexpiprazole 2 or 3 mg/day) extension trial ran from October 2018–September 2022 at 66 sites in Europe/US. Patients with agitation in dementia due to Alzheimer's disease in a care facility/community-based setting who completed the randomized trial were eligible (N = 259 enrolled/analyzed for safety; 88.4% completed). Stable Alzheimer's disease medications were permitted. The primary safety endpoint was the frequency and severity of treatment-emergent adverse events (TEAEs). Change in Cohen-Mansfield Agitation Inventory (CMAI) total score was an exploratory efficacy endpoint.

Results

Mean (SD) age was 74.3 (7.6) years, 145 patients (56.0%) were female, and 248 (95.8%) were White. TEAEs were reported by 67 patients (25.9%), most commonly headache (3.5%) and fall (2.3%). Most TEAEs were mild or moderate in severity; 5 patients (1.9%) reported a severe TEAE, including 3 severe falls attributed to tripping, misjudging sitting, or dehydration. Twelve patients (4.6%) discontinued due to TEAEs. No patients died. Mean CMAI total score improved by 9.1 points over 12 weeks.

Conclusions

Considering the randomized and extension trials together, brexpiprazole 2 or 3 mg was generally well tolerated for up to 24 weeks in elderly patients with agitation associated with dementia due to Alzheimer's disease. Patients showed continued improvement in agitation.

ClinicalTrials.gov identifier

NCT03594123 (registration date: July 11, 2018).