Clinical Trials

Date: 2018-01-08

Type of information: Results

phase: 2

Announcement: results - discontinuation of development

Company: Axovant Sciences (USA - NY)

Product: intepirdine (RVT-101)

Action mechanism: selective 5-HT6 receptor antagonist

Disease: dementia with Lewy bodies (DLB)

Therapeutic area: Neurodegenerative diseases

Country:

Trial details:

• The global, multi-center, randomized, double-blind, placebo-controlled, parallel-group Phase 2b HEADWAY study evaluated the efficacy, safety and tolerability of two doses of intepirdine (35 mg and 70 mg) over a 24-week treatment period in 269 patients with DLB. Individuals receiving stable background therapy for DLB were allowed to participate in the study. The primary efficacy endpoint was the change from baseline to week 24 in motor function as measured by the UPDRS Part III. The co-secondary endpoints were the change from baseline to week 24 in cognition as measured by the ADAS-Cog and the change in baseline in global function as measured by the CIBIC+. Individuals who completed the HEADWAY study were eligible to receive intepirdine in an extension study. (NCT02669433)

Latest news:

• • On January 8 , 2018, Axovant Sciences announced that its investigational drug intepirdine did not meet its primary efficacy endpoints in the Phase 2b HEADWAY and pilot Phase 2 Gait and Balance studies.
• In the HEADWAY study of intepirdine in patients with dementia with Lewy bodies (DLB), neither 35 mg nor 70 mg of intepirdine resulted in statistically significant improvements after 24 weeks of treatment compared with placebo-treated patients. In motor function, as measured by the UPDRS Part III, 35 mg of intepirdine caused a 2.01 point worsening versus placebo (p=0.158) and 70 mg of intepirdine caused a 0.74 point improvement versus placebo (p=0.607). In cognition, as measured by the Alzheimer’s Disease Assessment Scale-Cognitive Subscale (ADAS-Cog), 35 mg of intepirdine caused a 0.47 point worsening versus placebo (p=0.653) and 70 mg of intepirdine caused a 0.67 point improvement versus placebo (p=0.527). In global function, as measured by the Clinician Interview-Based Impression of Change plus caregiver interview (CIBIC+), 35 mg of intepirdine caused a 0.15 point improvement versus placebo (p=0.395) and 70 mg of intepirdine caused a 0.07 point improvement versus placebo (p=0.701).
• Previously defined co-primary endpoints for the HEADWAY study were the CIBIC+ and a computerized cognitive battery (CCB). Intepirdine did not achieve statistical significance on the CCB, with 35 mg of intepirdine resulting in a composite z-score of a 0.38 worsening versus placebo (p=0.452) and 70 mg of intepirdine resulting in a composite z-score of a 0.36 improvement versus placebo (p=0.471).
• In the study of intepirdine in patients with dementia and gait impairment, 35 mg of intepirdine did not result in any improvement in gait speed (1.90 cm per second worsening versus placebo, p=0.357). Intepirdine was generally well tolerated in these studies.
• “Based on the totality of intepirdine data to date, there is no evidence to support its further development,” said David Hung, M.D., chief executive officer of Axovant.

Is general: Yes