An Efficacy and Safety Trial of Verubecestat (MK-8931) in Mild to Moderate Alzheimer's Disease (P07738)
Summary
This study consists of two parts, Part I and Part II. The purpose of Part I of the study is to assess the efficacy and safety of verubecestat (MK-8931) compared with placebo administered for 78 weeks in the treatment of Alzheimer's Disease (AD). The primary study hypotheses for Part I are that at least one verubecestat dose is superior to placebo at 78 weeks of treatment with respect to change from baseline in Alzheimer's Disease Assessment Scale Cognitive Subscale (ADAS-Cog) score and that at least one verubecestat dose is superior to placebo at 78 weeks of treatment with respect to change from baseline in Alzheimer's Disease Cooperative Study Activities of Daily Living Inventory (ADCS-ADL) score. The first approximately 400 participants entering Part I of the study are identified as the Safety Cohort. Participants who complete Part I of the study may choose to participate in Part II, which is a long term double-blind extension to assess efficacy and safety of verubecestat administered for up to an additional 260 weeks.
Timeline
- Start
- 2012-11-30
- Primary completion
- 2017-04-14
- Completion
- 2017-04-14
Outcome
Missed primary endpoint
registry analysis (superiority test); Arm A. Verubecestat 12 mg [Part I]; 12 mg [Part II] vs Arm D. Placebo [Part I]; Verubecestat 40 mg [Part II]; p = 0.6287 NCT01739348 ↗
registry analysis (superiority test); Arm B. Verubecestat 40 mg [Part I]; 40 mg [Part II] vs Arm D. Placebo [Part I]; Verubecestat 40 mg [Part II]; p = 0.4625 NCT01739348 ↗
registry analysis (superiority test); Arm A. Verubecestat 12 mg [Part I]; 12 mg [Part II] vs Arm D. Placebo [Part I]; Verubecestat 40 mg [Part II]; p = 0.4925 NCT01739348 ↗
registry analysis (superiority test); Arm B. Verubecestat 40 mg [Part I]; 40 mg [Part II] vs Arm D. Placebo [Part I]; Verubecestat 40 mg [Part II]; p = 0.3221 NCT01739348 ↗
Publications
- Sur C, Adamczuk K, Scott D, Kost J, Sampat M, Buckley C, Farrar G, Newton B, Suhy J, Bennacef I, Egan MF. Evaluation of 18F-flutemetamol amyloid PET image analysis parameters on the effect of verubecestat on brain amlyoid load in Alzheimer's disease. Mol Imaging Biol. 2022 Dec;24(6):862-873. doi: 10.1007/s11307-022-01735-z. Epub 2022 Jul 7.
- Dockendorf MF, Jaworowicz D, Humphrey R, Anderson M, Breidinger S, Ma L, Taylor T, Dupre N, Jones C, Furtek C, Kantesaria B, Bateman KP, Woolf E, Egan MF, Stone JA. A Model-Based Approach to Bridging Plasma and Dried Blood Spot Concentration Data for Phase 3 Verubecestat Trials. AAPS J. 2022 Apr 6;24(3):53. doi: 10.1208/s12248-022-00682-5.
- Sur C, Kost J, Scott D, Adamczuk K, Fox NC, Cummings JL, Tariot PN, Aisen PS, Vellas B, Voss T, Mahoney E, Mukai Y, Kennedy ME, Lines C, Michelson D, Egan MF. BACE inhibition causes rapid, regional, and non-progressive volume reduction in Alzheimer's disease brain. Brain. 2020 Dec 1;143(12):3816-3826. doi: 10.1093/brain/awaa332.
- Sergott RC, Raji A, Kost J, Sur C, Jackson S, Locco A, Patel A, Furtek C, Mattson B, Egan MF. Retinal Optical Coherence Tomography Metrics Are Unchanged in Verubecestat Alzheimer's Disease Clinical Trial but Correlate with Baseline Regional Brain Atrophy. J Alzheimers Dis. 2021;79(1):275-287. doi: 10.3233/JAD-200735.
- Egan MF, Mukai Y, Voss T, Kost J, Stone J, Furtek C, Mahoney E, Cummings JL, Tariot PN, Aisen PS, Vellas B, Lines C, Michelson D. Further analyses of the safety of verubecestat in the phase 3 EPOCH trial of mild-to-moderate Alzheimer's disease. Alzheimers Res Ther. 2019 Aug 7;11(1):68. doi: 10.1186/s13195-019-0520-1.
- Egan MF, Kost J, Tariot PN, Aisen PS, Cummings JL, Vellas B, Sur C, Mukai Y, Voss T, Furtek C, Mahoney E, Harper Mozley L, Vandenberghe R, Mo Y, Michelson D. Randomized Trial of Verubecestat for Mild-to-Moderate Alzheimer's Disease. N Engl J Med. 2018 May 3;378(18):1691-1703. doi: 10.1056/NEJMoa1706441.
- Kennedy ME, Stamford AW, Chen X, Cox K, Cumming JN, Dockendorf MF, Egan M, Ereshefsky L, Hodgson RA, Hyde LA, Jhee S, Kleijn HJ, Kuvelkar R, Li W, Mattson BA, Mei H, Palcza J, Scott JD, Tanen M, Troyer MD, Tseng JL, Stone JA, Parker EM, Forman MS. The BACE1 inhibitor verubecestat (MK-8931) reduces CNS beta-amyloid in animal models and in Alzheimer's disease patients. Sci Transl Med. 2016 Nov 2;8(363):363ra150. doi: 10.1126/scitranslmed.aad9704.
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Subject | Verubecestat | Small molecule | 12 mg | Oral |
| Subject | Verubecestat | Small molecule | 40 mg | Oral |