Targacept Phase 2b Clinical Trial in Alzheimer’s Disease Does Not Show Superiority of TC-1734 Over Donepezil

WINSTON-SALEM, N.C. -- Targacept, Inc. (NASDAQ: TRGT), a clinical-stage biopharmaceutical company developing novel NNR Therapeutics™, today announced top-line results from a Phase 2b monotherapy clinical trial of TC-1734 as a treatment for mild to moderate Alzheimer’s disease. In the trial, TC-1734 did not meet the objective of showing superiority to donepezil, the marketed medication most often prescribed for Alzheimer’s disease, after 52 weeks of treatment. The trial did not include a placebo arm and was not designed to determine whether TC-1734 is equivalent to donepezil. The co-primary endpoints for the study were measures of cognitive function and global function. Consistent with previous clinical results, TC-1734 exhibited a benign safety and tolerability profile.


“We are disappointed for Alzheimer’s disease patients and their families. We designed a rigorous study to provide a definitive answer on whether TC-1734 could be a better treatment option than the current standard of care in what has been a very difficult disease area for the development of novel therapeutics. Based on these results, we do not intend to invest in further development of TC-1734,” said Dr. Stephen A. Hill, Targacept’s President and Chief Executive Officer. “I want to thank the investigators, patients and my colleagues at Targacept for their efforts.”

Analyses of the full dataset from the trial are ongoing and Targacept plans to present and publish more detailed results over the coming months.

About the Trial

The Phase 2b trial was a double blind, positive comparator, randomized, parallel group trial evaluating TC-1734 head-to-head against donepezil, the marketed medication most often prescribed for Alzheimer’s disease. The trial randomized 293 patients, and was conducted at 61 sites in Eastern Europe and 3 sites in the United States. For U.S. regulatory purposes, the Alzheimer’s Disease Assessment Scale-Cognitive subscale 11-item assessment and the Clinician Interview-Based Impression of Change Plus Caregiver Input (CIBIC-(+)) were co-primary endpoints, with the Alzheimer’s Disease Cooperative Study-Activities of Daily Living Inventory replacing CIBIC-(+) as a co-primary endpoint for European regulatory purposes. The study included a 3-week screening period, followed by a 12-month treatment period during which patients received a fixed dose of TC-1734 (30mg) or donepezil once daily.

About Targacept
Targacept is developing an advanced clinical pipeline of NNR Therapeutics™ to treat patients suffering from serious nervous system and gastrointestinal/genitourinary diseases and disorders. Many diseases arise from abnormalities in signaling within and between the brain and other organ systems such as the bladder and the GI tract. Targacept’s NNR Therapeutics have the potential to normalize these signaling pathways to provide significant medical benefit. Targacept is dedicated to building health and restoring independence for patients. For more information, please visit www.targacept.com.

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