This is a Safety and Tolerability Study Evaluating a New Treatment for Subjects With Mild to Moderate Alzheimer's Disease

This is a Phase 2, open-label, multicenter, 28 week extension study to evaluate the long-term safety and tolerability of ABT-126 in subjects who complete dosing through Week 24 of Study M10-985. Up to 410 subjects may participate at approximately 30 sites in several countries.