Outcomes for assessment of symptomatic and stabilization/disease modifying drugs

Abstract

The safety and efficacy of current symptomatic drugs for AD was established using parallel groups taking different doses of active drugs vs placebo over three to twelve months, whereas drugs with potential stabilizing/disease modifying effects are being tested by adding new compounds or placebo to standard symptomatic drugs over 12 to 18 months. Delaying progression to disease milestones may offer additional validity to these studies. It is unclear if biological and neuroimaging markers will add to the clinical evidence.