Identifying High-Potential Drugs to Repurpose for Alzheimer Disease: Feixiong Cheng, PhD

At the 2021 Alzheimer’s Association International Conference (AAIC), July 26-30, research presented by Feixiong Cheng, PhD, identified sildenafil (Revatio) as a promising drug candidate for the prevention and treatment of Alzheimer disease (AD). Using a developed endophenotype molecular network-based methodology, the investigators conducted 5 comparison analyses, which included other drugs such as diltiazem (Cardizem; Valeant), losartan (Cozaar; Merck), glimepiride (Amaryl; Hoechst) and metformin (Glucophage; Merck).

All told, the data showed a statistically significantly 69% reduced risk of AD for sildenafil users compared to matched non-sildenafil usage. In recent years, the AD research field has had an increase in the number of repurposed agents within the clinical pipeline. While there are several promising FDA-approved drugs in circulation, choosing the correct option to test in a clinical trial setting requires careful examination, according to Cheng.

In an interview with NeurologyLive, Cheng discussed what goes into deciding what drugs may be good candidates for AD, and which mechanistic actions researchers should key in on. He also stressed that being able to validate a given drug’s efficacy is crucial in understanding whether its right to spend time and resources on it.