Alzheimer’s Research on the Cheap

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Jack H. Florin MD | Your Neurologist in Orange County.

The Alzheimer’s research landscape is littered with massive industry-sponsored phase 3 clinical trials undertaken without prior proof of concept, efficacy evidence or despite negative phase 2 studies. Examples include secretase inhibitors, amyloid-beta antibodies and “small molecules” such as methylene blue.

Add to this heap minocycline, an old, cheap, antibiotic (think acne). A recently completed phase 3 trial failed to show benefit. It can be faulted because it skipped phase 2 but there was preclinical evidence. Nevertheless, it previously failed in trials of MS, ALS, Huntington’s, and schizophrenia. It was, however, pragmatic — not industry-sponsored, with eligibility based on clinical features, not expensive biomarkers.

Ongoing is an expensive phase 3 trial of another repurposed drug, Rybelsus (semaglutide), widely used to treat diabetes (full disclosure — we are a site in the study). Many other drugs with evidence to support use in Alzheimer’s include anti-virals, anti-hypertensives, anti-epileptics, and psychotropic drugs.

Cost-efficient research is possible.

Adapted from the Editorial by Schneider in JAMA Neurology, February 2020.

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