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Alzheimer's disease

An expert panel convened by the Alzheimer’s Drug Discovery Foundation (ADDF) and The Association for Frontotemporal Degeneration (AFTD) provides guidance on best practices for the design of early drug trials for Alzheimer’s disease, frontotemporal degeneration (FTD), generic toradol nz without prescription and other neurodegenerative dementias. Their guidance was published in the May 18, 2021 issue of Neurology, the medical journal of the American Academy of Neurology.

These efficiencies in clinical trials can help to achieve proof of concept more rapidly and at lower costs. The estimated cost of developing an Alzheimer’s drug is eight times more than a cancer drug and takes nearly twice as long to develop. The panel, which comprised clinicians, researchers, and statisticians from academia, biotech, and pharmaceutical companies, as well as ADDF and AFTD scientific staff, focused on early phase 1 and 2 exploratory trials, which assess a drug’s safety and pharmacologic effects on patients. Exploratory studies with optimized study designs can terminate programs not likely to succeed and efficiently move promising programs through the clinical trial process. Later phase 2 and phase 3 trials measure clinical outcomes such as memory and ability to perform daily functions.

“The majority of clinical development costs come from later stage phase 2b and phase 3 studies, which require long treatment periods and a large number of patients to detect meaningful changes in cognitive, behavioral, and functional endpoints,” said Howard Fillit, M.D., ADDF founding executive director and chief science officer. “Results from exploratory phase 2a trials are the critical inflection point when researchers decide which drugs to move into these larger and more expensive trials, so clearly these phase 2a trials need to be as rigorous and well-designed as possible.”

Panel makes four key recommendations for exploratory trial study designs

By adopting best practices in designing exploratory trials, researchers and companies can be more confident in using their results to make the all-important go/no-go decisions about advancing drugs to larger later-stage trials. The four key panel recommendations are to:

“These four recommendations can lead to more efficient trials, with substantial financial savings, as well as more strategic and effective engagement of patients,” said AFTD CEO Susan L-J Dickinson. “The latter is a key concern for a rare disease like FTD where the low number of patients pushes the need for strategic study design, with patients enrolled only in studies that will provide a clear and accurate readout of therapeutic efficacy.”

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