FDA Promotes Dose Optimization Innovation: Report
Six FDA researchers say alternative trial designs and analytical methods with an iterative process that leverages nonclinical data and clinical observations beyond short-term safety data are needed to identify optimized dosages for newer oncology drugs, given that targeted therapies and immunotherapies often do not demonstrate traditional dose-limiting toxicities and meaningful clinical activity may be observed at dosages lower than the maximum tolerated dose.
Writing in CPT: Pharmacometrics and Systems Pharmacology, the researchers say FDA is increasingly interested in implementing model-informed clinical trial designs.
“Although these approaches are relatively new compared with traditional toxicity-driven dose-finding trials, they may allow for more informative dose selection in situations where non-clinical data, same-in-class drug information, or emerging clinical data can be maximally leveraged,” they write. They also say the agency is interested in the adoption of seamless, adaptive designs to address key questions around optimized dosage, safety, and efficacy determination.
The researchers say FDA scientists work collaboratively to provide regulatory advice on specific regulatory submissions, drug development programs, drug development tools, and novel approaches in a variety of forums.