Journal of Clinical OncologyDose Optimization of Sotorasib: Is the US Food and Drug Administration Sending a Message?

The FDA has required that Amgen compare its approved KRAS-targeted therapy sotorasib (Lumakras) 960-mg dose with a 240-mg dose as one of its accelerated approval post-marketing requirements, a paradigm-shifting event that signals new scrutiny around determining the labeled dose for targeted oncology drugs, which still follow outdated maximum tolerated dose (MTD) principles in cytotoxic agents.