Treatment with combinations using sotorasib at multiple dose levels and panitumumab led to improved progression-free survival vs standard of care in patients with chemorefractory metastatic colorectal cancer harboring KRAS G12C mutations.
The dark cloud of what the U.S. FDA called potential “systemic bias” rained on Amgen Inc.’s bid for full approval of Lumakras (sotorasib), a KRAS-G12C inhibitor that was granted accelerated approval in May 2021 for locally advanced or metastatic non-small-cell lung cancer after at least one systemic therapy.
In a 10-to-2 vote, the FDA’s Oncologic Drugs Advisory Committee voted that the data for progression-free survival per blinded independent central review from the phase 3 CodeBreaK 200 trial evaluating sotorasib vs docetaxel for the treatment of patients with pretreated, locally advanced or metastatic KRAS G12C–mutated non–small cell lung cancer cannot be reliably interpreted.
Sotorasib provided consistent benefit over docetaxel in the majority of key prespecified molecularly defined subsets of patients with pretreated KRAS G12C–mutated non–small cell lung cancer enrolled to the phase 3 CodeBreaK 200 trial.