Bristol Myers Squibb announced that Opdualag (nivolumab and relatlimab-rmbw), a new, first-in-class, fixed-dose combination of nivolumab and relatlimab, administered as a single intravenous infusion, was approved by the US Food and Drug Administration (FDA) for the treatment of adult and paediatric patients 12 years of age or older with unresectable or metastatic melanoma. The approval is based on the phase 2/3 RELATIVITY-047 trial, which compared Opdualag (n=355) to nivolumab alone (n=359). The trial met its primary endpoint, progression-free survival (PFS), and Opdualag more than doubled the median PFS when compared to nivolumab monotherapy, 10.1 months (95% Confidence Interval [CI]: 6.4 to 15.7) versus 4.6 months (95% CI: 3.4 to 5.6); (Hazard Ratio [HR] 0.75; 95% CI: 0.62 to 0.92, P=0.0055). The Opdualag safety profile was similar to that previously reported for nivolumab. No new safety events were identified with the combination when compared to nivolumab monotherapy. Grade 3/4 drug-related adverse events were 18.9% in the Opdualag arm compared to 9.7% in the nivolumab arm. Drug-related adverse events leading to discontinuation were 14.6% in the Opdualag arm compared to 6.7% in the nivolumab arm.
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