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Durvalumab Improves Survival in Stage III NSCLC

Jason M. Broderick @jasoncology
Published: Friday, May 25, 2018

Sean Bohen, MD, PhD
Sean Bohen, MD, PhD
Durvalumab (Imfinzi) significantly improved overall survival (OS) versus placebo when used as a sequential treatment in patients with locally-advanced, unresectable non–small cell lung cancer (NSCLC) who had not progressed following standard chemoradiotherapy, according to updated findings from the phase III PACIFIC trial.

<.001). Of the patients who had a response to durvalumab, 72.8% had an ongoing response at both 12 and 18 months as compared with 56.1% and 46.8%, respectively, in the placebo arm.

Just 16.5% of patients in the durvalumab group experienced disease progression compared with 27.7% of the placebo group (P <.001).

Nearly all patients in both groups, 96.8% for durvalumab and 94.9% for placebo, experienced adverse events (AEs) of any cause and grade. Grade 3/4 AEs were slightly more common with durvalumab (29.9% vs 26.1%). Pneumonia was the most common grade 3/4 AE, and was observed in 4.4% of patients in the durvalumab group and 3.8% of patients in the placebo group.

AEs caused discontinuations in 15.4% of patients in the durvalumab group and 9.8% of patients in the placebo group. About 29% of patients in the durvalumab group experienced serious AEs compared with 22.6% of the placebo arm.

The most frequent AEs leading to discontinuation were pneumonitis or radiation pneumonitis and pneumonia in both groups. One-third of patients assigned to durvalumab experienced any-grade pneumonitis or radiation pneumonitis compared with 24.8% in the placebo group. Grade 3/4 pneumonitis or radiation pneumonitis occurred in 3.4% of the durvalumab group and 2.6% of the placebo group. Deaths due to AEs occurred in 4.4% of patients in the durvalumab group and 5.6% of patients in the placebo group.
Antonia SJ, Villegas A, Daniel D, et al. Durvalumab after chemoradiotherapy in stage III non–small-cell lung cancer. N Engl J Med. 2017;377(20):1919-1929 doi: 10.1056/NEJMoa1709937.

 



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