While the trial’s results indicated that patients treated with ipilimumab plus dacarbazine had a significantly longer survival than those treated with dacarbazine plus placebo (HR = −0.33, 95% CI −0.53 to −0.14), the survival benefit did not reach statistical significance in a subgroup analysis of patients aged ≥ 65 years (HR = −0.09, 95% CI −0.44 to −0.25).
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Immune Checkpoint Inhibitors in the Treatment of Advanced Melanoma in Older Patients: An Overview of Published Data.
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In the CheckMate 238 trial, the efficacy of nivolumab was statistically significant for patients < 65 years (HR = 0.72, 95% CI 0.58–0.89), while in the older group of patients (25.8% of all included patients with age ≥ 65 years), the efficacy was not clearly significant (HR = 0.72, 95% CI 0.51–1.00).