Evaluation of mixed response in tumor size and survival in patients with rare cancers treated with dual checkpoint inhibitor therapy (DART SWOG S1609)

Background <p>Mixed response, where different lesions within the same patient show discordant responses to treatment, remains poorly understood. To better understand the complex effects of mixed response on patient survival, we devised three different definitions of mixed response. This retrospective analysis provides the first evaluation of the association between mixed response and survival outcomes in patients with rare cancers treated…