We evaluated the overall survival (OS) and progression-free survival (PFS). OS was measured as the period from the initiation of immunotherapy to death. PFS was measured as the period from the first administration of immunotherapy to documented disease progression or death from any cause. Treatment response was assessed using the Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1. The censored date was Aug 17, 2020.
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