Qingjun Guo

Association between PD-1/PD-L1 Expression and Clinicopathological Parameters as well as Prognosis in Neuroendocrine Neoplasms of the Digestive System: A Systematic Review and Meta-Analysis

Abstract Neuroendocrine neoplasms (NENs) are a highly heterogeneous group of tumors originating from the neuroendocrine system, predominantly occurring in the gastrointestinal tract and lungs. This meta-analysis aimed to clarify the association of programmed death 1 (PD-1)/progra...