AUTHOR=Mei Xinkuan , Zhao Yanyan , Zhang Yiruo , Liao Jinhua , Jiang Chen , Qian Hesheng , Du Yingying TITLE=Efficacy and Biomarker Exploration of Sintilimab Combined With Chemotherapy in the Treatment of Advanced Penile Squamous Cell Carcinoma—A Report of Two Cases JOURNAL=Frontiers in Oncology VOLUME=Volume 12 - 2022 YEAR=2022 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2022.823459 DOI=10.3389/fonc.2022.823459 ISSN=2234-943X ABSTRACT=Penile squamous cell carcinoma is a rare malignant tumor of the male reproductive system. We report two cases of advanced penile squamous cell carcinoma with persistent PR/CR after sintilimab combined with chemotherapy and analyzed the relevant tumor biomarkers.