Shanghai Henlius Biotech, Inc...announced...HANSIZHUANG (serplulimab injection), an innovative anti-PD-1 monoclonal antibody independently developed by the company, in combination with drugs containing fluorouracil and platinum for the first-line treatment of patients with PD-L1 positive unresectable locally advanced/recurrent or metastatic esophageal squamous cell carcinoma (ESCC), has been approved by the National Medical Products Administration (the "NMPA"), providing a new treatment option for patients with ESCC.