Sugemalimab plus chemotherapy improved progression-free survival and overall survival in advanced ESCC patients

A recent study demonstrated that the utilization of sugemalimab alongside chemotherapy significantly improved progression-free survival and overall survival in treatment-naïve individuals with advanced esophageal squamous cell carcinoma (ESCC). This study’s findings were published in the journal, Nature medicine.

A total of 540 adults, ranging in age from 18 to 75 years, who were diagnosed with locally advanced, unresectable, recurrent or metastatic ESCC and had not undergone any previous systemic treatment, were enrolled in this multicenter, double-blinded, randomized, phase 3 trial. The patients were randomly assigned in a 2:1 ratio to receive either sugemalimab, an anti-PD-L1 antibody at a dose of 1,200 mg or placebo every 3 weeks for a maximum period of 24 months. Additionally, all the randomized patients underwent chemotherapy consisting of cisplatin (80 mg m^-2  on day 1) and 5-fluorouracil (800 mg m^-2 day^-1 on days 1-4) every 3 weeks for a maximum of six cycles. The study assessed both progression-free survival and overall survival outcomes.

With a median follow-up of 15.2 months, the extension of progression-free survival showed statistical significance when comparing sugemalimab plus chemotherapy to placebo plus chemotherapy (median 6.2 months vs 5.4 months). Additionally, overall survival was better with sugemalimab plus chemotherapy when compared to placebo plus chemotherapy (median 15.3 months vs 11.5 months). There was a notably higher objective response rate (60.1% vs 45.2%) observed with sugemalimab plus chemotherapy compared to placebo plus chemotherapy.

Thus, it can be concluded that the combination of sugemalimab and chemotherapy led to a notable extension in both progression-free survival and overall survival among treatment-naïve individuals with advanced ESCC.