One of the standard treatments of resectable esophageal squamous cell carcinoma (ESCC) is neoadjuvant chemotherapy followed by surgery. Nivolumab showed efficacy for metastatic ESCC. However, the safety and efficacy of neoadjuvant nivolumab with chemotherapy for ESCC is unknown. Therefore, we will conduct FRONTiER to evaluate the safety and efficacy of nivolumab adding to neoadjuvant chemotherapy. FRONTiER comprises four experimental cohorts: (A) including nivolumab plus 5-FU+CDDP (cisplatin and 5-fluorouracil [CF]); (B) including one prior administration of nivolumab and the cohort A regimen; (C) including nivolumab plus docetaxel+ CF; (D) including one prior administration of nivolumab and the cohort C regimen; an expanded cohort. The primary end point is the incidence of dose-limiting toxicities from the initial dose to the 30th postoperative day. Clinical Trial Identifier: NCT0391444.
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