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  • Title: Neoadjuvant toripalimab plus platinum-paclitaxel chemotherapy in stage II-III non-small cell lung cancer: a single-center, single-arm, phase I study in China.
    Author: Hou H, Wang Y, Sun D, Zhu J, Jiang M, Zhang X, Zhou N, Zhang C, Li T, Zhang X.
    Journal: Invest New Drugs; 2023 Feb; 41(1):86-92. PubMed ID: 36508040.
    Abstract:
    BACKGROUND: Neoadjuvant and adjuvant immune checkpoint inhibitor treatments for non-small cell lung cancer (NSCLC) patients with resectable disease have presented promising results. This is a phase I study to evaluate the safety and efficacy of neoadjuvant toripalimab in combination with chemotherapy for NSCLC. METHODS: Treatment-naive patients with resectable NSCLC (stage II-IIIB) received two to four cycles of toripalimab (240 mg, intravenously, q3w) combined with platinum-paclitaxel chemotherapy. Surgical operation was performed approximately 4 weeks after the last cycle. The primary end point was safety. The efficacy endpoints included radiographic and pathological response rates, expression of programmed death ligand 1 (PD-L1) and molecular targets. RESULTS: A total of 11 patients were enrolled, consisting of 2 patients (18%) with adenocarcinoma and 9 patients (82%) with squamous cell carcinoma. All patients received two to four cycles of toripalimab plus chemotherapy and underwent radical resection. Regarding safety, 5 of 11 patients (45%) had neoadjuvant treatment-related adverse events, and 1 patient (9%) experienced grade 3 or worse treatment-related adverse events. Radiographic partial response was achieved in 10 patients, with an objective response rate of 91%. Among 11 patients, 6 (55%) achieved pathological complete response, including 1 PD-L1-negative patient. CONCLUSION: Neoadjuvant toripalimab plus platinum-paclitaxel chemotherapy was tolerable and induced a pathological complete response in 55% of resectable NSCLC patients.
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