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논문 기본 정보

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학술저널
저자정보
박세훈 (삼성서울병원) 이유리미 (삼성서울병원) 이지윤 (삼성서울병원) 민양원 (성균관대학교) 김홍관 (성균관대학교) 최준영 (삼성서울병원) 정현애 (삼성서울병원) 최용수 (성균관대학교) 최윤라 (삼성서울병원) 심영목 (성균관대학교) 선종무 (삼성서울병원)
저널정보
대한암학회 Cancer Research and Treatment Cancer Research and Treatment Vol.56 No.2
발행연도
2024.4
수록면
567 - 579 (13page)
DOI
10.4143/crt.2023.897

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Purpose Programmed death-1/programmed death-ligand 1 (PD-L1) inhibitors have shown efficacy in metastatic esophageal squamous cell carcinoma (ESCC) therapy. However, data is still limited regarding neoadjuvant immunotherapy for operable ESCC. Materials and Methods Patients with clinical stage T2 or T3 and N0 ESCC received three cycles of nivolumab therapy every two weeks before surgical resection. The primary endpoint is major pathologic responses (MPR) rate (≤ 10% of residual viable tumor [RVT]). Results Total 20 patients completed the planned nivolumab therapy. Among them, 17 patients underwent surgery as protocol, showing MPR in two patients (MPR rate, 11.8%), including one pathologic complete response, on conventional pathologic response evaluation. Pathologic response was re-evaluated using the immune-related pathologic response criteria based on immune-related RVT (irRVT). Three patients were classified as immunologic major pathologic response (iMPR; ≤ 10% irRVT, iMPR rate: 17.6%), five as pathologic partial response (> 10% and < 90% irRVT), and nine as pathologic nonresponse (≥ 90% irRVT). The combined positive score (CPS) for PD-L1 in the baseline samples was predictable for iMPR, with the probability as 37.5% in CPS ≥ 10 (3/8) and 0% in CPS < 10 (0/9). Conclusion Although the efficacy of neoadjuvant nivolumab therapy was modest in unselected ESCC patients, further researches on neoadjuvant immunotherapy are necessary in patients with PD-L1 expressed ESCC.

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