Yun-lin Branch, National Taiwan Univeristy Hospital, Taipei, Taiwan
Jo-Pai Chen , Wei-Chen Lu , Hsu Wu , Tsui-Mai Kao , Keng-Man Chiang , Hsing-wu Chen , Sung-Hsin Kuo
Background: ESCC is a health burden in Taiwan due to smoking and drinking habits. In R/M setting, the prognosis is worse. In 2021, KN590 study(pembrolizumab with chemotherapy in CPS≥10%), CM648 study(nivolumab with chemotherapy or nivolumab with ipilimumab in TPS≥1%), and ESCORt-1st study(camrelizumab with chemotherapy in TPS≥1%) have all been shown to get survival benefits compared with chemotherapy alone in front-line setting. Further immunotherapy combinations with targeted therapies and subsequent therapy options after anti-PD1 failure deserve more investigation. Methods: From early 2016 to late 2021, 26 advanced ESCC patients had ever received immunotherapy-containing regimens in Yun-lin Branch of National Taiwan University Hospital. We have reviewed basic characters, ICIs regimens, and treatment response of these patients. Results: 3 patients under progression during front-line KN590 got PR by subsequent afatinib(2) or lenvatinib(1) use. So, the overall response rate of advanced ESCC to immunotherapy-containing regimens was 59%(17/29) and disease control rate was 72%(21/29). Conclusions: Afatinib has multiple immuno-modulatory effects. AP or NA is an effective regimen in Taiwan, where double cancers, like HNSCC and ESCC, are popular due to smoking, drinking, and bêtel-nuts chewing. Following KN590 good efficacy was also seen in our institution and afatinib with anti-PD1 could be introduced in CT-unfit patients. In unresectable and/or oligometastatic ESCC, induction triple therapy may lead to conversion chemoradiation, even to final surgery. EGFR or VEGFR TKI with immunotherapy might also be a subsequent recue regimen after front-line anti-PD1 failure.
Tx line | 1st line (12 patients) 1 Hypo-Ca with ESCC with AP; 1 Buccal CA with ESCC with NA; 1 CT-unfit patient with NA 6 with KN590; 3 with triple therapy by cetuximab, anti-PD1, and CT *AP-afatinib and pembrolizumab *NA-afatinib and nivolumab | ≥2nd line (13 patients) 4 patients with 1st line PF; 4 patients with 1st line TPF; 2 cases with post-progression anti-PD1 & afatinib got PR after failure of KN590; 1 with post-progression anti-PD1 & lenvatinib got PR after failure of KN590; 2 patients with Nivo and Taxane or CPT-11 after failing cispatin-based CT | 2nd line nivolumab (4) | ||||||
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Overall benefits | PR: 58%(7/12); DCR: 67%(8/12) | PR: 69%(9/13); DCR: 85%(11/13) | As below | ||||||
Regimens | AP | NA | Triple | KN590 | AP | NA | LP | Nivo-CT | Nivo alone |
Partial response | 0 | 100% (2/2) | 67% (2/3) | 50% (3/6) | 80% (4/5) | 60% (3/5) | 100% (1/1) | 50% (1/2) | 25%(1/4) |
Disease control | 100% (1/1) | 100% (2/2) | 67% (2/3) | 50% (3/6) | 80% (4/5) | 80% (4/5) | 100% (1/1) | 100% (2/2) | 25%(1/4) |
Side effects | Grade II pneumo-nitis | Mild | Malaise, skin rash, leukopenia, hypo-thyrodism | Malaise & leukopenia | Gr. III pneumo-nitis & Gr. II hepatitis noted in the patient with PD | Mild | HTN & hypo-thyrodism | Nil | Nil |
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