Multiple combinational strategies of immunotherapy for esophageal squamous cell carcinoma: One institutional experience in Taiwan since 2016.

Authors

null

Jo-Pai Chen

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

Organizations

Yun-lin Branch, National Taiwan Univeristy Hospital, Taipei, Taiwan, National Taiwan Univeristy Hospital, Yun-lin Branch, Yun-Lin, Taiwan, National Taiwan University Hospital Biomedical Park Hospital, Zhubei City, Taiwan, National Taiwan University Hospital, Yun-lin Branch, Yun-Lin, Gabon, National Taiwan University Hospital, Taipei, Taiwan, National Taiwan University Medical Library, Taipei, Taiwan, Department of Oncology, National Taiwan University Hospital and National Taiwan University Cancer Center, Taipei, Taiwan

Research Funding

No funding received

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)

Overall
benefits
PR: 58%(7/12);

DCR: 67%(8/12)
PR: 69%(9/13);

DCR: 85%(11/13)
As below
RegimensAP
NA
Triple
KN590
AP
NA
LP
Nivo-CT
Nivo

alone
Partial response0
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 effectsGrade II pneumo-nitis
MildMalaise,

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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Abstract Details

Meeting

2022 ASCO Gastrointestinal Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session A: Cancers of the Esophagus and Stomach and Other GI Cancers

Track

Esophageal and Gastric Cancer,Other GI Cancer

Sub Track

Therapeutics

DOI

10.1200/JCO.2022.40.4_suppl.328

Abstract #

328

Poster Bd #

Online Only

Abstract Disclosures