Toripalimab Plus FLOT in Locally Advanced Gastric Cancer

Toripalimab Combined With FLOT Regimen in Locally Advanced Gastric cancer-a Prospective, Open, Multi-center, Phase Ⅱ Clinical Study

Neoadjuvant chemoimmunotherapy for locally advanced gastric and gastroesophageal junction (G/GEJ) cancer is currently under investigation. Most clinical studies have simply combined chemotherapy with anti-PD-1 therapy without considering the impact of chemotherapy drugs on activated immune cells. We designed this study to explore two different treatment regimens for neoadjuvant chemotherapy in patients with locally advanced G/GEJ cancer. One group received FLOT plus toripalimab on Day 1 of each cycle, every 2 weeks for 4 cycles, followed by surgery; the other group received FLOT plus toripalimab on Day 3 of each cycle, every 3 weeks for 3 cycles, followed by surgery. A total of 69 subjects were enrolled. Preliminary statistical analysis conducted one year after the last subject was enrolled revealed no statistically significant differences in pCR and MPR between the two regimens. The median DFS for both groups has not been reached, and there is no statistically significant difference in DFS between the two groups at present. Further subgroup analysis indicated that among subjects with PD-L1 CPS ≥1, the triweekly group achieved a rate of 42.1%, compared to 29.4% in the biweekly group, with no statistically significant difference between the two groups. However, the incidence of bone marrow suppression was lower in the triweekly group than in the biweekly group. Based on the preliminary findings, we plan to conduct an expanded study and transition to a multicenter clinical trial. This study aims to further validate the efficacy of the triweekly chemoimmunotherapy in patients with PD-L1 CPS ≥1 locally advanced G/GEJ cancer.

Study Overview

• Status: Recruiting
• Conditions: Chemotherapy; Immune Checkpoint Inhibitor; Locally Advanced Gastric Carcinoma
• Intervention / Treatment: Drug: FLOT combined with toripalimab

Detailed Description

Eligible patients received FLOT combined with toripalimab on Day 3 every 3 weeks, for a total of 3 cycles, followed by surgical treatment. Postoperative adjuvant therapy was determined based on pathological results: if a pathological complete response (pCR) was achieved, patients received 2 additional cycles of the neoadjuvant regimen; if pCR was not achieved, patients were given 4 cycles of SOX combined with toripalimab postoperatively.

• Study Type: Interventional
• Enrollment (Estimated): 60
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Quanli Gao, M.D; Phone Number: +8637165587483; Email: gaoquanli2015@126.com
• Study Contact Backup: Name: Lingdi Zhao, M.D; Phone Number: +8637165587483; Email: lingdizhao@126.com

Study Locations

• China
  • Henan
    • Zhengzhou, Henan, China, 450008
      • Recruiting
      • Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital
      • Contact: Lingdi Zhao, M.D; Phone Number: +86-371-65587483; Email: lingdizhao@126.com
      • Contact: Quanli Gao, M.D; Phone Number: +86-371-65587795; Email: gaoquanli2015@126.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 70 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• 70 ≥ Age ≥ 18 years regardless of gender
• Gastric adenocarcinoma confirmed by pathology
• no distant metastasis and resectable or potentially resectable evaluated by general surgery experts
• ECOG PS 0-1
• clinical stage T3/4 or N+ by AJCC 8.0
• PD-L1 CPS ≥1 (IHC 22C3 pharm Dx assay (Dako))
• expected lifespan over 3 months
• Adequate organ function: 1) without growth factor and blood component support in the first 2 weeks of enrollment; 2) Cardiac function: no heart disease or coronary heart disease, grade 1-2; 3) liver function: TBIL ≤ 2ULN, AST ≤ 2.5 ULN, alt ≤ 2.5 ULNX 4 Renal function: cr ≤ 1.25ULN, liver function: TBIL ≤ 2ULN, TBIL ≤ 2.5ULN, alt ≤ 2.5ULN, 4)renal function: cr ≤ 1.25ULN.
• blood pressure normal or controlled within the normal range by antihypertensive drugs
• Diabetic patients were treated with hypoglycemic drugs to control fasting blood glucose ≤ 8mmol/L
• Patients with positive hepatitis B surface antigen need to be tested for quantitative detection of hepatitis B DNA virus. HBV DNA should be less than the upper limit of the normal test value for patients with HBV infection.
• no other serious diseases conflicting with this study
• No history of other malignant tumors
• Women of childbearing age must be tested negative for blood pregnancy test within 7 days before enrollment, and subjects of childbearing age must use appropriate contraceptive measures during the trial and within 6 months after the trial
• agreement to participate in this study and signed the informed consent form

Exclusion Criteria:

• Pregnant or lactating women
• Suffered from severe infectious diseases within 4 weeks before entering the group
• Bronchial asthma requires intermittent use of bronchodilators or medical intervention
• Due to the use of immunosuppressants before coexisting diseases and the dosage of immunosuppressants ≥ 10mg/, the oral dose of prednisone lasted for more than 2 weeks
• Clinically obvious cardio-cerebrovascular diseases, including, but not limited to, severe acute myocardial infarction, instability or severe angina pectoris, coronary artery bypass surgery, congestive heart failure, ventricular arrhythmias requiring medical intervention, left ventricular ejection fraction < 50%, stroke within 6 months
• Allergic to any experimental drug and its excipients, or have a history of severe allergy, or are contraindications to experimental drugs
• Severe mental disorders
• Abnormal coagulation function (PT > 16s, APTT > 53s, TT > 21s Fib < 1.5g/L), bleeding tendency or undergoing thrombolysis or anticoagulation therapy
• Past or present pulmonary fibrosis, interstitial pneumonia, pneumoconiosis, radiation pneumonia, severe impairment of lung function, etc.
• Unable to swallow research drugs, chronic diarrhea (including but not limited to irritable bowel syndrome, Crohn's disease, ulcerative colitis) and intestinal obstruction affect drug use and absorption
• Have a history of immunodeficiency, including positive for HIV, or suffer from other acquired, congenital immunodeficiency diseases, or have a history of organ transplant
• Other researchers evaluate those who do not meet the criteria for admission

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: experimental group; patients received FLOT regimen on day 1 and toripalimab on day 3.

Drug: FLOT combined with toripalimab; Patients received FLOT combined with toripalimab on Day 3 every 3 weeks, for a total of 3 cycles, followed by surgical treatment. Postoperative adjuvant therapy was determined based on pathological results: if a pathological complete response (pCR) was achieved, patients received 2 additional cycles of the neoadjuvant regimen; if pCR was not achieved, patients were given 4 cycles of SOX combined with toripalimab postoperatively.; Other Names: FLOT plus toripalimab

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
pathological complete response rate	the proportion of patients with no tumor cells in the postoperative specimens	6 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
rate of adverse events	rate of adverse events	3 months
disease-free survival	the rate of patients who keep from disease at three years	3 years

Collaborators and Investigators

• Sponsor: Henan Cancer Hospital
• Investigators: Principal Investigator: Quanli Gao, M.D, Department of Immunotherapy, Henan Provincial Cancer Hospital

Publications and helpful links

General Publications

• Loibl S, Untch M, Burchardi N, Huober J, Sinn BV, Blohmer JU, Grischke EM, Furlanetto J, Tesch H, Hanusch C, Engels K, Rezai M, Jackisch C, Schmitt WD, von Minckwitz G, Thomalla J, Kummel S, Rautenberg B, Fasching PA, Weber K, Rhiem K, Denkert C, Schneeweiss A. A randomised phase II study investigating durvalumab in addition to an anthracycline taxane-based neoadjuvant therapy in early triple-negative breast cancer: clinical results and biomarker analysis of GeparNuevo study. Ann Oncol. 2019 Aug 1;30(8):1279-1288. doi: 10.1093/annonc/mdz158. Erratum In: Ann Oncol. 2022 Jul;33(7):743-744.
• Voorwerk L, Slagter M, Horlings HM, Sikorska K, van de Vijver KK, de Maaker M, Nederlof I, Kluin RJC, Warren S, Ong S, Wiersma TG, Russell NS, Lalezari F, Schouten PC, Bakker NAM, Ketelaars SLC, Peters D, Lange CAH, van Werkhoven E, van Tinteren H, Mandjes IAM, Kemper I, Onderwater S, Chalabi M, Wilgenhof S, Haanen JBAG, Salgado R, de Visser KE, Sonke GS, Wessels LFA, Linn SC, Schumacher TN, Blank CU, Kok M. Immune induction strategies in metastatic triple-negative breast cancer to enhance the sensitivity to PD-1 blockade: the TONIC trial. Nat Med. 2019 Jun;25(6):920-928. doi: 10.1038/s41591-019-0432-4. Epub 2019 May 13. Erratum In: Nat Med. 2019 Jun 17;:
• He X, Du Y, Wang Z, Wang X, Duan J, Wan R, Xu J, Zhang P, Wang D, Tian Y, Han J, Fei K, Bai H, Tian J, Wang J. Upfront dose-reduced chemotherapy synergizes with immunotherapy to optimize chemoimmunotherapy in squamous cell lung carcinoma. J Immunother Cancer. 2020 Oct;8(2):e000807. doi: 10.1136/jitc-2020-000807.
• Shitara K, Rha SY, Wyrwicz LS, Oshima T, Karaseva N, Osipov M, Yasui H, Yabusaki H, Afanasyev S, Park YK, Al-Batran SE, Yoshikawa T, Yanez P, Dib Bartolomeo M, Lonardi S, Tabernero J, Van Cutsem E, Janjigian YY, Oh DY, Xu J, Fang X, Shih CS, Bhagia P, Bang YJ; KEYNOTE-585 investigators. Neoadjuvant and adjuvant pembrolizumab plus chemotherapy in locally advanced gastric or gastro-oesophageal cancer (KEYNOTE-585): an interim analysis of the multicentre, double-blind, randomised phase 3 study. Lancet Oncol. 2024 Feb;25(2):212-224. doi: 10.1016/S1470-2045(23)00541-7. Epub 2023 Dec 19.

Study record dates

Study Major Dates

• Study Start (Actual): June 25, 2021
• Primary Completion (Estimated): December 31, 2025
• Study Completion (Estimated): December 31, 2028

Study Registration Dates

• First Submitted: May 10, 2021
• First Submitted That Met QC Criteria: May 12, 2021
• First Posted (Actual): May 18, 2021

Study Record Updates

• Last Update Posted (Actual): June 6, 2024
• Last Update Submitted That Met QC Criteria: June 5, 2024
• Last Verified: June 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Digestive System Diseases; Neoplasms; Neoplasms by Site; Gastrointestinal Neoplasms; Digestive System Neoplasms; Gastrointestinal Diseases; Stomach Diseases; Stomach Neoplasms
• Other Study ID Numbers: HenanCH immunotherapy006

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: Demographic characteristics, adverse reactions, postoperative pathology
• IPD Sharing Time Frame: every 6 months
• IPD Sharing Access Criteria: under suitable requirement
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP; CSR

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No