Toripalimab,Celecoxib and Regorafenib in the Treatment of Refractory Advanced Colorectal Cancer

Summary

Research has found that patients with microsatellite instability (dMMR/MSI-H) type colorectal cancer can achieve long-term survival through immune checkpoint inhibitors (ICIs) treatment, but currently accounting for about 95% of MSS type mCRC, the benefits from immune checkpoint inhibitors are very limited. REGONIVO is a Phase Ib study to explore the efficacy and safety of regorafenib in combination with nivolumab in the treatment of gastric cancer and colorectal cancer with MSS. The study enrolled 50 patients with advanced disease, including 25 cases of gastric cancer, 25 cases of colorectal cancer, except for one case of colorectal cancer with MSI-H, and others were MSS type. The results of the study showed that patients with colorectal cancer had an objective response rate (ORR) of 36%.The ORR of liver matestasis vs. lung matestasis is 8.7% vs. 50%. In this study, pMMR /MSS type patients with refractory advanced colorectal cancer without liver metastasis were selected as the subjects. Regorafenib, Toripalimab and Celecoxib were used to evaluate the maximum tolerable dose, objective response rate (ORR), total survival time (OS), progression free survival time (PFS), disease control rate (DCR), response duration (DoR) and safety of the subjects.

Timeline

Start

2023-12-19

Primary completion

2025-09-20

Completion

2025-12-20

Publications

• Background Le DT, Durham JN, Smith KN, Wang H, Bartlett BR, Aulakh LK, Lu S, Kemberling H, Wilt C, Luber BS, Wong F, Azad NS, Rucki AA, Laheru D, Donehower R, Zaheer A, Fisher GA, Crocenzi TS, Lee JJ, Greten TF, Duffy AG, Ciombor KK, Eyring AD, Lam BH, Joe A, Kang SP, Holdhoff M, Danilova L, Cope L, Meyer C, Zhou S, Goldberg RM, Armstrong DK, Bever KM, Fader AN, Taube J, Housseau F, Spetzler D, Xiao N, Pardoll DM, Papadopoulos N, Kinzler KW, Eshleman JR, Vogelstein B, Anders RA, Diaz LA Jr. Mismatch repair deficiency predicts response of solid tumors to PD-1 blockade. Science. 2017 Jul 28;357(6349):409-413. doi: 10.1126/science.aan6733. Epub 2017 Jun 8.
• Background Akin Telli T, Bregni G, Vanhooren M, Saude Conde R, Hendlisz A, Sclafani F. Regorafenib in combination with immune checkpoint inhibitors for mismatch repair proficient (pMMR)/microsatellite stable (MSS) colorectal cancer. Cancer Treat Rev. 2022 Nov;110:102460. doi: 10.1016/j.ctrv.2022.102460. Epub 2022 Aug 27.
• Background Andre T, Shiu KK, Kim TW, Jensen BV, Jensen LH, Punt C, Smith D, Garcia-Carbonero R, Benavides M, Gibbs P, de la Fouchardiere C, Rivera F, Elez E, Bendell J, Le DT, Yoshino T, Van Cutsem E, Yang P, Farooqui MZH, Marinello P, Diaz LA Jr; KEYNOTE-177 Investigators. Pembrolizumab in Microsatellite-Instability-High Advanced Colorectal Cancer. N Engl J Med. 2020 Dec 3;383(23):2207-2218. doi: 10.1056/NEJMoa2017699.
• Background Fukuoka S, Hara H, Takahashi N, Kojima T, Kawazoe A, Asayama M, Yoshii T, Kotani D, Tamura H, Mikamoto Y, Hirano N, Wakabayashi M, Nomura S, Sato A, Kuwata T, Togashi Y, Nishikawa H, Shitara K. Regorafenib Plus Nivolumab in Patients With Advanced Gastric or Colorectal Cancer: An Open-Label, Dose-Escalation, and Dose-Expansion Phase Ib Trial (REGONIVO, EPOC1603). J Clin Oncol. 2020 Jun 20;38(18):2053-2061. doi: 10.1200/JCO.19.03296. Epub 2020 Apr 28.
• Background Wang F, He MM, Yao YC, Zhao X, Wang ZQ, Jin Y, Luo HY, Li JB, Wang FH, Qiu MZ, Lv ZD, Wang DS, Li YH, Zhang DS, Xu RH. Regorafenib plus toripalimab in patients with metastatic colorectal cancer: a phase Ib/II clinical trial and gut microbiome analysis. Cell Rep Med. 2021 Aug 27;2(9):100383. doi: 10.1016/j.xcrm.2021.100383. eCollection 2021 Sep 21.

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