Standard Systemic Therapy Combined With High/Low-dose Radiotherapy Plus Toripalimab for Metastatic Colorectal Cancer

A Prospective, Two-cohort Phase II Trial of Standard Systemic Therapy in Combination With High/Low-dose Radiotherapy Plus Toripalimab for Metastatic Colorectal Cancer

TORCH-M is a prospective, single-arm, two-cohort, investigator-initiated phase II trial to investigate the efficacy and safety of standard systemic therapy in combination with high/low-dose radiotherapy plus toripalimab in paitents with microsatellite stable metastatic colorectal cancer (MSS mCRC). Eligible patients will be assigned to two cohorts according to previous treatment: a first-line cohort A and a second-line cohort B. Patients in both arms will first receive one cycle of standard systemic therapy and toripalimab, followed by high/low-dose radiotherapy, and then continue with standard systemic therapy and toripalimab.The survival benefits, response rates, and adverse effects will be analyzed.

Study Overview

• Status: Recruiting
• Conditions: Microsatellite Stable Metastatic Colorectal Cancer
• Intervention / Treatment: Drug: standard systemic therapy combined with high/low-dose radiotherapy plus toripalimab

Detailed Description

First-line standard systemic therapies in cohort A include: FOLFOX/XELOX+ bevacizumab, FOLFOX/XELOX+cetuximab (KRAS/NRAS/BRAF WT and left-sided tumors only), FOLFIRINOX+ bevacizumab.

Second-line standard systemic therapies in cohort B include: FOLFOX/XELOX+ bevacizumab, FOLFOX/XELOX+cetuximab (KRAS/NRAS/BRAF WT), FOLFIRI/irinotecan+raltitrexed/irinotecan/+bevacizumab, FOLFIRI/irinotecan+raltitrexed/irinotecan/+cetuximab (KRAS/NRAS/BRAF WT), based on the previous first-line chemotherapy and adverse events.

Toripalimab will be delivered at 240 mg q3w. Radiotherapy regimes include 4-8 fractions of 4-12Gy via SABR or hypofractionated radiotherapy (HFRT) and 5 fractions of 0.5-2Gy via LDRT.

• Study Type: Interventional
• Enrollment (Estimated): 96
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Zhen Zhang, MD PhD; Phone Number: 18801735029; Email: zhen_zhang@fudan.edu.cn

Study Locations

• China
  • Shanghai
    • Shanghai, Shanghai, China, 200030
      • Recruiting
      • Fudan University Shanghai Cancer Center
      • Contact: Zhang Zhen, MD PhD; Phone Number: 18801735029; Email: zhen_zhang@fudan.edu.cn

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

Age between18 and 75 years old.

An Eastern Cooperative Oncology Group (ECOG) performance status ≤1.

Histopathological confirmed MSS/pMMR adenocarcinoma of the colon or rectum.

At least one evaluable metastatic lesion for radiotherapy and evaluation according to RECIST 1.1.

Treatment naive (first-line cohort) and progressed on after first-line therapy or stopped first-line therapy due to unacceptable toxic effects (second-line cohort).

Prior radiotherapy completed at least 4 weeks before enrollment.

Adequate bone-marrow, hepatic, and renal function: neutrophils ≥ 1.5 × 10^9/L, Hb ≥ 90 g/L, PLT ≥ 100 × 10^9/L, ALT/ AST≤2.5 ULN, Cr≤1 ULN.

Sign the informed consent and have good compliance.

Exclusion Criteria:

Neutrophil < 1.5×10^9/L, PLT < 100×10^9/L (PLT < 80×10^9/L in patients with liver metastasis), or Hb < 90g/L; blood transfusion within 2 weeks before enrollment is not allowed to meet the enrollment criteria.

TBIL > 1.5 ULN, or TBIL > 2.5 ULN in patients with liver metastasis. AST or ALT > 2.5 ULN, or ALT and / or AST > 5 ULN in patients with liver metastasis.

Cr > 1.5 ULN, or creatinine clearance < 50ml / min (calculated according to Cockcroft Gault formula).

APTT > 1.5 ULN, PT > 1.5 ULN (subject to the normal value of the clinical trial research center).

Serious electrolyte abnormalities. Urinary protein ≥ 2+, or 24-hour urine protein ≥1.0g/24h. Uncontrolled hypertension: SBP >140mmHg or DBP > 90mmHg. The presence of gastrointestinal diseases such as gastric or duodenal active ulcers, ulcerative colitis or unresected tumours with active bleeding; or other conditions likely to cause gastrointestinal bleeding or perforation; or unhealed gastrointestinal perforation or gastrointestinal fistula after surgical treatment.

A history of arterial thrombosis or deep vein thrombosis within 6 months; a history of bleeding or evidence of bleeding tendency within 2 months.

A history of heart disease within 6 months (including congestive heart failure, acute myocardial infarction, severe/unstable angina, coronary artery bypass grafting, cardiac insufficiency ≥ NYHA grade 2 and LVEF<50%).

Uncontrolled malignant pleural effusion, ascites, or pericardial effusion. History of anti-PD-1, PD-L1, PD-L2, CTLA-4 or any other specific T cell co-stimulation or checkpoint pathway targeted therapy.

The presence of a clinically detectable second primary malignancy, or history of other malignancies within 5 years excluding adequately treated non-melanoma skin cancer, carcinoma in situ of cervix and superficial bladder tumour (non-invasive tumour, or carcinoma in situ, or T1).

A history of liver disease including, but not limited to HBV infection or HBV DNA positive(≥1×10^4/ml), HCV infection or HCV DNA positive(≥1×10^3/ml) and liver cirrhosis.

Pregnant or lactating women or women who may be pregnant have a positive pregnancy test before the first medication; Or the female participants themselves and their partners who were unwilling to implement strict contraception during the study period.

The investigator considers that the subject is not suitable to participate in this clinical study due to any clinical or laboratory abnormalities or compliance problems.

Serious mental abnormalities. The diameter of brain metastasis is greater than 3cm or the total volume is greater than 30cc.

Clinical or radiological evidence of spinal cord compression, or tumours within 3 mm of the spinal cord on MRI.

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: a first-line cohort A and a second-line cohort B

Drug: standard systemic therapy combined with high/low-dose radiotherapy plus toripalimab; First-line standard systemic therapies in cohort A include: FOLFOX/XELOX+ bevacizumab, FOLFOX/XELOX+cetuximab (KRAS/NRAS/BRAF WT and left-sided tumors only), FOLFIRINOX+ bevacizumab. Second-line standard systemic therapies in cohort B include: FOLFOX/XELOX+ bevacizumab, FOLFOX/XELOX+cetuximab (KRAS/NRAS/BRAF WT), FOLFIRI/irinotecan+raltitrexed/irinotecan/+bevacizumab, FOLFIRI/irinotecan+raltitrexed/irinotecan/+cetuximab (KRAS/NRAS/BRAF WT), based on the previous first-line chemotherapy and adverse events. Toripalimab will be given at 240 mg q3w. Radiotherapy regimes include 4-8 fractions of 4-12Gy via SABR or hypofractionated radiotherapy (HFRT) and 5 fractions of 0.5-2Gy via LDRT

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
PFS	Defined as the time from initiation of treatment to PD or death from any cause.	Up to 2 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
DCR	The percentage of patients with disease control in all metastatic lesions. Disease control is defined as CR, PR, or stable disease (SD) per RECIST v1.1 and iRECIST after treatment.	Up to 1 year
OS	Defined as the time from initiation of treatment to death from any cause.	Up to 3 years
ORR	The percentage of patients with objective response in all metastatic lesions.	Up to 1 year
Adverse events	The percentage of patients with treatment-related acute toxicities as assessed by NCI CTCAE v5.0, from treatment initiation until 90 days upon completion of immunotherapy.	Up to 3 years

Collaborators and Investigators

• Sponsor: Fudan University

Study record dates

Study Major Dates

• Study Start (Actual): April 1, 2024
• Primary Completion (Estimated): December 1, 2026
• Study Completion (Estimated): December 1, 2027

Study Registration Dates

• First Submitted: July 23, 2024
• First Submitted That Met QC Criteria: July 24, 2024
• First Posted (Actual): July 29, 2024

Study Record Updates

• Last Update Posted (Actual): July 29, 2024
• Last Update Submitted That Met QC Criteria: July 24, 2024
• Last Verified: July 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; Colonic Diseases; Intestinal Diseases; Intestinal Neoplasms; Rectal Diseases; Colorectal Neoplasms
• Other Study ID Numbers: FDRT-2024-32-3585

Drug and device information, study documents

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