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A Prospective Single-Arm Clinical Study of Maintenance Therapy with Cetuximab ß Plus Irinotecan After First-Line Induction Therapy for Unresectable Metastatic Colorectal Cancer with Wild-Type RAS/BRAF and Exploration of Related Serum Exosomal Biomarkers

A Prospective Single-Arm Clinical Study of Maintenance Therapy with Cetuximab ß Plus Irinotecan After First-Line Induction Therapy for Unresectable Metastatic Colorectal Cancer with Wild-Type RAS/BRAF and Exploration of Related Serum Exosomal Biomarkers

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600122996
Enrollment
Unknown
Registered
2026-04-20
Start date
2026-04-20
Completion date
Unknown
Last updated
2026-04-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Unresectable metastatic colorectal cancer with wild-type RAS/BRAF

Interventions

Intervention group:The patient will receive 8 cycles of Cetuximab ß injection combined with the FOLFIRI regimen for induction therapy, followed by maintenance therapy with Cetuximab ß injection combin

Sponsors

Zhongshan Hospital Affiliated to Xiamen University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. The patient voluntarily participates in this study, has good compliance, is able to cooperate with the trial requirements to complete observations and follow-ups, and has signed the informed consent form. 2. Aged >=18 years at the time of signing the informed consent form. 3. Histologically confirmed diagnosis of colon or rectal adenocarcinoma. 4. Presence of metastatic lesions (not amenable to radical resection). 5. Genetically confirmed wild-type RAS/BRAF genes. 6. Eastern Cooperative Oncology Group (ECOG) performance status score of 0–1. 7. Estimated survival time >=12 weeks. 8. Has recovered from relevant toxicities of prior therapy before study enrollment. 9. At least one measurable lesion meeting the RECIST 1.1 criteria (outside the radiation field) confirmed by CT or MRI. 10. Fertile subjects must use appropriate contraceptive methods during the study period and within 120 days after study completion, have a negative serum pregnancy test within 7 days prior to study enrollment, and must be non-lactating.

Exclusion criteria

Exclusion criteria: 1.Received radiotherapy or surgery within 30 days prior to initiation of treatment (excluding previous diagnostic biopsies); 2.Organ function meets any of the following criteria: Bone marrow: White blood cell (WBC) count 1.5 × upper limit of normal reference range; alanine aminotransferase (ALT) and aspartate aminotransferase (AST) > 2.5 × upper limit of normal reference range (for patients without liver metastasis) or > 5 × upper limit of normal reference range (for patients with liver metastasis); Kidney: Serum creatinine (Cr) > 1.5 × upper limit of normal reference range or creatinine clearance 10³ copies/mL); 18.Pregnancy or lactation; 19.Subjects with known alcohol or drug addiction, or other poor medical or psychiatric conditions that, in the investigator’s judgment, may affect protocol compliance and assessment of trial endpoints and render the subject ineligible for study participation; 20.Lack of legal capacity or limited legal capacity;

Design outcomes

Primary

MeasureTime frame
serum exosomes;

Countries

China

Contacts

Public ContactLi Xiao

Zhongshan Hospital Affiliated to Xiamen University

xiaoliboan@163.com+86 592 229 2012

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: May 1, 2026