PD-1 Inhibitors Combined With VEGF Inhibitors for Locally Advanced dMMR/MSI-H Colorectal Cancer
Study Details
Study Description
Brief Summary
In this open-label phase II study, patients will be scheduled for neoadjuvant treatment with PD-1 inhibitors (Camrelizumab) plus VEGF inhibitor (Apatinib) for dMMR/MSI-H colorectal cancer staged as locally advanced (cT3-4N+/-M0 for rectal cancer, cT4 or cT3 with extramural extension ≥5mm for colon cancer). Radiological evaluation will be preformed after 4 cycles of treatment. Patients with rectal cancer who achieve complete clinical response will be offered the choice of Watch & Wait.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
Phase 2 |
Detailed Description
This is an open-label phase II study, with the aim of determining the efficacy of PD-1 inhibitors (Camrelizumab) plus VEGF inhibitor (Apatinib) as a neoadjuvant therapy for dMMR/MSI-H locally advanced colorectal cancer.
Patients will be evaluated for eligibility within 14 days prior to study initiation with CT (for colon cancer) and/or MRI (for rectal cancer).
Patients will be given four cycles of Camrelizumab (200mg iv every 3 weeks) plus Apatinib (250mg QD day1-14) before being evaluated for response. For patients with colon cancer, if a SD/PD is achieved and the tumor is deemed unresectable, they will be offered chemotherapy±radiotherapy; for patients with rectal cancer who have a SD/PD, chemoradiotherapy will be offered.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: PD-1 inhibitors plus VEGF inhibitors Patients will be given 4 cycles of Camrelizumab (200mg iv every 3 weeks) plus Apatinib (250mg QD day1-14) before being evaluated for response. |
Drug: PD-1 inhibitor plus VEGF inhibitors
Camrelizumab 200mg IV every 3 weeks; Apatinib 250mg QD day 1-14. Rescue chemotherapy: Oxaliplatin 130mg/m2 IV drip Q3W d1+Capecitabine 1000mg/m2 QD d1-d14 Rescue chemoradiotherapy: Long-course radiotherapy +Capecitabine 825mg/m2 QD d1-d14
Other Names:
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Outcome Measures
Primary Outcome Measures
- Clinical complete response or pathological complete response [up to 2 year]
Clinical complete response or immunotherapy-related pathological complete response (cCR or immunotherapy-related pCR)
Secondary Outcome Measures
- Objective Response Rate (ORR, PR+CR) [up to 2 year]
- 3-year relapse-free survival [up to 3 years]
- 3-year overall survival [up to 3 years]
- Surgical complications [within 1 month after surgery]
- Number of participants with treatment-related adverse events as assessed by CTCAE v4.0 [up to 2 year]
Eligibility Criteria
Criteria
Inclusion Criteria:
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Locally confirmed dMMR or MSI-H colorectal carcinoma
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Tumor staging based on CT/MR or transrectal ultrasound imaging:
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Colon cancer: radiological high risk (rT4 or rT3 tumour with extramural extension ≥ 5mm with or without lymph node involvement)
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Rectal cancer: <12 cm from the anal verge and radiological high risk (rT3/4 with or without lymph node involvement)
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No sign of bowel obstruction, or bowel obstruction has been relieved by ostomy
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Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 within 10 days prior to study start
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Aged 18 or over
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Life expectancy of at least 2 years
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Measurable disease
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Female participants of childbearing potential must be willing to use adequate contraception for the course of the study starting with the first dose of study medication through 120 days after the last PD-1 antibody dose
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Male participants must agree to use adequate contraception for the course of the study starting with the first dose of study medication through 120 days after the last PD-1 antibody dose
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Adequate organ function
Exclusion Criteria:
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Active autoimmune disease that has required systemic treatment in past 2 years
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Diagnosis of immunodeficiency or receiving systemic steroid therapy or any other form of immunosuppressive therapy within 2 weeks prior to this study start
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Currently participating and receiving treatment in another study within 4 weeks of study start
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History of severe allergic reaction to monoclonal antibody
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Strong evidence of distant metastases or peritoneal nodules (M1)
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Colonic obstruction that has not been defunctioned
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Has received prior therapy with an immune checkpoint inhibitor (e.g., anti-programmed cell death [PD]-1, anti-PD ligand 1 [L1], anti-PD-L2 agent, or anti-cytotoxic T-lymphocyte-associated protein 4 [CTLA-4] agent, etc.) or anti-VEGF agents (e.g., Bevacizumab, Apatinib)
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Any other malignant disease within the preceding 5 years with the exception of non-melanomatous skin cancer, carcinoma in situ and early stage disease with a recurrence risk <5%
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Received a live vaccine within 30 days of planned start of study medication
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Known history of Human Immunodeficiency Virus (HIV), Hepatitis B or C
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Known history of, or any evidence of interstitial lung disease or active, non-infectious pneumonitis
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Known history of active tuberculosis (Bacillus tuberculosis [TB])
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Active infection requiring systemic therapy
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | 651 Dongfeng Road East | Guangzhou | Guangdong | China | 510060 |
Sponsors and Collaborators
- Sun Yat-sen University
- Guangdong Provincial People's Hospital
- Guangdong Provincial Hospital of Traditional Chinese Medicine
Investigators
- Principal Investigator: Pei-Rong Ding, M.D., Sun Yat-sen University
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- B2020-120-03