Metastatic Colorectal CancerPhase 2NCT06959550
Phase II Study of Anti-PD-1/VEGF Bispecific Antibody Ivonescimab in Patients With Previously Treated Metastatic Colorectal Cancer
A Phase 2 study testing Ivonescimab in people with Metastatic Colorectal Cancer, run by M.D. Anderson Cancer Center at 1 site in United States.
Trial summary
The goal of this clinical research study is to learn if ivonescimab can help to control previously treated, metastatic colorectal cancer. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Metastatic Colorectal Cancer
- What is being tested?
- Ivonescimab
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 90 participants
- Where
- 1 siteUnited States
- Study dates
- 28 Jul 2025to 1 Jul 2030
- Phase
- Phase 2
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Capable of giving signed informed consent
- Male and female adult participants 18 years of age or older on day of signing informed consent.
- Histological or cytological confirmed advanced, metastatic adenocarcinoma of colon or rectum.
- Known MMR or MSI status performed by local standard of practice. (e.g., IHC and/or PCR, next-generation sequencing)
- Cohort-specific criteria
- Cohort 1: MSI-H/dMMR: ICI-refractory
Show all 36Show fewer
- dMMR or MSI-H per local testing
- Demonstrated radiographic or clinical disease progression following treatment with immune checkpoint inhibitors including anti-PD-1 +/- anti-CTLA-4 therapy. If progression occurred after first imaging assessment, then pseudo-progression should be excluded by concurrent carcinoembryonic antigen (CEA) or other tumor marker or ctDNA elevation, or clinical symptom progression, or short-interval repeat imaging confirming progression.
- Must have received at least 2 doses of a PD1/PD-L1 inhibitor.
- Progressive disease either during therapy or within 3 months of last dose of therapy.
- No serious adverse immune-related adverse events (grade 3 or higher) with previous immune checkpoint therapy, that were symptomatic and required prolonged immunosuppression (>6 weeks).
- Cohort 2: pMMR with liver metastases
- pMMR or non-MSI-H per local testing
- Presence of active liver metastases per radiographic imaging
- Patients with any bulky liver metastases measuring >5.0 cm are not eligible
- Cohort 3: pMMR without liver metastases
- pMMR or non-MSI-H per local testing
- No liver metastases per radiographic imaging (note: previously treated or resected liver metastases are allowed if treatment was >6 months prior without liver progression)
- Known extended RAS and BRAF status as per local standard of practice (Cohorts 2 and 3 only)
- Participant must have progressed (radiologically or clinically) or been intolerant to fluoropyrimidine, irinotecan, and oxaliplatin (Cohorts 2 and 3 only)
- Patient must have evidence of progression on or after the last treatment regimen received and within 6 months prior to study enrollment
- Patients who were intolerant to prior systemic chemotherapy regimens are eligible if there is documented evidence of clinically significant intolerance despite adequate supportive measures.
- Perioperative chemotherapy exposure can be considered if the participant had disease recurrence within 12 months of completion of neoadjuvant chemotherapy or 6 months of completion of adjuvant chemotherapy
- ECOG (Eastern Cooperative Oncology Group) PS of 0 to 1.
- Adequate hematologic and organ function as assessed by the following laboratory tests performed within 7 days before treatment initiation:
- Total bilirubin .1.5 x the upper limit of normal (ULN). Total bilirubin (.3 x ULN) is allowed if Gilbert fs syndrome is documented.
- Alanine transaminase (ALT) and aspartate aminotransferase (AST) .2.5x ULN (.5 x ULN for patients with liver involvement of their cancer)
- Platelet count .100,000 /mm3, Hemoglobin (Hb) .9 g/dL, WBC .2000/ƒÊL absolute neutrophil count (ANC) .1500/mm3 without red blood cell transfusion or growth factor administered within 7 days of screening CBC.
- Serum creatinine .1.5 x ULN or creatinine clearance .50 mL/min (measured or calculated using the Cockroft-Gault formula)
- Prothrombin time-international normalized ratio (PT/INR) . 1.5 x ULN and partial prothrombin time (PTT) or activated partial thromboplastin time (aPTT) . 1.5 ~ ULN (unless abnormalities are unrelated to coagulopathy) This applies only to patients who are not on therapeutic anti-coagulation. Patients receiving therapeutic anti-coagulation should be on a stable dose.
- Estimated CrCl . 50 mL/min.
- Proteinuria . 30 mg/dL.
- Measurable disease as determined by iRECIST v1.1.
- Ability to provide recent tumor tissue is mandatory for all participants at screening, either through pre-treatment biopsy or archived tissue. For archived tissue, FFPE block or a minimum of 10 slides is recommended with exceptions to these criteria permitted for consideration by the principal investigator.
- Anticipated life expectancy greater than 3 months
- Women of childbearing potential (WOCBP) must agree to follow instructions for method(s) of contraception for the duration of study intervention and 4 months after the last dose of study drug. Males who are sexually active with WOCBP must agree to follow instructions for method(s) of contraception for the duration of study intervention and 4 months after the last dose of study drug. In addition, male participants must be willing to refrain from sperm donation during this time. Contraceptive use by men or women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.
Who cannot join
- Any single liver metastasis >5.0 cm (Cohort 2 only)
- Except for MSI-H/dMMR tumors, prior therapy with PD-1, PD-L1, or CTLA-4 inhibitors (Cohorts 2 and 3 only).
- Patient who discontinued prior therapy with immune checkpoint inhibitors due to Grade 2 neurologic, cardiac, or ophthalmologic events or recurrent Grade 2 pneumonitis are not eligible for the trial (Cohort 1 only).
- Systemic anti-cancer treatment within 14 days or less than 5 half-lives (whichever is shorter) of the first dose of study treatment.
- Has unresolved clinically significant toxicity of greater than or equal to NCI Institute Common Terminology Criteria for AEs (CTCAE v5.0) grade 2 attributed to any prior therapies (excluding anemia, lymphopenia, alopecia, skin pigmentation, and immune toxicities for MSI-H/dMMR ICI-refractory cohort as listed in cohort inclusion criteria).
- History of arterial thromboembolic event, venous thromboembolic event of grade 3 and above as specified in NCI CTCAE v5.0, transient ischemic attack, cerebrovascular accident, hypertensive crisis, or hypertensive encephalopathy within 12 months prior to enrollment
Show all 31Show fewer
- Unstable angina, myocardial infarction, congestive heart failure (New York Heart Association [NYHA] classification . grade 2) or unstable vascular disease (eg, aortic aneurysm at risk of rupture, Moyamoya disease) that required hospitalization within 12 months prior to randomization, or other cardiac impairment that may affect the safety evaluation of the study drug (eg, poorly controlled arrhythmias, myocardial ischemia)
- Acute exacerbation of chronic obstructive pulmonary disease within 4 weeks before enrollment
- Poorly controlled hypertension with repeated systolic blood pressure . 150 mmHg or diastolic blood pressure . 100 mmHg after oral antihypertensive therapy
- Active autoimmune or lung disease requiring systemic therapy (eg, with disease modifying drugs, prednisone >10 mg daily or equivalent, immunosuppressant therapy) within 2 years prior to randomization, however the following will be allowed: a. Replacement therapy (eg, thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is permitted. b. Intermittent use of bronchodilators, inhaled corticosteroids, or local corticosteroid injections is permitted
- Know history of esophageal gastric varices, severe ulcers, wounds that do not heal, abdominopelvic fistula, intra-abdominal abscesses, or acute gastrointestinal bleeding within 6 months prior to enrollment
- History of perforation of the gastrointestinal tract and/or fistula, gastrointestinal obstruction (including incomplete intestinal obstruction requiring parenteral nutrition), or extensive bowel resection (partial colectomy or extensive small bowel resection) within 6 months prior to enrollment
- History of bleeding tendencies or coagulopathy and/or clinically significant bleeding symptoms or risk within 4 weeks prior to enrollment, including but not limited to:
- Hemoptysis (defined as coughing up . 0.5 teaspoon of fresh blood or small blood clots. Note: transient hemoptysis associated with diagnostic bronchoscopy is allowed
- Nasal bleeding/epistaxis (bloody nasal discharge is allowed)
- Current use of prophylactic or full-dose anticoagulants or anti-platelet agents for therapeutic purposes that is not stable prior to enrollment is not permitted. The use of full-dose anticoagulants is permitted if the international normalized ratio (INR) or activated partial thromboplastin time (aPTT) is within therapeutic limits according to the medical standard of the enrolling institution.
- Subjects whose tumors invade peripheral important organs and blood vessels (such as heart and pericardium, trachea, esophagus, aorta, superior vena cava, etc), and who are at risk of esophageal tracheal fistula or esophageal pleural fistula or intestinal fistula
- Symptomatic CNS metastases, CNS metastases with hemorrhagic features, CNS metastasis . 1.5 cm, CNS radiation within 7 days prior to randomization, potential need for CNS radiation within the first cycle, or leptomeningeal disease. Note: Patients must have stopped corticosteroids or be on physiologic corticosteroid replacement therapy (prednisone .10 mg daily or equivalent).
- Live vaccine or live attenuated vaccine within 4 weeks prior to planned enrollment, or if scheduled to receive a live vaccine or live attenuated vaccine during the study period. Inactivated vaccines are permitted.
- Severe infection within 4 weeks prior to enrollment, including but not limited to comorbidities requiring hospitalization, sepsis, or severe pneumonia; active infection (as determined by the investigator) requiring systemic anti-infective therapy within 2 weeks prior to enrollment. Participants with HIV, HCV, or HBV infection may be included if suppressive antiviral therapy has been administered and the viral load is undetectable.
- Has pre-existing peripheral neuropathy that is . grade 2 per NCI CTCAE v5.0.
- Major surgical procedures or serious trauma within 4 weeks prior to enrollment, or plans for major surgical procedures within 4 weeks after the first dose (as determined by the investigator). Minor local procedures (excluding central venous catheterization and port implantation) within 3 days prior to enrollment.
- Uncontrolled pleural effusions, pericardial effusions, or ascites that is clinically symptomatic. Note: Patients managed with indwelling catheters (e.g. PleurX) are allowed.
- History of non-infectious pneumonia requiring systemic corticosteroids, or current interstitial lung disease
- Active or prior history of inflammatory bowel disease (eg, Crohn fs disease, ulcerative colitis, or chronic diarrhea)
- Known history of allogeneic organ transplantation or allogeneic hematopoietic stem cell transplantation
- Known allergy to any component of any study drug or known history of severe hypersensitivity to other monoclonal antibodies
- Has any other clinically significant cardiac, respiratory, or other medical or psychiatric condition that might interfere with participation in the trial or interfere with the interpretation of trial results, in the opinion of the investigator.
- Participants with a condition requiring systemic treatment with either corticosteroids (>10 mg daily prednisone equivalent) or other immunosuppressive medications within 14 days of start of study treatment. Inhaled or topical steroids, and adrenal replacement steroid doses >10 mg daily prednisone equivalent, are permitted in the absence of active autoimmune disease.
- Pregnancy or breast feeding.
- Psychological, familial, or sociological condition potentially hampering compliance with the study protocol and follow-up schedule.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
The University of Texas M. D. Anderson Cancer Center
Houston, Texas, 77030
Saurav Haldar, MD, 713-792-5111, GIClinicalTrials@mdanderson.org
Saurav Haldar, MD
About this study
The goal of this clinical research study is to learn if ivonescimab can help to control previously treated, metastatic colorectal cancer.
Read the detailed description
Primary Objective:
- To evaluate the efficacy of ivonescimab, as determined by the objective response rate per iRECIST, in three distinct cohorts of patients with treatment-refractory metastatic colorectal cancer: 1) dMMR/MSI-H refractory to anti-PD-1 therapy, 2) pMMR/MSS without liver metastases, and 3) pMMR/MSS with liver metastases.
Secondary Objective:
- To evaluate the safety of ivonescimab in patients with metastatic colorectal cancer.
- To evaluate the efficacy of ivonescimab, as determined by the objective response rate per RECIST 1.1, in three distinct cohorts of patients with treatment-refractory metastatic colorectal cancer: 1) dMMR/MSI-H refractory to anti-PD-1 therapy, 2) pMMR/non-MSI-H without liver metastases, and 3) pMMR/non-MSI-H with liver metastases.
- To evaluate changes in intratumoral CD8+ T cell density following ivonescimab therapy.
Exploratory Objectives:
- To assess the time to response following treatment with ivonescimab in patients with metastatic colorectal cancer.
- To assess the durability of response following treatment with ivonescimab in patients with metastatic colorectal cancer.
- To evaluate progression-free survival following treatment with ivonescimab in patients with metastatic colorectal cancer.
- To evaluate overall survival following treatment with ivonescimab in patients with metastatic colorectal cancer.
- To investigate clinical, pathologic, and molecular features associated with therapeutic response to ivonescimab in patients with metastatic colorectal cancer.
- To investigate changes in immune cell composition and distance relationships within the metastatic CRC tumor microenvironment following ivonescimab therapy.
- To evaluate changes in peripheral immune cell populations in metastatic CRC patients following ivonescimab therapy.
- Conditions
- Metastatic Colorectal Cancer
- Being tested
- Ivonescimab
- Medical subject headings
- Colorectal Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
IvonescimabDrug
Given by IV
| Study group | Role | What they receive |
|---|---|---|
| Treatment with Ivonescimab | Experimental | Participants will be assigned to the study using a Bayesian Optimal Phase 2 (BOP2) design Receives: Drug: Ivonescimab |
What is being measured
The primary outcome is the main question the study is designed to answer.
1. Safety and Adverse Events (AEs)
Incidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0
Measured: Through study completion; an average of 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
28 Jul 20251 Jul 2030
- First posted6 May 2025
- Study start28 Jul 2025
- Primary completion1 Jul 2028 (estimated)
- Study completion1 Jul 2030 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Metastatic Colorectal CancerStudies of the same condition, open and under way.
- More trials run by M.D. Anderson Cancer CenterThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 90 participants (estimated)
Sponsor and investigators
- Lead sponsor
- M.D. Anderson Cancer Center
- Sponsor type
- University, hospital or other
- Collaborators
- Akesobio Australia Pty Ltd, Summit Therapeutics
- Responsible party
- Sponsor
- Investigators
- Saurav Haldar, MD, Principal investigator, M.D. Anderson Cancer Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06959550
- Sponsor's protocol ID
- 2025-0278
- Other IDs
- NCI-2025-03211
- Status last verified
- May 2026
- First submitted
- 28 Apr 2025
- Last updated
- 20 May 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phase II Study of Anti-PD-1/VEGF Bispecific Antibody Ivonescimab in Patients With Previously Treated Metastatic Colorectal Cancer
- ClinicalTrials.gov ID
- NCT06959550
- Acronym / sponsor ID
- 2025-0278
- Conditions
- Metastatic Colorectal Cancer
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 90 participants (estimated)
- Lead sponsor
- M.D. Anderson Cancer CenterUniversity, hospital or other
- Collaborators
- Akesobio Australia Pty Ltd, Summit Therapeutics
- Study start
- 28 Jul 2025 (actual)
- Primary completion
- 1 Jul 2028 (estimated)
- Study completion
- 1 Jul 2030 (estimated)
- First posted
- 6 May 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The goal of this clinical research study is to learn if ivonescimab can help to control previously treated, metastatic colorectal cancer.
Detailed description
Primary Objective:
- To evaluate the efficacy of ivonescimab, as determined by the objective response rate per iRECIST, in three distinct cohorts of patients with treatment-refractory metastatic colorectal cancer: 1) dMMR/MSI-H refractory to anti-PD-1 therapy, 2) pMMR/MSS without liver metastases, and 3) pMMR/MSS with liver metastases.
Secondary Objective:
- To evaluate the safety of ivonescimab in patients with metastatic colorectal cancer.
- To evaluate the efficacy of ivonescimab, as determined by the objective response rate per RECIST 1.1, in three distinct cohorts of patients with treatment-refractory metastatic colorectal cancer: 1) dMMR/MSI-H refractory to anti-PD-1 therapy, 2) pMMR/non-MSI-H without liver metastases, and 3) pMMR/non-MSI-H with liver metastases.
- To evaluate changes in intratumoral CD8+ T cell density following ivonescimab therapy.
Exploratory Objectives:
- To assess the time to response following treatment with ivonescimab in patients with metastatic colorectal cancer.
- To assess the durability of response following treatment with ivonescimab in patients with metastatic colorectal cancer.
- To evaluate progression-free survival following treatment with ivonescimab in patients with metastatic colorectal cancer.
- To evaluate overall survival following treatment with ivonescimab in patients with metastatic colorectal cancer.
- To investigate clinical, pathologic, and molecular features associated with therapeutic response to ivonescimab in patients with metastatic colorectal cancer.
- To investigate changes in immune cell composition and distance relationships within the metastatic CRC tumor microenvironment following ivonescimab therapy.
- To evaluate changes in peripheral immune cell populations in metastatic CRC patients following ivonescimab therapy.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Treatment with Ivonescimab | Experimental | Drug: IvonescimabParticipants will be assigned to the study using a Bayesian Optimal Phase 2 (BOP2) design |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (36 listed)
- Capable of giving signed informed consent
- Male and female adult participants 18 years of age or older on day of signing informed consent.
- Histological or cytological confirmed advanced, metastatic adenocarcinoma of colon or rectum.
- Known MMR or MSI status performed by local standard of practice. (e.g., IHC and/or PCR, next-generation sequencing)
- Cohort-specific criteria
Key exclusion criteria (31 listed)
- Any single liver metastasis >5.0 cm (Cohort 2 only)
- Except for MSI-H/dMMR tumors, prior therapy with PD-1, PD-L1, or CTLA-4 inhibitors (Cohorts 2 and 3 only).
- Patient who discontinued prior therapy with immune checkpoint inhibitors due to Grade 2 neurologic, cardiac, or ophthalmologic events or recurrent Grade 2 pneumonitis are not eligible for the trial (Cohort 1 only).
- Systemic anti-cancer treatment within 14 days or less than 5 half-lives (whichever is shorter) of the first dose of study treatment.
- Has unresolved clinically significant toxicity of greater than or equal to NCI Institute Common Terminology Criteria for AEs (CTCAE v5.0) grade 2 attributed to any prior therapies (excluding anemia, lymphopenia, alopecia, skin pigmentation, and immune toxicities for MSI-H/dMMR ICI-refractory cohort as listed in cohort inclusion criteria).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| IvonescimabGiven by IV | Drug | Treatment with Ivonescimab |
Primary outcome
1. Safety and Adverse Events (AEs)
Time frame: Through study completion; an average of 1 year
Incidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 May 2026.
- MD Anderson Cancer Center WebsiteLink provided by the sponsor.
Related trials for Metastatic Colorectal Cancer
Not yet recruitingPhase 1
Hepatic Artery Infusion of Carfilzomib in Participants With Liver Metastatic Disease Previously Treated With Hepatic Artery Infusion Pump Therapy
Colorectal Neoplasms, Neoplasms
RecruitingPhase 1
A Study Evaluating the Safety and Efficacy of Targeted Therapies in Subpopulations of Patients With Metastatic Colorectal Cancer (INTRINSIC)
Metastatic Colorectal Cancer
Not yet recruitingPhase 2
SAMe in Prevention of Oxaliplatin-associated Liver Injury
Colorectal Cancer, Liver Metastases
RecruitingPhase 1
A Study of ERAS-0015 in Patients With Advanced or Metastatic Solid Tumors
Metastatic Solid Tumors
Not yet recruitingPhase 1/2
A Phase Ib/II Study of GFH276 in Combination With Chemotherapy (± Bevacizumab) or Cetuximab in Patients With RAS-mutant Metastatic Colorectal Cancer
CRC
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Saurav Haldar, MD principal investigator
M.D. Anderson Cancer Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Ivonescimab in people with Metastatic Colorectal Cancer, run by M.D. Anderson Cancer Center at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 36 inclusion and 31 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 20 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Saurav Haldar, MD (713-792-5111, GIClinicalTrials@mdanderson.org), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
1. Safety and Adverse Events (AEs) (time frame: Through study completion; an average of 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 May 2026.