Phase 2
Completed N=42
TAS-102, Irinotecan, and Bevacizumab for the Treatment of Pre-treated Metastatic or Unresectable Colorectal Cancer, the TABAsCO Study
Advanced Colorectal Carcinoma · Metastatic Colon Adenocarcinoma · Metastatic Rectal Adenocarcinoma · Recurrent Colon Adenocarcinoma
Source: ClinicalTrials.gov NCT04109924 ↗
Enrolled (actual)
42
Serious AEs
28.6%
Results posted
Feb 2026
Primary outcomePrimary: Median Progression Free Survival (PFS) — 7.9 months
Summary
This phase II trial studies how well TAS-102, irinotecan, and bevacizumab work in treating patients with pre-treated colorectal cancer that has spread to other places in the body (metastatic) or cannot be removed by surgery (unresectable). Drugs used in chemotherapy, such as TAS-102, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Irinotecan may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Immunotherapy with bevacizumab, may induce changes in body's immune system and may interfere with the ability of tumor cells to grow and spread. Giving TAS-102, irinotecan, and bevacizumab may work better in treating patients with colorectal cancer compared to traditional chemotherapy and bevacizumab.
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Median Progression Free Survival (PFS) |
7.9 | — |
| SECONDARY Number of Participants With Complete Response, Partial Response, Stable Disease and Progressive Disease |
1; 6; 20; 8 | — |
| SECONDARY Median Overall Survival (OS) |
16.7 | — |
| SECONDARY Disease-specific Survival (DSS) |
16.7 | — |
| SECONDARY Aggregate Rates of Adverse Events |
9; 33 | — |
Eligibility Criteria
Inclusion Criteria
- Advanced colorectal cancer (metastatic or unresectable): Histologically or cytological proven adenocarcinoma of the colon or rectum which is metastatic or otherwise incurable
- Prior treatment with a fluoropyrimidine (5-fluorouracil [5-FU] or capecitabine) and oxaliplatin in the metastatic/unresectable setting OR, recurrence within 12 months of adjuvant therapy with a regimen that included oxaliplatin
- Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0-1
- Hemoglobin >= 9 g/dL
- Absolute neutrophil count >= 1500/mm^3
- Platelet count >= 100,000/mm^3
- Creatinine = 1.5 x ULN creatinine clearance (CRCL) >= 30 mL/min (by Cockcroft-Gault)
- Bilirubin grade 1, excluding alopecia or similar toxicities which are not deemed to be clinically significant or put the participant at greater risk. Grade 2 neuropathy is permitted
- Major surgery within 4 weeks of anticipated start of therapy
- Uncontrolled hypertension: systolic blood pressure >= 150, diastolic blood pressure >= 100
- Unstable angina, symptomatic congestive heart failure or cardiac arrhythmia requiring anti-arrhythmic therapy (beta-blockers, calcium channel blockers and digoxin are allowed)
- Arterial or venous thrombotic or embolic events within 3 months of study initiation, unless well controlled on stable anti-coagulation for >= 2 weeks. This excludes uncomplicated catheter associated venous thrombosis
- History of cerebrovascular or myocardial ischemia within 6 months of initiation
- National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5.0 grade 3 or greater hemorrhage within the past 4 weeks
- Proteinuria >= 2+, unless 24 hour urine collection demonstrates =< 1 g of protein OR spot protein: creatinine demonstrates a ratio of =< 1
- Untreated brain metastases
- History of abnormal glucuronidation of bilirubin (Gilbert's syndrome)
- History of second primary malignancy within 3 years prior to enrollment, excluding in-situ cervical carcinoma, non-melanoma skin cancer or malignancy of equivalent risk which is highly unlikely to require systemic treatment in the next 2 years
- Have known active infection which would heighten the risk of complications
- Pregnant or nursing female participants
- Unwilling or unable to follow protocol requirements
- Any condition which in the investigator's opinion deems the participant an unsuitable candidate to receive study drug
Data sourced from ClinicalTrials.gov (NCT04109924). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.