Skip to content

Study of ctDNA Guided Change in Tx for Refractory Minimal Residual Disease in Colon Adenocarcinomas

Proof of Concept Study of ctDNA Guided Change in Treatment for Refractory Minimal Residual Disease in Colon Adenocarcinomas

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04920032
Enrollment
22
Registered
2021-06-09
Start date
2021-08-26
Completion date
2028-01-21
Last updated
2026-05-11

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

Conditions

Colon Adenocarcinoma, Colorectal Cancer

Brief summary

This is a phase 1b, prospective, single arm, non-randomized, open-label clinical trial determining the efficacy of adjuvant trifluridine and tipiracil (TAS-102) in combination with irinotecan in patients with ctDNA positive colon adenocarcinoma.

Detailed description

Treatment on study will be administered in 14 day cycles.

Interventions

DRUGTAS-102

Given PO

DRUGIrinotecan

Given IV

COMBINATION_PRODUCTStandard Treatment

6 cycles for a 2-week regimen (infusional 5FU based) and up to 4 cycles for a 3-week regimen (oral capecitabine based) after randomization

DIAGNOSTIC_TESTSignatera MRD ctDNA Assay

To be performed within 6-8 weeks of Cycle 1 Day 1. A Mid-treatment ctDNA is to be completed within 6 - 8 weeks of starting treatment. ctDNA is to also be completed within four weeks after completion of study treatment (+/- two weeks)

Sponsors

University of California, Irvine
Lead SponsorOTHER
Taiho Pharmaceutical Co., Ltd.
CollaboratorINDUSTRY
Natera, Inc.
CollaboratorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Patients must have histologically or cytologically confirmed adenocarcinoma of the colon (high rectal cancer is eligible if resected and no radiation needed). Other histologies which are treated per NCCN guidelines for adjuvant colon cancer are eligible. 2. Must have Stage II, Stage III, or Stage IV colorectal cancer after curative intent resection eligible for adjuvant doublet chemotherapy for at least 3 months. 3. Must have ctDNA positive assay (tested by Signatera MRD assay) after at least 3 months of perioperative chemotherapy 4. Age ≥ 18 years 5. Performance status: ECOG performance status ≤2 6. Life expectancy of greater than 3 months 7. Adequate organ and marrow function as defined below: 1. leukocytesL ≥ 3,000/mcL 2. absolute neutrophil count: ≥ 1,500/mcL 3. platelets: ≥ 80,000/mcl 4. total bilirubin: within normal institutional limits 5. AST(SGOT)/ALT(SPGT): ≤ 3 X institutional upper limit of normal or ≤ 5 X if liver metastases are present 6. creatinine: \<1.5 X ULN 8. The effects of TAS-102 on the developing human fetus at the recommended therapeutic dose are unknown. For this reason and because topoisomerase inhibitors are known to be teratogenic, women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 90 days following completion of therapy. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately. a. A female of child-bearing potential is any woman (regardless of sexual orientation, having undergone a tubal ligation, or remaining celibate by choice) who meets the following criteria: * Has not undergone a hysterectomy or bilateral oophorectomy; or * Has not been naturally postmenopausal for at least 12 consecutive months (i.e., has had menses at any time in the preceding 12 consecutive months). 9. Ability to swallow tablets 10. Ability to understand and the willingness to sign a written informed consent.

Exclusion criteria

1. Patients who have had major surgery within 4 weeks, or chemotherapy or radiotherapy within 2 weeks prior to Cycle 1 Day 1 2. All toxicities attributed to prior anti-cancer therapy other than alopecia must have resolved to grade 1 or baseline 3. Patients may not be receiving any other investigational agents. 4. Patients with known metastases. 5. History of allergic reactions attributed to compounds of similar chemical or biologic composition to TAS-102, irinotecan or other agents used in study. 6. Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. 7. Prior treatment with TAS-102 at any time or irinotecan within 90 days from enrollment. 8. History of another primary cancer within the last 3 years with the exception of non-melanoma skin cancer, early-stage prostate cancer, or curatively treated cervical carcinoma in-situ. 9. Inability to comply with study and follow-up procedures as judged by the Investigator 10. Patients who are pregnant or nursing due to the potential for congenital abnormalities and the potential of this regimen to harm nursing infants. -

Design outcomes

Primary

MeasureTime frameDescription
Percentage of ctDNA positivity in treatment cohort after 6 cycles or at least 3 months of adjuvant treatment6 monthsPercent of patients positive for ctDNA after 6 cycles or at least 3 months months after starting adjuvant treatment will be used to estimate the efficacy of adjuvant trifluridine and tipiracil (TAS102) in combination with irinotecan in patients with ctDNA positive colon adenocarcinoma. The Signatera MRD ctDNA Assay will be used to measure ctDNA positivity.

Secondary

MeasureTime frameDescription
Percentage of Grade 3-5 Adverse Events8 weeksTo evaluate the tolerability of drug-related grade 3-5 adverse events in patients with ctDNA positive colon adenocarcinoma. Toxicity and adverse events are based on the CTCAE (NCI Common Terminology Criteria for Adverse Events) Version 5.0.

Countries

United States

Contacts

CONTACTChao Family Comprehensive Cancer Center University of California, Irvine
ucstudy@uci.edu1-877-827-7883
CONTACTUniversity of California Irvine Medical
PRINCIPAL_INVESTIGATORFarshid Dayyani, MD, PhD

Chao Family Comprehensive Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 12, 2026