Study of 5-fluorouracil (5-FU) in Patients With Metastatic Colorectal Cancer

NCT ID: NCT06501989

Last Updated: 2025-04-17

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

PHASE2

Total Enrollment

10 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-12-15

Study Completion Date

2026-08-15

Brief Summary

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The purpose of this research is to see if adjusting the dose of 5-fluorouracil based on its concentration in your blood will improve the treatment of your metastatic colon cancer.

Detailed Description

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5-fluorouracil (5-FU) has been the most widely used agent in the treatment of early stage and advanced colorectal cancer. Traditionally, 5-FU dosing is based on body surface area (BSA). However, BSA-dosing has been associated with a wide range of pharmacokinetic (PK) variability, resulting in marked differences in drug exposure and toxicities in an individual. There is a significant association between the risk of 5-FU-related toxicities and the extent of 5- FU systemic exposure, which can be measured using a well-established pharmacokinetic (PK) assay.

Conditions

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Metastatic Colorectal Cancer

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Each cycle of chemotherapy is 2 weeks long, so you will be receiving treatment on the study for a total of 8 weeks. You will also need additional imaging (CT scans) after you complete the first four cycles of chemotherapy, which brings your total time in the study to about 3 months including treatment and follow-up.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Chemotherapy with 5-FU/Leucovorin (LV) alone, with oxaliplatin or irinotecan or both

Plasma specimens will be collected for the measurement of plasma 5-FU level from patients receiving 5-FU/LV alone, with oxaliplatin (mFOLFOX6) or irinotecan (FOLFIRI), or both (mFOLFOXIRI) chemotherapy. 5-FU doses will be modified based on the assay results.

Group Type EXPERIMENTAL

Biweekly 5-FLUOROURACIL (5-FU)

Intervention Type DRUG

5-FU 2400 mg/m². Infusion for 46 hours. Leucovorin 200 mg/m². Either a vascular endothelial growth factor (VEGF) inhibitor or epidermal growth factor (EGFR) inhibitor or may be added to the regimen at the discretion of the treating physician. Repeat every 2 weeks.

Biweekly Modified FOLFOX6

Intervention Type DRUG

Oxaliplatin 85 mg/m². 5-FU 400 mg/m² on day 1 as bolus (OPTIONAL). 5-FU 2400 mg/m² Infusion for 46 hours. Leucovorin 200 mg/m2. Repeat every 2 weeks

Biweekly FOLFIRI

Intervention Type DRUG

Irinotecan 180 mg/m2. 5-FU 400 mg/m2 on day 1 as bolus (OPTIONAL). 5-FU 2400 mg/m2 Infusion for 46 hours. Leucovorin 200 mg/m2.

Repeat every 2 weeks.

mFOLFOXIRI

Intervention Type DRUG

Irinotecan 165 mg/m2. Oxaliplatin 85 mg/m2. 5-FU 2400 mg/m2 Infusion for 46 hours. Repeat every 2 weeks.

Interventions

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Biweekly 5-FLUOROURACIL (5-FU)

5-FU 2400 mg/m². Infusion for 46 hours. Leucovorin 200 mg/m². Either a vascular endothelial growth factor (VEGF) inhibitor or epidermal growth factor (EGFR) inhibitor or may be added to the regimen at the discretion of the treating physician. Repeat every 2 weeks.

Intervention Type DRUG

Biweekly Modified FOLFOX6

Oxaliplatin 85 mg/m². 5-FU 400 mg/m² on day 1 as bolus (OPTIONAL). 5-FU 2400 mg/m² Infusion for 46 hours. Leucovorin 200 mg/m2. Repeat every 2 weeks

Intervention Type DRUG

Biweekly FOLFIRI

Irinotecan 180 mg/m2. 5-FU 400 mg/m2 on day 1 as bolus (OPTIONAL). 5-FU 2400 mg/m2 Infusion for 46 hours. Leucovorin 200 mg/m2.

Repeat every 2 weeks.

Intervention Type DRUG

mFOLFOXIRI

Irinotecan 165 mg/m2. Oxaliplatin 85 mg/m2. 5-FU 2400 mg/m2 Infusion for 46 hours. Repeat every 2 weeks.

Intervention Type DRUG

Other Intervention Names

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5-FU fluorouracil, leucovorin, oxaliplatin combined irinotecan with fluorouracil (5FU) and folinic acid combined folinic acid, fluorouracil (5FU), oxaliplatin, irinotecan combined

Eligibility Criteria

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Inclusion Criteria

* Males or females at least 18 years of age.
* Histologically confirmed metastatic colorectal cancer eligible for treatment with 5-FU.
* No prior therapy for metastatic disease. If adjuvant 5-FU or FOLFOX was administered, the last dose must have been at least 6 months prior to the diagnosis of metastatic disease.
* Adequate organ function.
* Eastern Cooperative Oncology Group (ECOG) status less than or equal to 2.
* Life expectancy \> 3 months.

Exclusion Criteria

* Untreated brain metastasis. Treated brain metastases are allowed as long as symptoms have resolved off of steroids.
* At least 4 weeks from any prior surgery or 2 weeks from radiation treatments.
* Known dihydropyrimidine dehydrogenase (DPD) deficiency.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Inova Health Care Services

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Jasmine Huynh, MD

Role: PRINCIPAL_INVESTIGATOR

Inova Schar Cancer Institute

Locations

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Inova Health Care Service

Falls Church, Virginia, United States

Site Status

Countries

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United States

Central Contacts

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Keary Jane't

Role: CONTACT

571-472-4724

Elahe Mollapour

Role: CONTACT

Facility Contacts

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Keary Jane't

Role: primary

571-472-4724

Elahe Mollapour

Role: backup

References

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Other Identifiers

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INOVA-2024-27

Identifier Type: -

Identifier Source: org_study_id

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