- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04269369
Implementation of Pre-emptive Geno- and Phenotyping in 5-Fluorouracil- or Capecitabine-treated Patients
Implementation of Pre-emptive Geno- and Phenotyping in 5-Fluorouracil- or Capecitabine-treated Patients With the Aim of Reducing Toxicity
The aim of this study is to investigate if the systematic implementation of pre-emptive geno- and phenotyping, and therefore a dose reduction based on the French guidelines and the literature during the first month of treatment, reduces grade 3 or greater toxicity in patients treated with 5-FU (5-fluorouracil) or capecitabine.
Therefore, a monocentric, partial prospective and partial retrospective trail was designed.
Study Overview
Status
Intervention / Treatment
Detailed Description
5-FU (5-fluorouracil) and its oral prodrug capecitabine are commonly used drugs in various chemotherapy regimens. According to the literature, approximately 30% of the patients experience at least a grade three toxicity during treatment, mainly characterized by diarrhea, mucositis, hematological toxicity or hand-foot syndrome. This toxicity can lead to discontinuation or interruption of the therapy, hospitalization and in 1% of the cases even to mortality. This leads to an increase in health care costs, mainly driven by the cost of hospitalization.
The metabolism of 5-FU and its prodrug is primarily determined by the dehydropyrimidine dehydrogenase (DPD) enzyme. The gene encoding for this enzyme, the DPYD, is known for his genetic polymorphism. Five percent of the population has a partial DPYD deficiency and 0.01 to 0.1 percent has a full DPYP deficiency. Partial deficiency leads to a reduced activity of DPD and therefore to a reduced degradation of 5-FU or capecitabine to its inactive metabolites. This leads to an increased toxicity. The four DPYD variants considered most clinically relevant are DPYD * 2A, DPYD * 13, c.1236G> A and c.2846A> T. Patients with polymorphisms DPYD * 2A and DPYD * 13 have no residual enzyme activity, while in patients with polymorphisms 1236G> A and c.2846A> T, there is still partial enzyme activity present. In addition to genotyping, partial DPYD deficiency can also be detected by phenotyping. In the case of reduced enzyme activity of DPYD, the degradation of uracil is disturbed, causing an increase in uracil and a decrease in UH2 in plasma. There is a strong correlation between the UH2 / U ratio in plasma and the halflife, clearance and plasma levels of 5-FU.
French guidelines, HAS (La Haute Autorité de santé), recommend to adjust the dose of these drugs at the start of treatment based on the results of both the genetic and phenotypic studies.
The aim of this study is to investigate if the systematic implementation of pre-emptive geno- and phenotyping, and therefore a dose reduction based on the French guidelines and the literature during the first month of treatment, reduces grade 3 or greater toxicity in patients treated with 5-FU or capecitabine.
Therefore, a monocentric, partial prospective and partial retrospective trail was designed.
Study Type
Enrollment (Anticipated)
Phase
- Phase 4
Contacts and Locations
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients aged 18 years or older
- WHO (world health organization) classification 0,1 or 2
- A suspected start with 5-FU or capecitabine in mono or combination therapy
- The knowledge of the result of the geno and phenotyping before the start of the treatment
Exclusion Criteria:
- Not meeting inclusion criteria
- Homozygote genotype or uracil 100 ng/ml or greater
- The lacking of the result of the geno and / or phenotyping before the start of treatment
- Patients who received 5-FU or capecitabine in the past
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Group A
Dosage according to French guidelines
|
The aim of this study is to investigate if the systematic implementation of pre-emptive geno- and phenotyping, and therefore a dose reduction based on the French guidelines and the literature during the first month of treatment, reduces grade 3 or greater toxicity in patients treated with 5-FU or capecitabine. Therefore a dosing table was obtained by combining the results of the study by Henricks et al., Launay et al. and Yang et al. and the recommendations from the French HAS guideline. The treatment schedule then will be discussed by the team of doctors and paramedics at the weekly MOC (multidisciplinary cancer consultation). Complementary, the pharmacist provides dose advice with regard to the start of 5-FU or capecitabine treatment. In a subgroup, the group of patients with genotype "wild type" and phenotype "intermediate metabolizer", a comparison will be made between group A with dosage according to French guidelines and group B with dosage according to literature. |
EXPERIMENTAL: Group B
Dosage according to literature
|
The aim of this study is to investigate if the systematic implementation of pre-emptive geno- and phenotyping, and therefore a dose reduction based on the French guidelines and the literature during the first month of treatment, reduces grade 3 or greater toxicity in patients treated with 5-FU or capecitabine. Therefore a dosing table was obtained by combining the results of the study by Henricks et al., Launay et al. and Yang et al. and the recommendations from the French HAS guideline. The treatment schedule then will be discussed by the team of doctors and paramedics at the weekly MOC (multidisciplinary cancer consultation). Complementary, the pharmacist provides dose advice with regard to the start of 5-FU or capecitabine treatment. In a subgroup, the group of patients with genotype "wild type" and phenotype "intermediate metabolizer", a comparison will be made between group A with dosage according to French guidelines and group B with dosage according to literature. |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The frequency of severe fluoropyrimidine-related toxicity
Time Frame: about 3 months
|
The primary endpoint of the study is the frequency of severe (National Cancer Institute Common Terminology Criteria for Adverse Events version 5 grade ≥3) fluoropyrimidine-related toxicity across the entire treatment duration.
Toxicity incidence between DPYD variant allele carriers and DPYD wild-type patients and poor or intermediate metabolizers and extensive metabolizers will be compared.
|
about 3 months
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: An Lambaerts, Jessa Hospital
Study record dates
Study Major Dates
Study Start (ANTICIPATED)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Digestive System Diseases
- Neoplasms
- Neoplasms by Site
- Endocrine System Diseases
- Digestive System Neoplasms
- Endocrine Gland Neoplasms
- Pancreatic Diseases
- Pancreatic Neoplasms
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Antimetabolites, Antineoplastic
- Antimetabolites
- Antineoplastic Agents
- Immunosuppressive Agents
- Immunologic Factors
- Fluorouracil
Other Study ID Numbers
- FluorouracilCapecitabine001
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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