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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT00730678
Other study ID # PGEN5
Secondary ID R37CA036401P50GM
Status Recruiting
Phase
First received
Last updated
Start date August 17, 1998
Est. completion date March 2034

Study information

Verified date January 2024
Source St. Jude Children's Research Hospital
Contact Clinton F. Stewart, Pharm.D.
Phone 1-866-278-5833
Email referralinfo@stjude.org
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

To investigate whether genetic polymorphisms in genes encoding proteins involved in the metabolism or effects of drugs or environmental agents influence the disposition or effects of these xenobiotic substrates. To investigate the nature of heritability and the genetic basis of pharmacogenetic traits by studying family members of individuals with specific genotypes.


Description:

Pharmacogenetics is that discipline devoted to elucidating the genetic determinants of drug response. Particularly in the area of drug metabolism, many genes exhibit genetic polymorphism; that is, a stable percentage of the population (which generally differs by ethnic group) is deficient in the functional expression of the enzyme involved, and the deficiency is typically inherited as an autosomal recessive trait. With currently known polymorphisms in drug metabolism, the percentage of homozygous deficient individuals ranges from 0.3% to as many as 90% of the population, depending on the enzyme and the ethnic group. Our prior studies have revealed multigenic pharmacogenetic models that are significantly predictive of various drug response phenotypes (e.g., drug resistance, drug clearance, drug toxicity, disease response) in children with ALL. The large number of candidate loci and the relatively small number of patients illustrate the fact that larger sample sizes are required to definitively establish these polygenic models. The fact that there were significant race/genotype interactions, such that predictions differed in whites vs blacks, highlights the need for adequate numbers of patients within racial and ethnic groups to allow differential analysis of genotypic predictors after adjusting for confounding demographic factors in pharmacogenetic studies via stratified design and analyses.


Recruitment information / eligibility

Status Recruiting
Enrollment 8800
Est. completion date March 2034
Est. primary completion date December 2033
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group N/A and older
Eligibility Inclusion Criteria: - Any patients under evaluation/treatment at St. Jude Children's Research Hospital (SJCRH) - Parents or family members of St. Jude patients - Non patient volunteers - All study subjects must provide informed consent for participation - Assent/Consent of the patient (parent) must be provided prior to attempts made by investigators to enroll a family member of a SJCRH patient Exclusion Criteria:

Study Design


Related Conditions & MeSH terms


Locations

Country Name City State
United States St. Jude Children's Research Hospital Memphis Tennessee

Sponsors (3)

Lead Sponsor Collaborator
St. Jude Children's Research Hospital National Cancer Institute (NCI), National Institute of General Medical Sciences (NIGMS)

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary To investigate whether genetic polymorphisms in genes encoding proteins involved in the metabolism or effects of drugs or environmental agents influence the disposition or effects of these xenobiotic substrates. 28 years
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