Thiopurine Methyltransferase Polymorphisms Evaluation

January 10, 2013 updated by: Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Evaluation of Thiopurine Methyltransferase Polymorphisms in the Hispanic Population

The purpose of the study is to determine the frequency of allelic variants in TPMT in the Hispanic population and to compare the frequency in the Hispanic population with the Caucasian Population.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

Detailed Description

Relatively few studies have been performed evaluating the variant allele frequencies in Spanish populations. To date, no studies evaluating the TPMT variant allele frequency in the Hispanic population have been reported. Hispanics are a growing part of the patient population treated in the United States. Characterization of the proportion of patients with variant genotypes in this population is important since Hispanic children represent a significant proportion of children being treated with thiopurines.

A single 3 cc heparinized blood sample will be obtained for TPMT genotyping. The sample will be obtained either simultaneously with a clinical sample, at the time of an otherwise medically indicated intravenous catheter placement or scavenged from excess blood remaining following clinical laboratory testing.

Study Type

Observational

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Texas
      • Houston, Texas, United States, 77030
        • Baylor College of Medicine, Texas Children's Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

No older than 18 years (Child, Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • All Hispanic children and adolescents diagnosed and treated at Texas Children's Cancer Center within the last 5 years for malignant diseases/cancer and non-malignant hematological disorders that necessitate chemotherapy
  • All Hispanic children and adolescents who will be treated at Texas Children's Center for malignant diseases/cancer and non-malignant hematological disorders that will necessitate chemotherapy.

Exclusion Criteria:

  • Any child or adolescent registering at Texas Children's Cancer Center and not requiring any form of therapy.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 2004

Study Registration Dates

First Submitted

September 9, 2005

First Submitted That Met QC Criteria

September 9, 2005

First Posted (Estimate)

September 14, 2005

Study Record Updates

Last Update Posted (Estimate)

January 11, 2013

Last Update Submitted That Met QC Criteria

January 10, 2013

Last Verified

January 1, 2013

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • PPRU-10728

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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