AzTrials
AzTrials

Brain CancerNCT00505141

Urban Environmental Exposures and Childhood Cancer

An observational study of Brain Cancer and Acute Lymphoblastic Leukemia, run by Georgetown University at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

The Environmental Protection Agency has recognized that organophosphorus pesticides require close regulation and continued monitoring for human health effects and some (e.g chlorpyrifos) have been phased-out from the consumer market due to the special risk that it posed for children. Read more about this study

Who is it for?
Ages Up to 18 yearsHealthy volunteers can take part
Conditions the study is for
Brain Cancer, Acute Lymphoblastic Leukemia
How many people
Not given
Where
1 siteUnited States
Study dates
Sep 2004to Feb 2006
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Up to 18 years
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult

Who may be able to join

  • Only newly diagnosed cases of ALL and brain cancers (i.e. diagnosed within the previous 12 months) under the age of 18 years are eligible for this study. These will include live born infants at term or born prematurely, and any cases we are able to ascertain from pediatric hematology records.
  • Healthy controls of similar age will be recruited.
  • The children must have a parent available to be interviewed who speaks English or Spanish well enough to understand the questionnaire.

Who cannot join

  • Subjects with a diagnosis of Down syndrome or other chromosomal disorder, single gene disorder, or recognized multi-organ syndrome will be excluded.
  • Non-residents of Maryland, the District of Columbia, and Virginia will be excluded; this will avoid the inclusion of out-of-state case families who traveled a long distance for clinical care, where control sampling would be problematic.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Children's National Medical Center

    Washington D.C., District of Columbia, 20010

Other trials in United States

About this study

Official title: Case-Control Study of Urban Environmental Effects on Childhood Leukemia and Brain Cancer

The Environmental Protection Agency has recognized that organophosphorus pesticides require close regulation and continued monitoring for human health effects and some (e.g chlorpyrifos) have been phased-out from the consumer market due to the special risk that it posed for children. There is growing evidence in support of the association between pesticide exposure and childhood leukemia. Studies of pesticides and their association with childhood cancer have been limited by study designs, self-reporting and lack of biological measurements. While several large studies in California found little evidence of an association between agricultural pesticide use and childhood leukemia, these results are in contrast with the associations observed with household exposures to pesticides. The real association may depend on timing of exposure, type of pesticide, dose and pathway of exposure. Furthermore, some persons may be more susceptible to the effects of specific pesticides due to inherited mutations in their detoxification pathways.

We are conducting a pilot study to test the hypothesis that environmental exposure to pesticides in pregnancy or during the neonatal period, together with genetic susceptibility may lead to childhood ALL or brain cancer. The study is a multicenter, case-control study, based on collaboration between clinical researchers and basic science research to evaluate the risk for childhood cancer in relation to measured levels of pesticides (and their metabolites) and genetic polymorphisms. Biomarkers will be used to examine the risks of chronic low-dose exposures, and to characterize relationships between specific pesticides, childhood cancer and genetic susceptibility.

Hypothesis: Interaction between environmental factors (pesticides) and maternal or child genetic polymorphisms may lead to childhood cancer.

Keywords
Childhood Brain Cancer, Childhood Acute Lymphoblastic Leukemia
Medical subject headings
Brain Neoplasms, Precursor Cell Lymphoblastic Leukemia-Lymphoma

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted23 Jul 2007 (estimated)
  2. Study startSep 2004
  3. Study completionFeb 2006

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Other
IDs, dates and publications
ClinicalTrials.gov ID
NCT00505141
Sponsor's protocol ID
2004-278
Status last verified
Jul 2007
First submitted
20 Jul 2007
Last updated
23 Jul 2007
Results posted
No

Questions about this trial

What is this clinical trial studying?

An observational study of Brain Cancer and Acute Lymphoblastic Leukemia, run by Georgetown University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 23 Jul 2007. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Jul 2007.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in