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NCT00481611

Cancer Markers Associated With Occupational Exposure to Trichloroethylene

Completed Last updated 3 November 2020
What this trial tests

trial in Industrial Hygiene in 125 participants. Completed in 30 October 2020.

Timeline
15 June 2006
Primary endpoint
30 October 2020
30 October 2020

Quick facts

Lead sponsorNational Cancer Institute (NCI)
StatusCompleted
Study typeOBSERVATIONAL
Enrollment125
Start date15 June 2006
Primary completion30 October 2020
Estimated completion30 October 2020
Sites1 location across China

Conditions studied

Sponsor

National Cancer Institute (NCI)

Who can join

Adults 18 to 50, any sex, with Industrial Hygiene or Epidemiology. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Background: * Trichloroethylene (TCE) is a solvent used in many medical and industrial processes. * TCE is a carcinogen (causes cancer) in rats, but its carcinogenicity in humans is unclear. There is some evidence of increased liver and kidney cancers and of an association with non-Hodgkin lymphoma in studies of workers exposed to TCE. * The carcinogenicity and regulation of TCE is a matter of continuing debate. Objectives: * To determine if TCE exposure is associated with higher levels of genetic aberrations in certain white blood cells called lymphocytes. * To determine if TCE exposure affects lymphocyte subsets and levels of certain hormones called cytokines. Eligibility: Workers exposed to two different levels of exposure to TCE and unexposed workers in Guangdong Province, China. Design: * 45 workers exposed to more than 25 parts per million (ppm) TCE, 30 workers exposed to from 10 to less than 25 ppm TCE and 45 unexposed workers will be enrolled. * Subjects wear small instruments at work that measure chemicals in the air for 1 or 2 days during the 2-week study period. Exposed workers also wear several small skin patches on one of the two days. * Subjects provide blood and urine samples. * Subjects answer a questionnaire about work, smoking and drinking, use of medicines, medical history, general health, hobbies, and exposure to radiation and exposure to various substances at home.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Data sources for this page

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