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NCT01547858

Studying Blood Toxicity in Workers Exposed to Formaldehyde

Completed Last updated 16 November 2020
What this trial tests

trial in Blood in 708 participants. Completed in 12 November 2020.

Timeline
9 February 2012
Primary endpoint
30 May 2013
12 November 2020

Quick facts

Lead sponsorNational Cancer Institute (NCI)
StatusCompleted
Study typeOBSERVATIONAL
Enrollment708
Start date9 February 2012
Primary completion30 May 2013
Estimated completion12 November 2020
Sites1 location across China

Conditions studied

Sponsor

National Cancer Institute (NCI)

Who can join

Adults 18 to 60, any sex, with Blood or Chemical Industry. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Background: \- Formaldehyde has many uses in industry and medicine. However, exposure to formaldehyde has been associated with increased risk for myeloid leukemia. There are still questions about how the chemical reacts with bone marrow to increase this cancer risk. Some smaller studies have looked at how it affects stem cells, which are found in bone marrow. Researchers want to develop a much larger study of workers in China. The study will look at different levels of formaldehyde exposure. It will focus on how the chemical affects the blood cells and bone marrow. Objectives: \- To study the effects of formaldehyde exposure on blood cells and bone marrow. Eligibility: \- Individuals between 18 and 60 years of age who work in selected factories in Guangdong Province, China. Design: * Participants will be screened with a physical exam and medical history. They will also be screened with a work history. Those who have been exposed to benzene, butadiene, styrene, or radiation will not be included. * Participants will be studied based on their regular formaldehyde exposure level. One-third will be those exposed to more than 1 part per million (ppm) of the chemical. One-third will be those exposed to 0.3 to 1 ppm. A control group will have no exposure to formaldehyde or any other known toxic chemical. * Participants will provide blood and cheek swab samples. They will also answer questions about their work habits. * To look at chemical exposure levels, participants will wear a small monitor to work on 3 different days. They may provide additional blood and cell samples as directed. * No treatment will be provided as part of this study.

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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