- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00481793
Relationship of Genetic Differences to the Development of Chromosome Abnormalities
Germline Genetic Variation and Risk of Chromosome Aberrations Among Mayak Nuclear Workers
This is a collaborative study by the National Cancer Institute, Columbia University, and the Southern Urals Biophysics Institute in Russia. It will examine the relationship of differences in certain genes to the development of chromosomal abnormalities in workers at the Mayak nuclear production plant in Ozyorsk, Russia. This population was exposed to higher radiation doses from external and internal sources than those received by their counterparts in other countries or considered permissible today. If a risk relationship is found between genetic differences and chromosome abnormalities, the information might be useful in studies designed to examine how high radiation exposures cause cancer.
Radiation-exposed Mayak workers employed from 1948 to 1972 in the three Ozyorsk plants directly related to nuclear weapons production may be eligible for this study. They must have remained local residents in the area and estimates of their external and internal radiation exposures must be available.
Participants provide a blood sample for genetic studies and answer a questionnaire that includes demographic information and information about their family health history, history of benign tumors, if any, and history of smoking and alcohol consumption. Additional information is collected from patients' medical records.
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Study Overview
Status
Conditions
Detailed Description
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Ozyorsk, Russian Federation
- Southern Urals Biophysics Institute
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
- INCLUSION CRITERIA - EXPOSED POPULATION:
Individuals eligible to be included in the 'exposed' population include all those employed from 1948-1972 in the three plants directly related to nuclear-weapon production (nuclear reactor, radiochemical production plant, plutonium production plant), who have remained local residents, and who have estimates of their external gamma dose and internal plutonium exposure.
Some eligible workers did not have any plutonium exposure, but are still eligible to be included in the exposed sample due to their external radiation exposure.
All participants are required to be cancer-free at the time of enrollment.
EXCLUSION CRITERIA - EXPOSED POPULATION:
Individuals who have a medical history of radiation therapy or a blood transfusion within the previous year will be excluded.
As the sample size would not be adequate to examine their risk separately, Tartars and Bashkirs will not be included in the study.
INCLUSION CRITERIA - COMPARISON GROUP:
The comparison population will be drawn from current and former workers in the auxiliary plants (water treatment facility and mechanical repair plant) at the Mayak facility.
Included will be a stratified random sample of these workers who were employed from 1948-1972, who have remained local residents, and who have estimates of their external gamma dose.
Individuals selected will be frequency-matched according to age (5 year age groups) and gender to the exposed worker population.
Study Plan
How is the study designed?
Collaborators and Investigators
Sponsor
Publications and helpful links
General Publications
- Bonassi S, Hagmar L, Stromberg U, Montagud AH, Tinnerberg H, Forni A, Heikkila P, Wanders S, Wilhardt P, Hansteen IL, Knudsen LE, Norppa H. Chromosomal aberrations in lymphocytes predict human cancer independently of exposure to carcinogens. European Study Group on Cytogenetic Biomarkers and Health. Cancer Res. 2000 Mar 15;60(6):1619-25.
- Cardis E, Gilbert ES, Carpenter L, Howe G, Kato I, Armstrong BK, Beral V, Cowper G, Douglas A, Fix J, et al. Effects of low doses and low dose rates of external ionizing radiation: cancer mortality among nuclear industry workers in three countries. Radiat Res. 1995 May;142(2):117-32.
- Dupont WD, Plummer WD Jr. Power and sample size calculations for studies involving linear regression. Control Clin Trials. 1998 Dec;19(6):589-601. doi: 10.1016/s0197-2456(98)00037-3.
Study record dates
Study Major Dates
Study Start
Study Completion
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 999904215
- 04-C-N215
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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