The Division of Cancer Prevention and Control (DCPC), under extramural contracts to 10 U.S. clinical centers, is evaluating the effectiveness of screening for prostate, lung, colorectal and ovarian cancer (The PLCO Trial). The NCI Executive Committee approved the expansion of the PLCO Trial to collect additional materials and to conduct additional studies. About 74,000 men and 74,000 women, aged 55-74 years, are being randomized on a 50/50 basis into screening or usual care arms. Additional blood will be collected from screened subjects and saliva for buccal cells from control subjects. Pathologic tissues will be obtained for cases that develop cancer or selected related diseases (e.g., colon polyps, benign prostatic hyperplasia). Additional questionnaire-based risk information will also be collected. Genetic, biochemical and questionnaire-based risk information will be related to the development of cancer and other diseases in this population. Volunteers who provide samples for these studies will not routinely receive their individual results from the Additional Investigation. Subjects requesting such information, however, will be provided their test results. This protocol Review Application is for the collaboration of intramural scientists in the Division of Cancer Epidemiology and Genetics (DCEG) in the Additional Studies.
| Estimated Enrollment: |
156000 |
| Study Start Date: |
July 1997 |
The Division of Cancer Prevention and Control (DCPC), under extramural contracts to 10 U.S. clinical centers, is evaluating the effectiveness of screening for prostate, lung, colorectal and ovarian cancer (The PLCO Trial). The NCI Executive Committee approved the expansion of the PLCO Trial to collect additional materials and to conduct additional studies. About 74,000 men and 74,000 women, aged 55-74 years, are being randomized on a 50/50 basis into screening or usual care arms. Additional blood will be collected from screened subjects and saliva for buccal cells from control subjects. Pathologic tissues will be obtained for cases that develop cancer or selected related diseases (e.g., colon polyps, benign prostatic hyperplasia). Additional questionnaire-based risk information will also be collected. Genetic, biochemical and questionnaire-based risk information will be related to the development of cancer and other diseases in this population. Volunteers who provide samples for these studies will not routinely receive their individual results from the Additional Investigation. Subjects requesting such information, however, will be provided their test results. This protocol Review Application is for the collaboration of intramural scientists in the Division of Cancer Epidemiology and Genetics (DCEG) in the Additional Studies.
Purpose
