Sunday, August 19, 2012
A Nonsynonymous Polymorphism inIRS1 Modifies Risk of Developing Breast and Ovarian Cancers inBRCA1 and Ovarian Cancer
A Nonsynonymous Polymorphism inIRS1 Modifies Risk of Developing Breast and Ovarian Cancers inBRCA1 and Ovarian Cancer inBRCA2 Mutation Carriers
Abstract
Background: We previously reported significant associations between genetic variants in insulin receptor substrate 1 (IRS1) and breast cancer risk in women carrying BRCA1 mutations. The objectives of this study were to investigate whether the IRS1 variants modified ovarian cancer risk and were associated with breast cancer risk in a larger cohort of BRCA1 and BRCA2mutation carriers......
.....impact of ovarian cancer screening
Abstract
Ongoing ovarian cancer screening trials are investigating the efficacy of a two-step screening strategy using currently available blood and imaging tests [CA125 and transvaginal sonography (TVS)]. Concurrently, efforts to develop new biomarkers and imaging tests seek to improve screening performance beyond its current limits. This study estimates the mortality reduction, years of life saved, and cost-effectiveness achievable by annual multimodal screening using increasing CA125 to select women for TVS, and predicts improvements achievable by replacing currently available screening tests with hypothetical counterparts with better performance characteristics. An existing stochastic microsimulation model is refined and used to screen a virtual cohort of 1 million women from ages 45 to 85 years. Each woman is assigned a detailed disease course and screening results timeline. The preclinical behavior of CA125 and TVS is simulated using empirical data derived from clinical trials. Simulations in which the disease incidence and performance characteristics of the screening tests are independently varied are conducted to evaluate the impact of these factors on overall screening performance and costs. Our results show that when applied to women at average risk, annual screening using increasing CA125 to select women for TVS achieves modest mortality reduction (∼13%) and meets currently accepted cost-effectiveness guidelines. Screening outcomes are relatively insensitive to second-line test performance and costs. Identification of a first-line test that does substantially better than CA125 and has similar costs is required for screening to reduce ovarian mortality by at least 25% and be reasonably cost-effective.Cancer Prev Res; 5(8); 1015–24. ©2012 AACR.
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ScienceDirect.com - Gynecologic Oncology Case Reports - Management of a skin metastasis in a patient with advanced ovarian cancer
Management of a skin metastasis in a patient with advanced ovarian cancer
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