Quantifying Breast Cancer Over-diagnosis In An Organized Mammography Screening Program
Funder
National Health and Medical Research Council
Funding Amount
$92,314.00
Summary
While breast screening reduces breast cancer deaths by finding cancers earlier, it may also find cancers that would never have required treatment. Currently there is no clear consensus about the level over-diagnosis. This study will examine the extent of over-diagnosis by comparing the breast screening histories of women diagnosed with breast cancer and women who have not had breast cancer. Findings will inform policy on breast screening in Australia.
Automated Mammographic Measures That Predict Breast Cancer Risk
Funder
National Health and Medical Research Council
Funding Amount
$406,260.00
Summary
Mammographic density (MD) is one of the strongest predictors of breast cancer risk but its impractical measurement prevents its use in a clinical setting. An automated measure of MD would allow screening programs to identify and target women at higher risk of breast cancer which could lead to earlier diagnoses and better breast cancer outcomes. We aim to develop an automated measurement, maximized by its ability to predict breast cancer risk, and applicable to both film and digital mammograms.
We will conduct a study of more than 500 Australian female twin pairs in which one or both have had breast cancer. We will also study measured and unmeasured genetic and environmental causes of risk factors.
Exposure To High Dose Estrogens In Adolescence: Long Term Effects On Mammographic Breast Density
Funder
National Health and Medical Research Council
Funding Amount
$89,050.00
Summary
Breast density is a well established risk factor for breast cancer, and has been shown to be reversibly influenced by hormone exposures in adult life. As one of the important roles of sex hormones during puberty is mammary cell proliferation, it is plausible that exposures at this earlier life stage might have a sustained influence on breast tissue composition and density, and subsequent breast cancer risk. This project aims to increase our understanding of the influence of sex hormones in adole ....Breast density is a well established risk factor for breast cancer, and has been shown to be reversibly influenced by hormone exposures in adult life. As one of the important roles of sex hormones during puberty is mammary cell proliferation, it is plausible that exposures at this earlier life stage might have a sustained influence on breast tissue composition and density, and subsequent breast cancer risk. This project aims to increase our understanding of the influence of sex hormones in adolescence on breast cancer risk by testing the hypothesis that exposure to large doses of sex hormones during adolescence has long-term effects on mammographic density. This will be done by comparing the mammographic densities of women who were treated with high doses of estrogen for tall stature during adolescence with women who were similarly assessed for tall stature but not treated. No previous study in humans has examined the long-term effects on breast tissue of high dose estrogen exposure at this early life stage. This is not surprising, given the difficulty in finding a suitable exposed population. This cohort of women, assessed or treated for tall stature, provides us with a unique opportunity to examine these influences. This research will add to our understanding of the influence of sex hormones in adolescence on mammographic density and breast cancer risk. If hormonal factors in adolescence are shown to influence mammographic density, this may lead to new avenues for breast cancer prevention efforts that are targeted much earlier in life. This information may lead to new research directions examining adolescent hormonal exposures (both endogenous and exogenous) and their influence on breast tissue.Read moreRead less
Practice- And Policy-relevant Research In Skin Cancer Epidemiology, Prevention And Screening
Funder
National Health and Medical Research Council
Funding Amount
$483,402.00
Summary
This Fellowship will enable me to lead an internationally-competitive program of research in skin cancer epidemiology, prevention & screening that will lead to improved patient and population health through impacts on clinical practice and health policy. My aim is to lead paradigm-shifting contributions in: ? Genetic epidemiology of melanoma, ? Precision skin cancer prevention & screening, and ? Public health genomics for cancer prevention.
Risks And Benefits Of Breast Cancer Screening: BreastScreen WA Cohort Study Of Overdiagnosis And Breast Cancer Mortality
Funder
National Health and Medical Research Council
Funding Amount
$201,524.00
Summary
Overdiagnosis is the major downside of screening for breast cancer. This occurs when screening detects cancers that would not have caused symptoms in the woman's lifetime. This study aims to quantify the amount of overdiagnosis that occurs in the Australian breast cancer screening program (BreastScreen)
Testing And Treatment For Prostate Cancer In Australia: Epidemiology And Modelling
Funder
National Health and Medical Research Council
Funding Amount
$267,886.00
Summary
We aim to use observational data and mathematical modelling to investigate testing and treatment for prostate cancer in Australia. We will incorporate changes in prostate-specific antigen (PSA) testing and in clinical practice to investigate: a) over-diagnosis, being cancer cases diagnosed through PSA testing that would not have been otherwise diagnosed; b) the effect of PSA testing on prostate cancer mortality; and c) mortality and health care use under different PSA test scenarios.