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Risk Factors, Screening, Prophylaxis And Outcomes In Individuals From Breast Cancer Families: KConFab Follow-Up Study
Funder
National Health and Medical Research Council
Funding Amount
$510,675.00
Summary
Having a strong family history of breast cancer is one of the most important risk factors for the disease. Two major genes, BRCA1 and BRCA2, have been identified which, when abnormal, result in an inherited tendency towards developing breast cancer. Women with a strong family history of breast cancer can undergo testing for these gene abnormalities via Family Cancer Centres around Australia. However, once a gene abnormality is found, little is known about the best ways to prevent cancer or detec ....Having a strong family history of breast cancer is one of the most important risk factors for the disease. Two major genes, BRCA1 and BRCA2, have been identified which, when abnormal, result in an inherited tendency towards developing breast cancer. Women with a strong family history of breast cancer can undergo testing for these gene abnormalities via Family Cancer Centres around Australia. However, once a gene abnormality is found, little is known about the best ways to prevent cancer or detect it early. The Kathleen Cuningham Consortium for Research into Familial Aspects of Breast Cancer (kConFab) has been recruiting families with exceptionally strong histories of breast cancer since 1997. kConFab is funded to collect epidemiological information and biological specimens on such individuals only at the time of their initial recruitment. In 2000 the NHMRC recognised the importance of undertaking clinical follow-up of this precious cohort of individuals, and provided funding through a 3 year project grant to commence the first round of 3 yearly follow-up on this cohort (NHMRC Project Grant #145684). The first 2 years of this follow-up has been completed successfully and the current is application is for a renewal of funding (to commence in 2004) to enable us to undertake further follow-up of the now much larger cohort. In the short term we will examine the screening and preventive surgery behaviours of high risk women within this study to determine whether they are optimal. The ultimate aim of this long term follow-up of individuals in kConFab is to determine what factors impact on the development of cancer in well individuals with a genetic predisposition to breast cancer.Read moreRead less
Identification And Molecular Characterisation Of High-risk Premalignant Breast Lesions
Funder
National Health and Medical Research Council
Funding Amount
$560,382.00
Summary
Understanding the full repertoire of genetic events that underlie the development of breast cancer may allow development of prevention strategies. This study will analyse genetic data of benign breast lesions that may be non-obligate precursors of breast cancer. Importantly, clinical management of these lesions is difficult. A reliable method of predicting the risk of progression to cancer would be a significant advance, with benefits to individual patients and also the health system.
Modulation Of Cytoskeletal Structure By Progesterone Receptor Isoforms
Funder
National Health and Medical Research Council
Funding Amount
$337,650.00
Summary
Ovarian hormones are fundamental regulators of normal cell growth and differentiation, and crucial to the development and progression of breast cancer. We have recently shown that the ovarian hormone progesterone can influence the expression of proteins in the cell scaffolding, known as the cytoskeleton. The cytoskeleton is responsible for maintaining cell shape, and there is growing evidence that alterations in the cytoskeleton can actually cause normal cells to become cancerous. We have shown ....Ovarian hormones are fundamental regulators of normal cell growth and differentiation, and crucial to the development and progression of breast cancer. We have recently shown that the ovarian hormone progesterone can influence the expression of proteins in the cell scaffolding, known as the cytoskeleton. The cytoskeleton is responsible for maintaining cell shape, and there is growing evidence that alterations in the cytoskeleton can actually cause normal cells to become cancerous. We have shown that progesterone affects the levels of a cytoskeletal protein called tropomyosin, which plays a pivotal role in cell shape maintenance. We have hypothesised that this effect may be important in the cell shape changes in breast cancer that lead to metastasis. In this grant, we will investigate the role of the progesterone receptor in controlling the expression of the cytokeleton; we will investigate whether cell shape changes caused by progesterone cause more aggressive behaviour in breast cancer cells and we will determine whether there are changes in cytokeletal proteins in breast tumours. This will provide a rational basis for further studies aimed at delineating the significance of hormonal regulation of cell architecture.Read moreRead less
KConFab Follow-Up Project: A Prospective Study Of Non-Genetic Risk Modifiers In Women At High Risk For Breast Cancer
Funder
National Health and Medical Research Council
Funding Amount
$726,351.00
Summary
Having a strong family history for breast cancer is one of the most important risk factors for the disease. Two major genes, BRCA1 and BRCA2, have been identified which, when abnormal, result in an inherited tendency towards developing breast cancer. Women with a strong family history of breast cancer can undergo testing for these genes via Family Cancer Centres around Australia. However in only about 20% of families with a strong family history will a gene abnormality be discovered. Women from ....Having a strong family history for breast cancer is one of the most important risk factors for the disease. Two major genes, BRCA1 and BRCA2, have been identified which, when abnormal, result in an inherited tendency towards developing breast cancer. Women with a strong family history of breast cancer can undergo testing for these genes via Family Cancer Centres around Australia. However in only about 20% of families with a strong family history will a gene abnormality be discovered. Women from families in which no abnormality has been discovered remian at high risk because they may have an abnormality in an as yet undiscovered gene which can't yet be tested for. Little is currently known bout the best ways to prevent cancer in women who are at high risk. The Kathleen Cuningham Consortium for Research Into Familial Aspects of Breast Cancer (kConFab) has been recruiting families with exceptionally strong hostories of breast cancer since 1997. kConFab is funded to collect risk factor information on such individuals only at the time of their initial recruitment. In 2000 and again in 2003, the NHMRC recognised the importance of undertaking clinical follow-up of this precious cohort of individuals and provided funding through consecutive project grants to do so. The current application is to enable us to continue that follow-up for a further 5 years. As well as continuing the follow-up, we will use the data already collected to examine the effect of prophylactic surgery, breastfeeding and use of the oral contraceptive pill as well as cigarette smoking and alcohol use on breast cancer risk in high-risk women. The results of this study will provide high-risk women with better information about what modifications they might make to their lifestyles to reduce their cancer risk.Read moreRead less
Role Of Cyclin E2 In Hormone-responsive Breast Cancer
Funder
National Health and Medical Research Council
Funding Amount
$328,194.00
Summary
The female hormone estrogen stimulates the growth of breast cancers by promoting cell reproduction. We have found that cyclin E2, which is part of the machinery that controls cell reproduction, responds to estrogen. Since abnormally high levels of cyclin E2 are linked with earlier relapse in breast cancer, we wish to understand what role it plays in estrogen action and in breast cancer, how its levels are controlled, and whether too much cyclin E2 interferes with drugs that block estrogen action
Clinical Outcomes In Individuals With An Inherited Predisposition To Breast Cancer
Funder
National Health and Medical Research Council
Funding Amount
$606,015.00
Summary
Genes have recently been identified which, when abnormal, result in an inherited tendency towards developing breast cancer (BC). It is now possible to undergo testing for abnormalities in these genes. However, there is little known about the best ways to prevent cancer or detect it early in individuals with such a gene abnormality. In addition, it is possible that BCs occuring in women with a gene abnormality might behave differently (have a different prognosis and thus require different treatme ....Genes have recently been identified which, when abnormal, result in an inherited tendency towards developing breast cancer (BC). It is now possible to undergo testing for abnormalities in these genes. However, there is little known about the best ways to prevent cancer or detect it early in individuals with such a gene abnormality. In addition, it is possible that BCs occuring in women with a gene abnormality might behave differently (have a different prognosis and thus require different treatment) from other BCs. Answers to these important questions are essential for women to be able to make informed decisions about how best to reduce their risk of developing, or dying from, BC. This study will examine the clinical outcomes of individuals (both those who have not yet developed cancer and those who have) with an inherited tendency to BC. The study has 2 components; each builds on one of 2 existing Australian studies of hereditary BC 1) Is the likely clinical outcome (prognosis) different for BC patients with a gene abnormality compared to those without? The cancer and treatment details of BC patients in Melbourne and Sydney who are already enrolled in the Australian Breast Cancer Family Study will be examined to determine whether those with a gene abnormality have a better or worse outcome than those without. 2) What factors impact on the clinical outcome (development of cancer) in well individuals with an inherited tendency to BC? An Australia-wide study of inherited BC (kConFab) has recruited families with a strong family history of BC. The family history, lifestyle, exposure to female hormones, cancer screening and preventive surgery details of all individuals in the study will be collected 3 years following study entry. Ultimately this information should help determine how best to prevent cancer in such individuals.Read moreRead less
A Randomised Phase III Study Of Radiation Doses And Fractionation Schedules For Non-low Risk Ductal Carcinoma In Situ Of The Breast
Funder
National Health and Medical Research Council
Funding Amount
$658,419.00
Summary
After surgery to remove ductal carcinoma in situ (DCIS), a pre-invasive form of breast cancer, radiotherapy to the breast decreases the risk of recurrence. The study investigates if a higher radiation dose to the tumour bed improves tumour control, and if a shorter course of radiotherapy is as effective as the standard longer course. It also assesses quality of life consequences of treatment and tests biomarkers that may predict the risk of recurrence in individual patients.
PRECISION: Personalised Risk Evaluation In DCIS, International
Funder
National Health and Medical Research Council
Funding Amount
$1,392,930.00
Summary
Ductal carcinoma in situ (DCIS) of the breast is a common diagnosis with problematic clinical management. This study brings together an international consortium to identify and validate clinical biomarkers of recurrence.
Progesterone Signalling In Normal And Malignant Breast Relies On Chromosomal Positioning Of Progesterone Receptor
Funder
National Health and Medical Research Council
Funding Amount
$569,346.00
Summary
The cell nucleus carries genetic information that directs cell function. The nucleus is organised into compartments, which are altered in breast cancer, leading to altered function. The ovarian hormone progesterone acts via a receptor, which clumps into foci in the nucleus when active. In cancers, this clumping is disrupted. In this project we will work out how these foci control cell function, and how this leads to the specific functions of progesterone in normal breast and breast cancers.