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Cognitive Function And Fatigue In Cancer Patients After Chemotherapy
Funder
National Health and Medical Research Council
Funding Amount
$246,412.00
Summary
Many patients complain of tiredness after chemotherapy and some experience problems with memory, concentration, thinking and other aspects of mental function. Studies have confirmed that some women with breast cancer suffer these effects after chemotherapy and that they can last a long time. Although generally subtle they can affect quality of life and ability to function. Little is known about the causes of these side-effects. Possible causes include blood clotting in small vessels of the brain ....Many patients complain of tiredness after chemotherapy and some experience problems with memory, concentration, thinking and other aspects of mental function. Studies have confirmed that some women with breast cancer suffer these effects after chemotherapy and that they can last a long time. Although generally subtle they can affect quality of life and ability to function. Little is known about the causes of these side-effects. Possible causes include blood clotting in small vessels of the brain and release of molecules called cytokines, as a result of chemotherapy. Hormonal changes and induced menopause might also contribute to these effects in women. Here we propose to evaluate men and women who either receive chemotherapy to prevent recurrence of colorectal cancer, or who are followed without such treatment after surgery. Patients will complete a questionnaire that assesses their level of fatigue and participate in tests of mental functioning, before, during and at intervals after treatment. Possible causes of fatigue and cognitive problems will be studied by measuring products in the blod that indicate blood clotting, levels of cytokine molecules that might cause these symptoms and levels of sex hormones in both men and women. This may lead to further studies to help reduce the burden of fatigue and cognitive impairment from chemotherapy. The goals of our study are to provide comphrehensive information about important side-effects of cancer treatment and to examine the mechanisms that may cause them. This information is important for supporting people living with cancer and for subsequent research to develop interventions that will promote healthy lifestyles during and after treatment for cancer.Read moreRead less
APC Mutation And The Initiation Of Colorectal Cancer
Funder
National Health and Medical Research Council
Funding Amount
$606,267.00
Summary
Colorectal (or bowel) cancer is a major health problem in Australia. At present it is the most common cancer, approximately 1 in 21 Australians will develop the disease in his-her lifetime. The risk of bowel cancer increases with age, with the risk rising progressively and sharply from the age of 50. Current therapies for advanced colorectal cancer are not very effective. Mortality from colorectal cancer is high, being second only to lung cancer as the leading cause of cancer death in Australia. ....Colorectal (or bowel) cancer is a major health problem in Australia. At present it is the most common cancer, approximately 1 in 21 Australians will develop the disease in his-her lifetime. The risk of bowel cancer increases with age, with the risk rising progressively and sharply from the age of 50. Current therapies for advanced colorectal cancer are not very effective. Mortality from colorectal cancer is high, being second only to lung cancer as the leading cause of cancer death in Australia. The development of colorectal cancer is affected by both genetic and environmental factors. Colorectal cancer progresses through a number of distinct pathological stages. This is thought to be the result of the progressive aquisition of mutations in genes that normally ensure a balance between cell growth and cell death. Mutations in a gene known as APC are associated with the very early stages of tumour formation in at least 80% of colorectal tumours. Our research is aimed at understanding how alterations in APC influence the behaviour and growth of colonic cells. We have developed a novel system where normal mouse colon can be maintained and grown for up to 2 weeks in a Petri dish. Alterations in the APC gene and other colon cancer genes will be introduced into the normal epithelial cell lining and the effects on the growth and behaviour of the cells in organ culture will be analysed. Our hypothesis is that changes in the APC gene affects the way cells migrate, divide and move. This work should improve our knowledge of the cellular changes that occur during tumour initiation in the bowel and aims to contribute to the design of new therapies for early intervention in colon cancer.Read moreRead less
Molecular Identification Of Causative Genetic And Epigenetic Alterations That Induce And Promote Colorectal Cancer
Funder
National Health and Medical Research Council
Funding Amount
$381,821.00
Summary
The majority of mouse models currently employed to study colorectal cancer have two failings. The first is that they tend to focus on small intestinal cancers rather than colorectal cancers. It is important to note that small intestinal cancers are in the minority of gastrointestinal cancers in humans. The second problem is that the genetic lesions introduced into mice are mostly in all cells throughout development. This is a poor representation of the random nature of genetic changes that under ....The majority of mouse models currently employed to study colorectal cancer have two failings. The first is that they tend to focus on small intestinal cancers rather than colorectal cancers. It is important to note that small intestinal cancers are in the minority of gastrointestinal cancers in humans. The second problem is that the genetic lesions introduced into mice are mostly in all cells throughout development. This is a poor representation of the random nature of genetic changes that underpin the probable cause of colon cancer. We therefore propose to genetically engineer unique mouse models that focus on colon cancer to most closely replicate the situation in human disease. These models will then be available to others and us to develop and test therapies to prevent and-or treat colorectal cancer that will ultimately be used in patients.Read moreRead less
The Breast Cancer Biospecimen Resource will consist of stored samples of the majority of newly diagnosed breast cancers in NSW and through the Australian and New Zealand Breast Cancer Trials Group together with accurate, prospectively tracked clinical data on each specimen. This facility will serve as a model for extension of similar procedures to other common Australian cancers including cancers of the lung, bowel, prostate and melanoma. Research that is facilitated by this Resource holds real ....The Breast Cancer Biospecimen Resource will consist of stored samples of the majority of newly diagnosed breast cancers in NSW and through the Australian and New Zealand Breast Cancer Trials Group together with accurate, prospectively tracked clinical data on each specimen. This facility will serve as a model for extension of similar procedures to other common Australian cancers including cancers of the lung, bowel, prostate and melanoma. Research that is facilitated by this Resource holds real promise for improving patient selection for treatment. This will return a significant humanitarian and cost saving benefit. In addition this advance would also maximise the benefit of population mammographic screening.Read moreRead less
Proteomic Screening For Apoptotic Markers In Breast Cancer
Funder
National Health and Medical Research Council
Funding Amount
$531,696.00
Summary
The induction of apoptosis, or programmed cell death, is a key factor in the response of tumours to chemotherapeutic agents and ionising radiation; therefore biological markers that predict the clinical outcome to these therapies are needed. Over the past 2 years, our laboratory has developed techniques of protein analysis to evaluate changes in proteins during apoptosis caused by chemotherapeutic agents. Preliminary protein profiling studies of apoptosis induction in human breast cancer cell li ....The induction of apoptosis, or programmed cell death, is a key factor in the response of tumours to chemotherapeutic agents and ionising radiation; therefore biological markers that predict the clinical outcome to these therapies are needed. Over the past 2 years, our laboratory has developed techniques of protein analysis to evaluate changes in proteins during apoptosis caused by chemotherapeutic agents. Preliminary protein profiling studies of apoptosis induction in human breast cancer cell lines showed time-dependent decreases in two proteins, identified as S100A6 and ubiquitin. Both are known to be important in cell function. In the proposed project we will build on our preliminary findings to provide important new information central to the understanding of cancer cell biology and apoptosis in addition to evaluating the ability of anti-cancer treatments to induce apoptosis. Using a combination of protein analysis technologies, this project has the potential to provide reliable and novel biomarkers which will indicate the efficacy and selectivity of anti-cancer treatments in inducing tumour cell death. The knowledge gained in this project will aid clinical assessment of the response to cancer treatment(s) in patients in the form of specific screening assays, and may result in identification and development of effective new agents for cancer treatment and prevention. Furthermore, the outcomes of this project will increase our understanding of fundamental cancer cell biology and apoptosis.Read moreRead less
mTOR signalling in serous ovarian cancer. Serous ovarian cancer is the most aggressive and lethal gynaecological cancer in Australian women. Activation of Mammalian Target of Rapamycin (mTOR) is frequently observed and associated with poor prognosis in ovarian cancer patients. However, the mechanisms dysregulating mTOR in the pathogenesis of ovarian cancer are unknown. In preliminary studies, deletion of genes regulating mTOR signalling in up to 60 per cent of human serous ovarian cancer patien ....mTOR signalling in serous ovarian cancer. Serous ovarian cancer is the most aggressive and lethal gynaecological cancer in Australian women. Activation of Mammalian Target of Rapamycin (mTOR) is frequently observed and associated with poor prognosis in ovarian cancer patients. However, the mechanisms dysregulating mTOR in the pathogenesis of ovarian cancer are unknown. In preliminary studies, deletion of genes regulating mTOR signalling in up to 60 per cent of human serous ovarian cancer patients was observed. This project will provide mechanistic details of involvement of mTOR signalling in pathogenesis of the serous ovarian carcinoma, and develop a rationale for targeting mTOR pathway in these patients. Read moreRead less
Total Laparoscopic Hysterectomy (TLH) Vs. Total Abdominal Hysterectomy (TAH) For The Treatment Of Endometrial Cancer
Funder
National Health and Medical Research Council
Funding Amount
$809,860.00
Summary
The LACE study is a clinical trial comparing two types of surgery for women with early-stage cancer of the inner lining of the uterus, known as endometrial cancer. Treatment for endometrial cancer involves removal of the uterus, tubes, ovaries and lymph nodes. Traditionally this has been performed by open surgery via an abdominal incision. Open surgery is effective for endometrial cancer, but it is highly invasive, resulting in visible scarring, tissue damage, blood loss and a fairly high risk o ....The LACE study is a clinical trial comparing two types of surgery for women with early-stage cancer of the inner lining of the uterus, known as endometrial cancer. Treatment for endometrial cancer involves removal of the uterus, tubes, ovaries and lymph nodes. Traditionally this has been performed by open surgery via an abdominal incision. Open surgery is effective for endometrial cancer, but it is highly invasive, resulting in visible scarring, tissue damage, blood loss and a fairly high risk of complications. Laparoscopic surgery, commonly referred to as keyhole surgery, is a new approach to removing the uterus, tubes, ovaries and lymph nodes. Preliminary results from this less invasive surgery have been extremely encouraging. Laparoscopic surgery is practical and safe in treating endometrial cancer, while also resulting in less tissue damage, lower blood loss, less pain and a shorter recovery period in hospital. The LACE study aims to give definitive answers about the results offered by laparoscopic surgery in treating women with early stage endometrial cancer. The primary aim is to investigate whether the treatment of endometrial cancer using laparoscopic surgery is as good as that using open surgery. Secondary aims look at whether laparoscopic surgery provides more benefits compared to open surgery for endometrial cancer, such as: - improvements in the quality of life post-surgery, - reduced number of early and late surgery-related complications, - shorter stays in hospital, - fewer blood transfusions required, - less pain post-surgery, and hence fewer pain-killers. The LACE study is already under way, with recruitment on target for Stage 1. This application seeks funding for Stage 2, to expand recruitment from 2007. The outcomes of the trial will have a significant bearing on the future choice of treatment for endometrial cancer. Therefore the study will impact many patients around the world, including ~2000 women every year in Australia.Read moreRead less
Pathophysiology Of Oxaliplatin-induced Nerve Dysfunction And Neuropathy
Funder
National Health and Medical Research Council
Funding Amount
$281,255.00
Summary
When treating patients diagnosed with cancer, nerve dysfunction is a common complication of chemotherapy, particularly with oxaliplatin. Neurological symptoms develop in up to 90% of patients following oxaliplatin treatment. Neurotoxicity is a key factor in determining the dosage and frequency of current chemotherapeutic agants. Oxaliplatin therapy results in disabling neurological effects. Onset of neuropathy can be relatively fast or in other cases may develop months after therapy has been com ....When treating patients diagnosed with cancer, nerve dysfunction is a common complication of chemotherapy, particularly with oxaliplatin. Neurological symptoms develop in up to 90% of patients following oxaliplatin treatment. Neurotoxicity is a key factor in determining the dosage and frequency of current chemotherapeutic agants. Oxaliplatin therapy results in disabling neurological effects. Onset of neuropathy can be relatively fast or in other cases may develop months after therapy has been completed. The other chief problems encountered during chemotherapy can be overcome: nausea and vomiting can be treated; myelosuppression can be reversed. End organ toxicity such as neuropathy cannot be controlled. Despite the high incidence of neuropathy due to chemotherapy, the mechanisms involved remain poorly understood, particularly with newer therapies. The aim of the present study is to measure nerve function in oncology patients treated with oxaliplatin using a novel protocol, attempting ultimately to identify aspects of dysfunction that correlate with clinical abnormalities, so helping to pin-point the mechanisms responsible for neuropathy. Once identified, management strategies can be developed to better target the prevention and treatment of neuropathy in oncology patients treated with chemotherapy.Read moreRead less