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A study by RCSI University of Medicine and Health Sciences has provided greater insight into the role that hormones play in the development of breast cancer in patients. The novel findings could enhance the treatment for breast cancer, assisting clinicians in optimising individual patient care and improving overall survival rates for patients.

The study entitled "Steroid Ligands, the Forgotten Triggers of Nuclear Receptor Action; Implications for Acquired Resistance to Endocrine Therapy," is published in Clinical Cancer Research.

The hormone oestrogen has been proven to have an impact on breast cancer development and there is strong evidence that other hormones such as androgens may also play a role.

According to the WHO, 2.3 million women were diagnosed with breast cancer in 2020. Excluding skin cancer, breast cancer is the most common cancer in women in Ireland. 3,600 women every year in Ireland are diagnosed with breast cancer and the majority of these receive hormone therapy.

Patients can respond differently to hormone therapy with some having a more positive response than others. This study analysed patients' hormone profiles to provide researchers with a deeper understanding as to how breast cancer cells are affected by different hormones and why patients respond differently to hormone therapy.

The study found that hormone profiles before and after treatment play a significant role in the success of the therapy. This finding opens the door to further studies in larger patient cohorts to improve success rates associated with breast cancer treatment.

Hormones are powerful signalling molecules that play important roles in helping our bodies function normally and respond to the world around us. For over 100 years we have known that oestrogens play a role in making breast cancers grow and many of the common drugs prescribed to treat it are to reduce the amount these hormones or to block their action. Unfortunately, not all patients will respond to these drugs and we need a better way to determine response to this type of therapy."

Dr Marie McIlroy, flomax seizures effects Study Senior Author and Lecturer, Endocrine Oncology Research, Department of Surgery, RCSI University of Medicine and Health Sciences

"By looking at each individual person's tumour hormone levels we get a better idea of the differences between people who respond well to hormone treatment and those who do not, potentially enabling us to make more informed decisions on treatment options for patients".

Funded by the Beaumont Cancer Research and Development Trust, the study was carried out by researchers from the RCSI in collaboration with the Applied Bioinformatics of Cancer, Institute of Genetics and Cancer, University of Edinburgh Cancer Research Centre; Manchester University, NHS Foundation Trust; Department of Pathology, Beaumont Hospital, Dublin; and Charles University, Pilsen, Czech Republic.

Source:

RCSI University of Medicine and Health Sciences

Journal reference:

Bleach, R., et al. (2021) Steroid Ligands, the Forgotten Triggers of Nuclear Receptor Action; Implications for Acquired Resistance to Endocrine Therapy. Clinical Cancer Research. doi.org/10.1158/1078-0432.CCR-20-4135.

Posted in: Medical Science News | Medical Research News | Women's Health News

Tags: Bioinformatics, Breast Cancer, Cancer, Cancer Treatment, Drugs, Endocrine, Genetics, Hormone, Hospital, Medicine, Oncology, Pathology, Receptor, Research, Skin, Skin Cancer, Steroid, Surgery

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