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A new breast cancer marker that may help in personalized therapy - Video

Published On 2022-05-27T09:00:57+05:30  |  Updated On 27 May 2022 1:22 PM IST
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Overview

'crown-like structures' surrounding breast tumours in overweight and obese patients were discovered in new study in University of Southampton and it was found that these crown like structures could hinder their response to therapy.

The findings of this study could potentially be used to improve personalised treatment for patients with human epidermal growth factor receptor 2 (HER2) positive overexpressed breast cancer.

Adipose tissue, or body fat, is an important component of the healthy human breast and yet high body mass index (BMI) is associated with increased risk of developing breast cancer. Overweight patients also have worse survival rates than patients with healthy body weight.

In patients with a high BMI, increased body fat surrounding the breast can cause inflammatory immune cells, called macrophages, to gather in the breast's fat tissue. These macrophages can then form what are called 'crown-like structures' by surrounding these fat cells.This creates an inflammatory environment in the breast which can lead to the onset and growth of tumours. How these crown-like structures go on to affect breast cancer progression and respond to therapy is largely unknown.

The research team, led by Professors Stephen Beers, Ramsey Cutress and Dr Charles Birts, assessed samples from a group of HER2+ breast cancer patients to investigate the link between high BMI and the formation of crown-like structures, and the subsequent effect of these on how patients responded to therapy with a drug called trastuzumab. The results, published in the journal Scientific Reports, showed that patients that were overweight or obese had significantly more crown-like structures in their fat tissue surrounding the tumour, and that this was associated with a faster time to metastatic disease, an indication of how well the patients have responded to therapy.

They then went on to identify a potential molecular biomarker, called CD32B, on the surface of the macrophages in these crown-like structures. When this marker was present in overweight and obese patients, their response to trastuzumab therapy was poorer. Stephen Beers,Professor of Immunology and Immunotherapy at the University of Southampton said, "These findings will be of interest to clinicians and researchers involved in breast cancer treatment as they could potentially be used to develop personalised treatment in patients with HER2 positive overexpressed breast cancer.

"For example, doctors would know that patients with a high BMI and the marker on their crown-like structures are likely to have a poor response to trastuzumab therapy. They may therefore benefit from more intensive anti-HER2 therapy earlier in their treatment. The research team are now looking at ways to change the behaviour of these crown-like structures to improve responses to breast cancer therapy.

Speakers

Dr B.P. RAHUL

MBBS (Bachelor of Medicine and Bachelor of Surgery)

Dr B.P.RAHUL (MBBS) has completed his MBBS from Maulana Azad Medical College(MAMC), New Delhi. His areas of interest include Internal medicine, Orthopedics, surgery, and paediatrics. He has a deep intriguing wish in writing highly engaging, captivating and informative medical content for a wider audience. he can be contacted at editorial@medicaldialogues.in. Contact no. 011-43720751

Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751
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