News
Innovative technique could ‘significantly’ improve breast cancer outcomes
Breast cancer is the most diagnosed cancer in the UK and the second most common cause of cancer mortality in women
A new detection technique used by scientists at the National Physical Laboratory (NPL) has the potential to improve breast cancer outcomes.
Researchers demonstrated the first in-person measurements of breast tissue. The technique works by transmitting ultrasonic waves through the breast which are then detected by a new type of sensor resulting in maps which shows how much ultrasound is lost in the tissue.
The team conducted a study measuring the breast tissue of 12 nominally healthy volunteers aged between 19 and 65 years old.
The study showed that the relatively simple technique could be applied as a robust method for assessing the breast composition and provides encouraging results which can be used for anything from breast ultrasound scanner design to image reconstruction improvements.
Breast cancer is the most diagnosed cancer in the UK and the second most common cause of cancer mortality in women, with around 11,000 fatalities per year in the UK.
Through the National Breast Screening programme, two and a half million women are annually invited for X-ray mammography, but this technique has issues particularly with younger women whose breast density is high.
Breasts with high mammographic density appear cloudy in X-ray screening and this can lead to cancerous breast lesions being more difficult to detect.
Breast density has also been shown to be a significant independent breast cancer risk factor. The charity Breast Cancer Now estimates there are 700,000 women in the UK with high breast density that puts them at increased risk of developing breast cancer.
The analysis of this study explains that the technology – when in a fully developed medical device – could meet an existing requirement for a relatively simple method for assessing the properties of breast tissue, particularly breast density.
In comparison to X-ray mammography, this new technology is less invasive, more comfortable and, completely safe as it eliminates risks associated with exposure to ionising radiation, scientists say.
NPL has been using ultrasound breast imaging system for improving methods of breast cancer diagnosis . The team plans to conduct further in-person studies to compare measurements from their research platform to conventional methods of measuring breast density.
“New ultrasound technologies are providing unique solutions to many longstanding challenges in healthcare,” said Daniel Sarno, Senior Research Scientist, NPL.
“Over the last decade, there have been growing calls to improve the efficiency and effectiveness of breast screening programme – particularly in the aftermath of the COVID-19 pandemic.
“The ultrasound technology breakthrough made at NPL will enable clinicians to better distinguish different soft tissue types through traceable measurement, with applications in the breast for non-invasive breast density assessment, breast cancer diagnosis and therapy treatment tracking.
“While still in the research phase, we are encouraged by our in-person results and excited about the technology journey from benchtop to bedside,” Sarno added.
Diagnosis
Lung cancer drug shows breast cancer potential
Ovarian cancer cells quickly activate survival responses after PARP inhibitor treatment, and a lung cancer drug could help block this, research suggests.
PARP inhibitors are a common treatment for ovarian cancer, particularly in tumours with faulty DNA repair. They stop cancer cells fixing DNA damage, which leads to cell death, but many tumours later stop responding.
Researchers identified a way cancer cells may survive PARP inhibitor treatment from the outset, pointing to a potential way to block that response. A Mayo Clinic team found ovarian cancer cells rapidly switch on a pro-survival programme after exposure to PARP inhibitors. A key driver is FRA1, a transcription factor (a protein that turns genes on and off) that helps cancer cells adapt and avoid death.
The team then tested whether brigatinib, a drug approved for certain lung cancers, could block this response and boost the effect of PARP inhibitors. Brigatinib was chosen because it inhibits multiple signalling pathways involved in cancer cell survival.
In laboratory studies, combining brigatinib with a PARP inhibitor was more effective than either treatment alone. Notably, the effect was seen in cancer cells but not normal cells, suggesting a more targeted approach.
Brigatinib also appeared to act in an unexpected way. Rather than working through the usual DNA repair routes, it shut down two signalling molecules, FAK and EPHA2, that aggressive ovarian cancer cells rely on. FAK and EPHA2 are proteins that relay survival signals inside cells. Blocking both at once weakened the cells’ ability to adapt and resist treatment, making them more vulnerable to PARP inhibitors.
Tumours with higher levels of FAK and EPHA2 responded better to the drug combination. Other data link high levels of these molecules to more aggressive disease, pointing to potential benefit in harder-to-treat cases.
Arun Kanakkanthara, an oncology investigator at Mayo Clinic and a senior author of the study, said: “This work shows that drug resistance does not always emerge slowly over time; cancer cells can activate survival programmes very early after treatment begins.”
John Weroha, a medical oncologist at Mayo Clinic and a senior author of the study, said: “From a clinical perspective, resistance remains one of the biggest challenges in treating ovarian cancer. By combining mechanistic insights from Dr Kanakkanthara’s laboratory with my clinical experience, this preclinical work supports the strategy of targeting resistance early, before it has a chance to take hold. This strategy could improve patient outcomes.”
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