Shining a Light on Early Cancer Detection

Cancer that is diagnosed at an early stage, before it has grown and spread through the body, is more likely to be treated successfully. This means that detecting cancer quickly saves lives and there is an urgent need for earlier, accessible cancer detection globally.

Usually, detecting cancer is done through a combination of physical exams, imaging tests, blood tests, and biopsies. A biopsy, where a tissue sample is taken and examined under a microscope. This process is time-consuming and often relies on parts of the health system working together quickly, which does not always happen. Some cancers, like brain, pancreatic, and ovarian cancers, are difficult to detect, which can slow diagnosis even further.

By contrast, liquid biopsies can detect cancer more quickly. This type of testing looks at bodily fluids (typically blood) for evidence of cancer cells by finding biomarkers that are shed by cancer cells into the bloodstream. Liquid biopsy technology is advancing fast and with new technologies emerging, such as using light to detect these signals. This is a similar approach to that used when small swabs are passed over luggage and analysed at airport security.

By combining this spectral analysis with artificial intelligence (AI), it is possible to speed up cancer detection at a significantly lower cost. At the forefront of this revolution in cancer detection is Dr. Holly J. Butler. Dr Butler is the founder and CTO of Dxcover, the company behind the award-winning multiomic spectral analysis platform. Grounded in biophotonics and driven by an unwavering dedication to improving patient outcomes, Dr Butler is striving to bring about a new era of non-invasive diagnostics; one where a couple of drops of blood and a beam of light might one day save millions of lives.

Dr Butler, alongside an award-winning leadership and research team, has been developing methods to analyse blood samples using infrared spectroscopy. What they discovered was a way of ‘reading’ the biochemical fingerprint of disease in a standard blood test. This research became the foundation of an award-winning proprietary platform that leverages a unique combination of AI and spectral analysis to detect patterns in small blood amounts, allowing clinicians to find cancer earlier, more accurately, and far more affordably than many existing techniques.

The potential is enormous. Unlike conventional liquid biopsies, which rely on picking up fragments of tumour DNA, this platform is more wide-ranging in its approach. It uses a multiomic strategy – looking at proteins, lipids, metabolites, and more – through a process known multiomic spectral analysis. It translates to even tiny tumours, sized at just 0.2 cm, being capable of leaving a detectable trace. And it’s all done with just nine microlitres of blood.

Dr Butler’s drive to transform scientific ideas into reality started early. After her Ph.D., she took on a Scottish Enterprise-funded project to translate laboratory-based research into clinical diagnostics. Her entrepreneurial endeavours were making waves as early as 2017 – she was ‘Young Entrepreneur of the Year’ at the Scottish Women’s Awards and received the Women in Innovation award at the Global Game Changers Awards. She has continued to be a vocal advocate for women in STEM and an active mentor to early-career scientists and entrepreneurs via the Strathclyde Inspire network in the intervening period.

“I’ve always been drawn to problems where science can make a real, tangible difference in people’s lives,” she says. “To me, early detection for the most difficult to detect cancers is one of the biggest, most urgent problems we face – and one we hope to solve.”

Dr. Butler’s role in bringing this innovation along is as much practical as it is strategic. She is part of a team that spans lab operations, data, software, quality and regulatory affairs, pushing the science to clear the bars for real-world medical use. “You can’t just invent a technology,” she says. “You need to prove that it works, scale it with safety, meet stringent quality specifications, and prove how it fits into clinical pathways. That is the challenge.”

For Dr Butler, it is about the impact on lives. “Cancer still kills nearly 10 million people a year,” she says. “The difference between early or late detection can be life and death. We want to make early detection routine – not something that’s just for some individuals or comes too late.”

Now pursuing an Executive MBA, Dr. Butler is expanding her leadership credentials. “Science gave me the means to innovate,” she says. “But the MBA is teaching me to lead, to strategise, to build something that can last.”

That ecosystem, she hopes, will be one where innovation and inclusion go hand-in-hand. She’s particularly passionate about ensuring that diagnostic breakthroughs become accessible across communities. “We’re aiming for a future where your GP can run a test like this early—long before you’re even referred to a specialist,” she explains.

Dr. Butler’s work remains patient-centred and personal. “Every time we detect a cancer that would have been missed – that’s the goal,” she says. “And every time we improve the technology is a step closer to a world where fewer people have to hear the words, ‘if only we’d caught it sooner.'”