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Howard Lecture: how human desire to render the invisible visible transformed the prostate cancer diagnosis pathway

The Howard Foundation 40th anniversary lecture was given by Professor Mark Emberton, Professor of Intervention Oncology and Dean, Faculty of Medical Science at University College London, at the Royal Society of 51短视频.听The event was made free for all thanks to generous support from the Howard Foundation.

Prostate cancer is the most common cancer in men, with 52,000 new cases per year according to statistics from Cancer Research UK.

A live audience at the Royal Society of 51短视频 on 28 November heard how, until recently, the diagnosis pathway often led to harms. These included over and under treatment of patients, and high incidences of long-lasting side effects such as incontinence and impotence for those who were treated.

In 2019, NICE approved multi-parametric MRI scanning as a first-line investigation for prostate cancer diagnosis, ahead of biopsy. The change in guidance came about following two clinical trials led by UCL in partnership with University College London Hospitals (UCLH), with Professor Emberton at the helm.

Professor Emberton last week told a live audience at the 40th anniversary Howard Lecture the story of how the trials triggered the transformation of the diagnosis pathway.听


Professor Mark Emberton, Professor of Intervention Oncology and Dean, Faculty of Medical Science at University College London, delivering the Howard Foundation 40th anniversary lecture

But, as Professor Emberton said, the story is not about him alone. 鈥淭his is a lot of people working together to solve problems and it鈥檚 been a privilege to have been part of it鈥.

The story begins on 14 May 1998 when, 鈥渉uddled鈥 around a 鈥減retty blurry鈥 early MRI image at UCLH, 鈥渢he first moment of kind of wonder, and a sense of what might just be possible鈥 occurred.

Professor Emberton explained: 鈥淲e thought we鈥檇 do a sequence that they were doing in brain that had never really been done before in the prostate, and this was injecting contrast. We鈥檇 just treated this prostate with a new experimental technique, and we wanted to see whether we were making any difference to the tissue, to the prostate.

This was the first time in history that I think anybody had ever seen changes within the prostate that had resulted from attempt to treat the prostate.

鈥淭his was the first time in history that I think anybody had ever seen changes within the prostate that had resulted from attempt to treat the prostate. And we could only do that because MRI was just about ready and up for the task. And that was when we started thinking about the possibilities and the future.鈥

Prior to the introduction of MRI scanning, he said, the only way to ascertain what was going on in the prostate was through the rectum 鈥 with the finger being the 鈥減rincipal diagnostic tool鈥 allowing doctors 鈥渢o really feel what the prostate contained, or to ascertain its nature鈥. And, even then, 鈥測ou could only access a really relatively small amount of the prostate 鈥 and we were reliant on that approach for a long, long time.鈥

Treatment options were limited to three approaches: no treatment; removal; or radiotherapy 鈥 all at the extremes of care. This led to many patients getting the wrong treatment or being undertreated, he said, as well as some patients being incorrectly given the all clear.

While every other cancer could be identified by a CT scan or an X-ray, those methods weren鈥檛 available for prostate cancer. Instead, if prostate cancer was suspected, to try to find it, urologists would 鈥渢hrow needles into the prostate in a random manner鈥 without knowledge of the target that you were going after.鈥 It was impossible to know the extent of the errors that were made with this 鈥渞elatively unreliable鈥 approach, Professor Emberton explained.

Identifying the potential for imaging to 鈥渞ender the invisible visible鈥, Professor Emberton鈥檚 unit set about to address the 鈥渦nmet needs鈥, or 鈥減roblems buried in the headlines鈥 of the diagnosis and treatment methods of the time: how to 鈥榮ee鈥 the cancer; how to treat the cancer without the side-effects of incontinence and sexual dysfunction; and how to define the attributes of the cancer that benefits from treatment 鈥 allowing treatment to be tailored to the individual.

The world changed as a result.

The two clinical trials (PROMIS and PRECISION) led by UCL in partnership with University College London Hospitals (UCLH) and overseen by Professor Emberton, demonstrated that exposing patients to MRI prior to biopsy would result in health gains, including fewer missed cancers, better pathology and less harm. The gains also included 鈥渢he clincher鈥: less cost, which prompted NICE to adopt the new approach, and 鈥渢he world changed as a result鈥. The studies showed a quarter of a million men in Europe, if not more, would avoid unnecessary biopsy.

Professor Emberton cited collaboration across disciplines as one of the reasons policy change in the UK was able to be brought about more quickly than in other places. He said: 鈥淏ecause we all work together in teams and in groups there was no problem at all in sending a patient for an MRI - in fact, we would discuss it in groups and learn from each other in groups.鈥

The development of imaging enabled treatment to move away from the extreme of 鈥榳hole gland鈥 treatment to the more tailored 鈥榝ocal therapy鈥 approach, saving tissue. The UCL research showed that 鈥渋f we save a bit of tissue, men are 100% continent and men keep their erections, 95% [of the time].鈥

You can character the disease with amazing precision.

Professor Emberton concluded: 鈥淲hat has MRI meant to the modern approach to the prostate? You can see now, if you know where the cancer is you can avoid these random biopsies. You can direct the needle straight into the tumour. You can get to the source of the problem. You can character the disease with amazing precision. You can send your tissue off for molecular analysis knowing that the cores are representative. You can do fancy tests on the genomic architecture of the tumours鈥 you can also subject the MRI to metabolic analysis 鈥 that not only tells us that cancer is present, it tells us how the cancer is metabolising the energy, how it鈥檚 using energy to proliferate and allow the cells to develop.鈥

And what next for prostate cancer? The future is looking bright, with current research project the Re-IMAGINE study investigating the possibility of doing away with biopsy altogether, 鈥渟o that we can use all the elements that we know about the individual, the prostate, and the cancer that the prostate is harbouring, to make predictions on the nature of that cancer and the future of that cancer without having to stick a needle in.鈥 Artificial intelligence is also likely 鈥済oing to be a very, very important part of modern diagnosis.鈥

Professor Emberton acknowledged the important role charities can play in funding initial research to secure backing for the larger clinical trials required to enact policy change. Speaking at the end of the lecture, Prostate Cancer UK鈥檚 Director of Research, Dr Matthew Hobbs, thanked Professor Emberton for the 鈥済lobal impact鈥 his work had made, while highlighting the charity鈥檚 ambition for a national screening programme to be implemented, to catch the 鈥9,000 men diagnosed with prostate cancer only at the point that it鈥檚 already spread around their body鈥 diagnosed so late that those men have no chance of us curing that disease.鈥


Ms Julie Lambert, Chair, Howard Foundation and Mr Jon Howard,听Secretary, Howard Foundation introduce the lecture

You can watch the Howard Foundation 40th anniversary lecture in full on our .

The RSM would like to thank for their support of this hybrid event.

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