RADICALS-HD presented at ESMO Paris 2022

The results from the RADICALS-HD trial was presented at the European Society for Medical Oncology (ESMO) Congress in Paris on 12th September 2022. Please press the link below for further details:

A Participant summary of the RADICALS-HD results is also available here.


COVID-19 vaccine guidance

The RADICALS Trial team encourages everyone on the RADICALS trial to have a Covid vaccine if they are advised to do so by their hospital doctor or GP. The UK Chemotherapy Board has produced the following FAQ document including guidance on giving the COVID-19 vaccine to patients receiving Systemic Anti-Cancer Therapy. The document covers all tumour groups receiving chemotherapy and is relevant to all clinical staff involved with the management of patients within these tumour groups. Please feel free to refer to the document if you have any concerns about the suitability of the vaccine for your RADICALS participants. Read more...


NCRI Prostate Cancer Group has cited RADICALS-RT as one of their top achievements of the year

We are delighted to share with you that The National Cancer Research Institute (NCRI) Prostate Cancer Group has cited RADICALS-RT as one of their top 3 achievements of the year in their 2019-2020 annual report!


RADICALS-RT in the radiation oncology journal club on Twitter

We would like to bring to your attention that the RADICALS-RT paper will be featured in the radiation oncology journal club on Twitter. #radonc #jc

The chat will begin at 8 AM Central Standard Time on Saturday January 16th and carry through into Sunday. There will be a “live hour” at 2 PM Central Standard Time on Sunday January 17th where Professor Chris Parker and Professor Matt Sydes will join the discussion regarding the value of adjuvant radiotherapy against a value of early salvage radiotherapy in the setting of PSA biochemical progression.

The questions will be tweeted at intervals throughout the asynchronous chat and the live hour will consist of the same questions tweeted in a rapid fire way.


Covid-19 Response (Oct 2020 update)

In the light of the rapidly evolving situation with COVID-19 in the UK, we are recommending an adjustment to the follow up procedure for the RADICALS trial with immediate effect. This updated guidance supersedes the document we circulated on 20 March 2020.

Please navigate to the members area for more info


Men who have had prostate cancer surgery do not need immediate radiotherapy

Men who have had surgery to remove their prostate do not need immediate radiotherapy, according to the results of the RADICALS-RT trial and ARTISTIC meta-analysis. These results were published on September 28, 2020 in The Lancet journal.

These results are good news for the 7,000 men who are treated for prostate cancer by radical prostatectomy each year. It means most of them can avoid 20 or more trips to the hospital for radiotherapy, and the associated costs and side-effects of that. Instead, they can be regularly monitored, with radiotherapy only needed if their cancer shows signs of coming back.

Previous research had shown that immediate radiotherapy reduced the risk of cancer coming back. However, more sensitive blood tests are now able to pick up the return of cancer earlier, allowing radiotherapy to be given sooner when it is needed. Until now, it was unclear whether immediate radiotherapy still offers patients better outcomes than observation with these improved tests.

The RADICALS-RT trial looked at 1396 men with prostate cancer after they had surgery to remove the cancer. They were randomly split into two groups:

One group had radiotherapy immediately after surgery,
One group were observed, and only given radiotherapy if their prostate cancer returned
The ARTISTIC meta-analysis looked at the results from three trials looking at this question, to see what the evidence overall says.

Both RADICALS-RT and ARTISTIC found no evidence that immediate radiotherapy delayed the cancer coming back, compared to observation with radiotherapy given when needed. Only one in three men in the observation group in RADICALS had needed radiotherapy within five years. This suggests that two thirds of men can safely avoid radiotherapy, potentially for many years, if they are closely monitored.

RADICALS-RT is continuing to follow-up men in the trial, to see if there is any effect on how long men live.

The RADICALS-RT trial was funded by the MRC and Cancer Research UK and took place in hospitals throughout the UK, as well as Canada, Denmark and Ireland. The ARTISTIC meta-analysis was funded by the MRC.


Further information



Covid-19 Response

In the light of the rapidly evolving situation with COVID-19 in the UK, we are recommending an adjustment to the follow up procedure for the RADICALS trial with immediate effect. This builds on initial, more general COVID-19 correspondence we sent you on behalf of our unit Director on 13th March 2020.

Please navigate to the members area for more info


September 2019

More men with prostate cancer can be spared radiotherapy after surgery

More men with prostate cancer can be spared radiotherapy after surgery. The first results from the RADICALS-RT trial were presented on 27th September 2019 at the ESMO Congress 2019 (Barcelona, Spain).

The RADICALS-RT trial looked at 1396 men with prostate cancer after they had surgery to remove the cancer. They were randomly allocated to receive either radiotherapy immediately after surgery, or observation only. For those patients that were under observation (the standard care group), they received radiotherapy if their prostate cancer returned.

RADICALS-RT found that after five years, 15 out of 100 men in the radiotherapy group and 12 out of 100 men in the standard care group had prostate cancer that had gotten worse. These results were compatible with chance, strengthening the case for observation after surgery, and meaning that radiotherapy would only be needed if the cancer came back.

Chris Parker (Institute of Cancer Research and Royal Marsden NHS Foundation Trust) said: “The good news is that in future, more men will avoid the side-effects of post-operative radiotherapy.”

Surgery for prostate cancer has several potential complications, including urinary leakage and narrowing of the urethra. Radiotherapy after surgery can make these complications more likely.

The results of the RADICALS-RT trial were confirmed by the ARTISTIC meta-analysis. ARTISTIC looked at three randomised trials comparing immediate radiotherapy with radiotherapy only if the prostate cancer returned. There were 2151 men included across the three trials. The results from the ARTISTIC meta-analysis were also presented at the ESMO Congress 2019.

January 2019

RADICALS Protocol v6.0 Substantial Amendment is ready for site processing. Please navigate to the Members Area for documentation and email the Amendment Acknowledgement, ISF Assessment Checklist and Local R&D approval to

11th January 2017

We are delighted to inform you that RADICALS closed to recruitment on 30th December 2016! The trial started recruitment in November 2007 and successfully randomised 2840 patients to the hormone duration randomisation (RADICALS-HD) and 1396 patients to the radiotherapy timing randomisation (RADICALS-RT).

24th March 2016

We have some exciting and important updates which you can read about in the latest version of the RADICALS Newsletter. Highlights include: updated and new CRFs, important trial definitions, an upcoming data chase, co-enrolment with Add-Aspirin and sharing good practice. We hope you take a look and please feel free to get in touch if you have any comments or questions.

1st July 2015

RADICALS-HD closed on 30th June 2015 with just under 3000 patients!
RADICALS-RT is still open to recruitment so please continue to support us.

22nd May 2014

Upon review of our recent event rate projections we have now decided that the ideal time to close to both comparisons in RADICALS-HD would be June 2015.

We are pleased to say that the proposal to extend our recruitment has been approved by the Trial Steering Committee (the executive committee for the trial). By doing so, we envisage that we would attain 88% power by June 2020 for the RT-only vs. RT+ short term HT comparison. Similarly, we should be able to attain 92% power by June 2020 for the RT+ short term HT vs. RT+ long term HT comparison.

We also plan to recruit to RADICALS-RT for longer (perhaps into June 2016) to achieve 80% power. We are very optimistic that we can achieve these target accrual numbers with your continued support.

8th November 2013

Princess Margaret Hospital in Toronto put in their 100th patient on 30th October 2013! Well done and congratulations for all your hard work! They now join Guy’s Hospital and Mount Vernon Hospital in London as the centres with more than 100 patients. We look forward to seeing this list grow.

15th July 2013

We have reached a fantastic milestone in RADICALS-HD where we now have 1000 patients in each of the two RADICALS-HD comparisons (none vs short and short vs long). Our target accrual is at least 1370 patients in the none-vs-short comparison and at least 1130 patients in the short-vs-long comparison. Currently we have 1916 patients in RADICALS-HD overall and we are hoping to recruit an overall total in excess of 2500 patients, so, we still need everyone to keep up the great work and keep recruiting patients.

May I also take this opportunity to remind you that it is preferable to randomise patients between all three arms in RADICALS-HD as this is the most efficient for the trial.

Having reached this milestone we are optimistic that we can achieve the same in RADICALS-RT and push our accrual figure from 661 to 1000 in good time with your continued support.

11th March 2013

Claire Murphy who has been the RADICALS Trial Manager at the MRC CTU since the trial started will no longer be working on the trial. We wish her all the best and will greatly miss her. Dipa Noor will be replacing Claire and can be contacted at

26th February 2013

Congratulations to Mount Vernon Hospital in the UK for recruiting their 100th patient into the trial! Thank you for all your hard work and keep up the good work!

7th January 2013

Over 2000 patients have now been recruited to RADICALS! This is great news to start the year and is down to the hard work of all our participating centres and the support of participants and their families.

We would like to give a special mention to Guy's & St Thomas's Hospital in London who have now recruited their 100th patient! They are the first centre to reach this milestone and their efforts and enthusiasm are much appreciated.

We look forward to working with you all in 2013.

3rd October 2012

We are pleased to report that we have now recruited over 500 patients to the Radiotherapy Timing Randomisation (RADICALS-RT). This is an important milestone for RADICALS and the trial team would like to thank the research teams, all participants and their families for supporting this randomisation and ask that you continue to support it. We can answer this important question with your help.

12th July 2012

Review of Radiotherapy Timing

A newly published paper in European Urology by Stephenson et al (1) looks at combined data from the three trials of post-op radiotherapy timing: SWOG 8794, EORTC 22911 and ARO 96-02. Long-term results from each of these trials have been presented separately in the past, but here they are discussed together in a manuscript written by representatives from each of these trials. No formal combined analyses are presented.

The paper concludes that the results of RADICALS-RT are "eagerly anticipated to inform physicians regarding the merits of adjuvant versus salvage RT for men with an elevated risk of cancer occurrence after RP". The associated editorial by Kibel (2) also emphasises the need for data from high quality contemporary RCT.

RADICALS is recruiting throughout the UK, Canada, Denmark and Ireland. With your continued support and efforts, we will answer these clinically important questions.

References: 1. Stephenson AJ, Bolla M, Briganti A, Cozzarini C, Moul JW, Roach III M, et al. Postoperative Radiation Therapy for Pathologically Advanced Prostate Cancer After Radical Prostatectomy. European Urology 2012;61(3):443-51 2. Kibel AS. Treat Now or Later: The Dilemma of Postoperative Radiotherapy. European Urology 2012;61(3):452-4

3rd May 2012

The latest RADICALS news can be viewed here:


8th March 2012

Record breaking recruitment in RADICALS! Read more in the March edition of the RADICALS newsletter:

RADICALS Newsletter - March 2012

2nd December 2011

Updated CRFs have been sent to all centres and can also be found on the Centres page here. Please ensure you are using the correct version of each CRF.

24th November 2011

The latest editions of the RADICALS newsletters are available to read here:

RADICALS-RT Newsletter
RADICALS-HD Newsletter

23rd November 2011

The Quality of Life assessment is one of the most important assessments in RADICALS-RT as there is currently limited patient-reported data on symptoms and morbidities associated with treatments after radical prostatectomy. All RADICALS-RT patients are encouraged to contribute to this part of RADICALS.

It is important that centre staff remember to ask these patients to complete the forms at baseline, year one, year five and year ten. Centres will be receiving information soon regarding their quality of life compliance rates.

16th September 2011

A huge milestone has been reached in the RADICALS trial.1000 patients have now joined the RADICALS-HD comparison. Western General Hospital in Edinburgh randomised the 1000th patient into the comparison. Thanks to them and all RADICALS centres for the hard work and support for the trial which means that we are now halfway to completing recruitment to RADICALS-HD. We are also now over one quarter of the way through completing recruitment to RADICALS-RT. We hope you can all continue the hard work which will be needed to complete recruitment to this large and important trial. You can see more information about RADICALS accrual here.

News Extra

RADICALS was featured in the Spring/Summer edition of the BUG (British Uro-Oncology Group) newsletter, BUG Bytes. You can view that newsletter here and see more about BUG on their website here.

18th August 2011

A substantial amendment was submitted and approved by the Royal Free Hospital Research Ethics Committee and the MHRA for RADICALS. The protocol has now been amended to version 4.0, June 2011. Please note that version 3.0, October 2009 should now no longer be used. The current version of the protocol can be found here.

The changes made to the protocol are as a result of new emerging data from randomised controlled trials that suggest that the event rate will be lower than originally anticipated. For the same reason, we will also refocus the primary outcome measure in RADICALS-RT (the Radiotherapy Timing Randomisation) from disease-specific survival to freedom-from-distant metastases (FFDM). FFDM is an earlier outcome measure with clear clinical relevance and the development of distant metastases is on the causal pathway to death from prostate cancer. The trial’s questions about the timing of post-operative therapy and the use of hormone therapy with radiotherapy remain the most important questions in this setting.

Several other minor changes have been made to the protocol, patient information sheets and consent forms. Please contact the trial team if you would like a detailed list of changes.

1st March 2011

February was another record month for recruitment into RADICALS. The highest number of patients per month so far were recruited into both randomisations. There are now 120 centres accredited to recruit to RADICALS including our most recently opened centre, Rigshospitalet in Copenhagen, Denmark. We really appreciate all the hard work everyone is putting in to increase recruitment rates. There is more information about accrual per centre on the accrual page.

8th February 2011

The latest editions of the RADICALS newsletters are available to read here:

RADICALS-RT Newsletter
RADICALS-HD Newsletter

1st October 2010

Last month saw the highest number of patients recruited to RADICALS per month so far with 42 patients randomised. There are now 105 centres that have been accredited to recruit to RADICALS and we appreciate all the hard work everyone is putting in to increase recruitment rates. We hope that October will bring an even higher rate of recruitment. There is more information about accrual per centre on the accrual page.

1st February 2010

There has been an important change to the RADICALS trial which makes recruitment to the trial much simpler for patients and clinicians.

RADICALS is an international, multi-centre, randomised controlled trial for men with prostate cancer. It has two randomisations for overlapping patient groups: the Radiotherapy (RT) Timing Randomisation and the Hormone Duration Randomisation. Accrual to these comparisons has now been completely separated.

Patients who have had a radical prostatectomy in the past five months can take part in the RT Timing Randomisation, looking at early versus deferred post-operative RT. Eligibility for the RT Timing Randomisation is any risk factor for recurrence. In other words, most men who have a radical prostatectomy are eligible for the RT Timing Randomisation!

Only if and when men are actually going to get post-operative RT do they need to be approached about the Hormone Duration Randomisation, which is looking at post-operative RT with or without hormones.

The trial opened late in 2007 and is now activated in 75 centres around the UK and a further 9 centres throughout Canada. If you have any questions or would like more information about RADICALS, please contact

23rd June 2009

We have prepared a series of very short films about the RADICALS trial which are available online. RADICALS is a trial of post-operative radiotherapy and hormone therapy for men with prostate cancer which is open all across the UK. These presentations are aimed at researchers who want to know more about the RADICALS trials or who want to their colleagues to get involved with the trial. First, there is an interview with Chris Parker, Chief Investigator of RADICALS, who describes the background to the trial and some of the practicalities in running the trial. Second, there is a narrated presentation detailing the design of the trial from Matthew Sydes, Trial Statistician. Finally, Claire Murphy, Trial Manager, describes the process of accreditation for interested sites. Clicking on the questions below will take you to YouTube where the presentations are hosted. You will need a sound card.

We hope that you find these videos helpful and informative. Any feedback on these presentations would be welcome at

Issues around the RADICALS trial

  1. What is the current standard of care for men with prostate cancer after radical prostatectomy?
  2. What is the role of radiotherapy after prostatectomy at the moment?
  3. What are the risks and benefits of radiotherapy after surgery for prostate cancer?
  4. In which patients should I be uncertain about the use of post-operative radiotherapy?
  5. What is the role of hormone therapy with post-operative radiotherapy?
  6. Which groups of men could join the RADICALS trial?
  7. What is the main outcome measure in the RADICALS trial?
  8. When is the best time to approach men about RADICALS?
  9. What is the best way to recruit men to the trial?
  10. What issues should be considered when recruiting to the trial?
  11. What is the role of urologists and oncologists in RADICALS?
  12. Can RADICALS be discussed at multi-disciplinary team (MDT) meetings?
  13. The RADICALS trial appears complex. Is it really?
  14. How many men are needed to join the RADICALS trial and where is it taking place?

The design of RADICALS

RADICALS design slides

Site accreditation for RADICALS

RADICALS accreditation processes


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