Abiraterone acetate is a pill discovered at The Institute of Cancer Research (ICR) that treats aggressive prostate cancer, which kills 10,000 men in the UK each year.
Chief Investigator Dr Johann de Bono from the ICR and the Royal Marsden NHS Foundation Trust says the study results, which he presented today at the European Society for Medical Oncology Congress in Milan, Italy, may lead to a change in the way doctors treat these patients.
“This is extremely exciting because men with this aggressive type of prostate cancer currently have very few treatment options and a poor prognosis,” says Dr de Bono, who is funded by Cancer Research UK. “Around one man in the UK dies every hour from this disease, so the news that abiraterone acetate may extend survival with manageable side-effects will be incredibly important to men with prostate cancer and their families.”
The randomised Phase III trial, funded by Janssen Pharmaceutical Companies, included 1,195 patients from 13 countries whose advanced prostate cancer had previously been treated with other available therapies, including docetaxel-based chemotherapy. Average overall survival among the 797 patients who received abiraterone acetate plus the steroid prednisone was 14.8 months, compared to 10.9 months for the 398 patients who received the steroid and a placebo.
When compared to the placebo group, patients on abiraterone acetate were more likely to experience a significant drop in their prostate specific antigen (PSA) levels, the standard measure of prostate cancer activity. X-rays showed mean time for tumour growth among the treatment group was halted for longer, and, on average, men taking abiraterone acetate also had more time before their PSA level started to rise again.
Doctors reported patients taking abiraterone acetate generally did not experience some of the unpleasant side-effects associated with chemotherapy. Patients in the abiraterone acetate group did experience more minerlocorticoid-related side effects than those in the placebo group, but these were usually amenable to medical management.
Abiraterone acetate is an investigational compound discovered by Professor Mike Jarman and his colleagues in what is now the Cancer Research UK Cancer Therapeutics Unit at the ICR, and is licensed from BTG International LTD to Janssen.
Prostate cancer growth is fuelled by the male hormone testosterone, and in its aggressive form can produce its own supply. Abiraterone acetate is a targeted therapy designed to block an enzyme involved in the synthesis of testosterone.
Harpal Kumar, Cancer Research UK’s Chief Executive, said: “These results show abiraterone can make a real difference for men with this type of disease. It’s certainly a significant improvement on what might be expected for men with such advanced prostate cancer.”
Based on results of a prespecified interim analysis of the study, the trial’s Independent Data Monitoring Committee recommended unblinding the trial and allowing anyone on the placebo arm to be offered the drug.
ICR Chief Executive Professor Peter Rigby said: “We are very proud that a drug discovered at The Institute of Cancer Research may give men with advanced prostate cancer a new treatment option for managing their condition and improving survival.”
Media Contact: ICR Science Press Officer Jane Bunce on 0207 153 5106 or after hours 077217 47900
Notes to editors:
Prostate cancer has overtaken lung cancer to become the most common cancer in men. One man dies of prostate cancer in the UK every hour, and more than 35,000 men are diagnosed with the disease every year. Prostate cancer is considered to be advanced once it has spread beyond the prostate region.
Abiraterone acetate is a novel, targeted, investigational oral androgen biosynthesis inhibitor being developed for treatment of metastatic advanced prostate cancer that has progressed after developing resistance to conventional hormonal therapies.
Abiraterone was discovered at the ICR in research supported by grants from Cancer Research Campaign (now Cancer Research UK), the Medical Research Council (MRC) and BTG International LTD. Subsequent patient trials and further research on abiraterone was supported by Cougar Biotechnology Inc. / Janssen Pharmaceutical Companies, Cancer Research UK, Experimental Cancer Medicine Centre, the MRC, BTG International LTD, Prostate Cancer Foundation, Prostate Cancer Research Foundation, Prostate Cancer Charity, the ICR and The Royal Marsden.
Abiraterone acetate is not currently available in the UK. Patients who would like more information can phone The Royal Marsden on 0800 021 7297.
The Institute of Cancer Research (ICR)
- The ICR is Europe’s leading cancer research centre
- The ICR has been ranked the UK’s top academic research centre, based on the results of the Higher Education Funding Council’s Research Assessment Exercise
- The ICR works closely with partner The Royal Marsden NHS Foundation Trust to ensure patients immediately benefit from new research. Together the two organisations form the largest comprehensive cancer centre in Europe
- The ICR has charitable status and relies on voluntary income, spending 90 pence in every pound of total income directly on research
- As a college of the University of London, the ICR also provides postgraduate higher education of international distinction
- Over its 100-year history, the ICR’s achievements include identifying the potential link between smoking and lung cancer which was subsequently confirmed, discovering that DNA damage is the basic cause of cancer and isolating more cancer-related genes than any other organisation in the world
- The ICR is home to the world’s leading academic cancer drug development team. Several important anti-cancer drugs used worldwide were synthesised at the ICR and it has discovered an average of two preclinical candidates each year over the past five years
For more information visit www.icr.ac.uk.
The Royal Marsden
The Royal Marsden opened its doors in 1851 as the world’s first hospital dedicated to cancer treatment, research and education. Today, together with its academic partner, The Institute of Cancer Research, it is the largest and most comprehensive cancer centre in Europe treating over 40,000 patients every year. It is a centre of excellence, and the only NHS Trust to achieve the highest possible ranking in the Healthcare Commission’s Annual Health Check for the fourth year in a row.
About Cancer Research UK
- Cancer Research UK is the world’s leading cancer charity dedicated to saving lives through research
- The charity’s groundbreaking work into the prevention, diagnosis and treatment of cancer has helped save millions of lives. This work is funded entirely by the public.
- Cancer Research UK has been at the heart of the progress that has already seen survival rates double in the last forty years.
- Cancer Research UK supports research into all aspects of cancer through the work of over 4,000 scientists, doctors and nurses.
- Together with its partners and supporters, Cancer Research UK’s vision is to beat cancer.
For further information about Cancer Research UK’s work or to find out how to support the charity, please call 020 7121 6699 or visit www.cancerresearchuk.org.