Dr. Victoria John, head of clinical partnerships at Cancer Research UK's Drug Development Office said, "We're delighted to open the first clinical trial of this experimental drug to find out if it can benefit cancer patients in the future. This molecule was brought to us at a very early stage in its development and, with the preclinical work now completed, we're extremely pleased it's obtained regulatory approval to enter the clinic."About Astex Pharmaceuticals Astex Pharmaceuticals is dedicated to the discovery and development of novel small molecule therapeutics with a focus on oncology. The Company is developing a proprietary pipeline of novel therapies and is creating de-risked products for partnership with leading pharmaceutical companies. Astex Pharmaceuticals developed DACOGEN® (decitabine) for Injection and receives significant royalties on global sales. For more information about Astex Pharmaceuticals, Inc., please visit http://www.astx.com . The Astex Pharmaceuticals, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=12273 About The Institute of Cancer Research (ICR) The Institute of Cancer Research (ICR) is one of the world's most influential cancer research institutes. Scientists and clinicians at the ICR are working every day to make a real impact on cancer patients' lives. Through its unique partnership with The Royal Marsden Hospital and 'bench-to-bedside' approach, the ICR is able to create and deliver results in a way that other institutions cannot. Together the two organizations are rated in the top four cancer centers globally. The ICR has an outstanding record of achievement dating back more than 100 years. It provided the first convincing evidence that DNA damage is the basic cause of cancer, laying the foundation for the now universally accepted idea that cancer is a genetic disease. Today it leads the world at isolating cancer-related genes and discovering new targeted drugs for personalized cancer treatment. As a college of the University of London, the ICR provides postgraduate higher education of international distinction. It has charitable status and relies on support from partner organizations, charities and the general public. The ICR's mission is to make the discoveries that defeat cancer. For more information visit www.icr.ac.uk About The Institute of Cancer Research's Cancer Research UK Cancer Therapeutics Unit The Institute of Cancer Research's Cancer Research UK Cancer Therapeutics Unit is the world's leading academic drug discovery team. It has discovered 16 new drug candidates over the past six years, with six of these progressing to Phase I clinical trial and one drug – abiraterone – being licensed in the US, Canada and Europe for patients with advanced prostate cancer. This success was recently recognized by the American Association of Cancer Research's Team Science Award. About Cancer Research Technology Cancer Research Technology (CRT) is a specialist commercialization and development company, which aims to develop new discoveries in cancer research for the benefit of cancer patients. CRT works closely with leading international cancer scientists and their institutes to protect intellectual property arising from their research and to establish links with commercial partners. CRT facilitates the discovery, development and marketing of new cancer therapeutics, vaccines, diagnostics and enabling technologies. CRT is a wholly owned subsidiary of Cancer Research UK, the largest independent funder of cancer research in the world. Further information about CRT can be found at www.cancertechnology.com About Cancer Research UK's Drug Development Office Cancer Research UK's Drug Development Office has an impressive record of developing novel treatments for cancer. It currently has a portfolio of around 35 new anti-cancer agents in preclinical development, phase I or early phase II clinical trials. Since 1982, the Cancer Research UK Drug Development Office has taken over 120 potential new anti-cancer agents into clinical trials in patients, six of which have subsequently made it to market and many others are still in clinical development. Marketed drugs include Temozolomide, a drug discovered by Cancer Research UK scientists, that is an effective new treatment for brain cancer and Abiraterone which was co-discovered by Cancer Research UK scientists to treat advanced prostate cancer. Six other drugs are in late development phase III trials. This rate of success is comparable to that of any pharmaceutical company.