Professor Chris Bunce, from Leukaemia and Lymphoma Research, told ITV News the new drug could be an 'exciting breakthrough' in treating leukaemia.
Cardiff scientists have developed a new drug that could help to treat a common form of leukaemia. The new antibody is the first of its kind and helps to prolong the lives of patients.
Professor Chris Fegan, from the University Hospital of Wales, said the new antibody is "better than what we've had for 16 years."
A new drug to treat malignant melanomas is currently being licensed. The Wales Cancer Research Network says trials show Vemurafenib can make a real difference and they hope it will be made available on the NHS. But cancer charities say skin cancer prevention is still the best cure.