LONDON (Reuters) - British scientists have discovered a new way to improve the effectiveness of drugs used to treat prostate cancer. Researchers at the Weatherall Institute of Molecular Medicine in Oxford found that blocking the action of a gene called IGF1R makes prostate cancer cells more sensitive to radiotherapy and certain chemotherapy treatments. "This is the first study to show that silencing the IGF1R gene can improve the effectiveness treatments for prostate cancer," Dr Val Macaulay, who headed the research team, said on Friday. Prostate is one of the most common cancers in men. Each year 543,000 new cases are...