Controversial study suggests treatment should factor in the patient's ethnic group. A heart drug being tested in black patients is on course to become the first medicine approved for use in a specific ethnic group, challenging those scientists who believe that race is a bad basis for prescriptions. The drug, made by Massachusetts-based pharmaceutical company NitroMed, was abandoned after a trial in the 1980s produced unimpressive results. But, because the data hinted at differences between white and black patients' responses, in 2001 NitroMed decided to carry out a further clinical trial using only African Americans. This week NitroMed announced that...