A blood sample taken a day after starting chemotherapy will be able to tell whether cancer patients will survive, scientists have discovered.
Doctors say that if they find out early on that chemo will not work, they will be able to switch the patients to other drugs and treatments, which could increase their chances of living longer.
Researchers say the amount of a protein increases in the bodies of patients who do not respond well to chemotherapy in the first 24 hours of their treatment.