A blood sample taken a day after starting chemotherapy will be able to tell whether cancer patients will survive, scientists have discovered.
But despite the prognosis, medics hope that the early indication that chemo will not work will allow them to switch the patients to other drugs and treatments, actually increasing 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.