A new study has revealed that giving chemotherapy after radiotherapy delays further growth of a rare type of brain tumour increasing the number of patients alive at five years from 44 per cent to 56 per cent. These results are from a clinical trial for patients with anaplastic glioma run by the European Organisation for Research and Treatment of Cancer (EORTC). The phase III clinical trial compared survival for patients whose tumours were thought to be less likely to respond to chemotherapy because they did not have mutations in two genes called 1p and 19q. 750 patients from institutes around