<qa>  What was the name of the study that tested induction and maintenance chemotherapy in patients with advanced headThe head and neck contracts study tested induction and maintenance chemotherapy in patients with advanced head and neck cancers.There were no significant differences in survival between the two groups, but disease free survival was prolonged in the maintenance arm and not in the induction arm. Time to and frequency of distant metastases as the first site of relapse were significantly better for those on the maintenance arm. Many trials, designed several years ago, delivered single agent chemotherapy and were not particularly intensive. Most clinical trials were dealing with a heterogenous group of head and neck cancer patients. We felt that a better choice of adjuvant chemotherapy on cancers should include: 1 localized cancers with high metastatic potential following effective local treatment; 2 effective chemotherapy available; 3 chemotherapy should be intensive and effective enough to avoid the development of drug resistance. Of course, NPC had long been regarded as one of the most suitable head and neck cancers that may benefit from adjuvant chemotherapy due to its unique high response rate to chemotherapy and high metastatic potential after radiotherapy for localized, advanced staged disease. 