Adenoid cystic carcinomas (ACCs) constitute of 1% of head and neck cancers. This type of tumor grows slowly with a high potential of local recurrence. Approximately 50% of patients develop distant metastases, and 33% patients die within 2 years. The initial therapy of these malignancies consists of surgical resection followed by radiotherapy. Systemic therapy is crucial in the management of recurrent and metastatic disease. However, nowadays, there were no standard chemoimmunotherapy regimes. Previous report showed that overall response rate was only less than 10% using single-agent chemotherapies, and the best results were achieved by cisplatin. Chidamide is a new benzamide class of histone deacetylase inhibitor with marked antitumor activity. And a phase I study has showed that one of three patients with submandibular adenoid cystic carcinoma achieved a partial response treated with Chidamide. The investigators conducted this study to evaluate the efficacy of Chidamide combined with cisplatin in recurrent or metastatic head and neck adenoid cystic carcinoma, in order to find a potential promising way to treat this kind of disease.
The investigators conducted this study to evaluate the efficacy of Chidamide combined with cisplatin in recurrent or metastatic head and neck adenoid cystic carcinoma.