Chidamide Combined With Cisplatin in Head and Neck Adenoid Cystic Carcinoma (HNACC)

Inclusion Criteria:

1. Age range 18-75 years old
2. Histological confirmed recurrent or metastatic head and neck adenoid cystic carcinoma
3. Unable to treat with surgery/radiotherapy, or previously failure to non-cisplatin systematic treatment;
4. Eastern Cooperative Oncology Group performance status 0 to 2;
5. Patients have written informed consent to participate in the study;
6. anticipated to live ≧3 months;
7. Absolute neutrophil count ≥ 1.5×109/L，platelet ≥ 100×109/L，hemoglobin ≥ 90 g/L
8. total bilirubin \< 1.5×upper limit of normal(ULN), ALT and AST \< 3× ULN
9. serum creatine \<1.5×ULN, and creatinine clearance rate (CCR) ≥ 50 ml/min
10. Ultrasonic cardiogram showed left ventricle ejection fraction ≥ 50%, EKG showed no signs of myocardial ischemia, with no previous arrhythmia which need pharmacological intervention.
11. Measurable disease was defined as at least one lesion ≥1.5 cm in length-diameter and ≥0.5 cm in short-diameter by CT.

Exclusion Criteria:

1. Previously treated with HDACi;
2. Treated with cisplatin-contained regimes in the past half of the year, and not achieving PR/CR;
3. History of other malignancies except cured basal cell carcinoma of skin and carcinoma in-situ of uterine cervix;
4. HIV, HCV, or syphilis infection；
5. Pregnant or lactating women;
6. Serious uncontrolled infection;
7. Severe neurol of mental illness, including dementia and epilepsy;
8. Having contraindications to the use of oral medication, such as unable to swallow, nausea and vomiting, chronic diarrhea or suffering from a bowel obstruction;
9. Participated in other clinical trials in 4 weeks;
10. Other coexisting diseases or situations that may cause patients to fail to complete clinical trials;
11. History of QTc interval prolongation (Male \>450ms，Female \>470ms), ventricular tachycardia, auricular fibrillation, heart block of more than II degrees, myocardial infarction in 1 year, congenital heart disease, with symptomatic coronary heart disease requiring medication.