Aprepitant for Nause and Vomiting Induced by Chemoradiotherapy in HNSCC

Inclusion Criteria: Pathology confirmed squamous cell carcinoma. The primary sites included nasopharynx, mouth, oropharynx, hypopharynx, larynx, nasal cavity and paranasal sinuses; Aged 18 to 70 years old; Stage III-IVB diseases; Eastern Cooperative Oncology Group Performance Status 0-1; Normally functioning of liver, kidney, bone marrow; Concurrent chemoradiotherapy is recommended after multi-disciplinary team discussion; Must be able to swallow tablets; At least 12 weeks lifetime was expected; Fertile male or female patients volunteered to use effective contraception within 90 days of the study period and at the end of study. Exclusion Criteria: Nausea and vomiting occurred 24 hours before the start of the chemotherapy; Corticosteroid or benzodiazepines used; Combination Medicine which metabolism through drug-metabolizing enzyme CPY3A4 and CYP2D6; Serious cardiovascular, pulmonary, diabetes, mental and other diseases; Perinatal women or refused to take contraception during treatment; Other induced vomiting factors. (The transfer of the central nervous system, intestinal obstruction or hypocalcemia, and so on)