The purpose of this study is to evaluate the efficacy and safety of recombinant human endostatin（continuously-pumped）combined with chemoradiotherapy in patients with advanced squamous cell carcinoma of the head and neck. The patients will be randomized to concurrent radiotherapy (CRT) arm and CRT + Endostar arm. All patients will receive one cycles of induction chemotherapy, intensity modulated radiation therapy (IMRT) with weekly cisplatin and 3 cycles of chemotherapy after IMRT. Treatment cycles will be repeated every 21 days for a maximum of 4 cycles. In CRT + Endostar arm, Endostar will be continuously intravenous pumped (7.5 mg/m2) for 14 days (d1-d14) during chemotherapy and for 5 days/week (d-5-d-1, d3-d7, d10-d14, d17-d21) during IMRT.

The patients will be randomized to CRT arm and CRT + Endostar arm. All patients will receive one cycles of induction chemotherapy, intensity modulated radiation therapy (IMRT) with weekly cisplatin and 3 cycles of chemotherapy after IMRT. Treatment cycles will be repeated every 21 days for a maximum of 4 cycles. In CRT + Endostar arm, Endostar will be continuously intravenous pumped (7.5 mg/m2) for 14 days (d1-d14) during chemotherapy and for 5 days/week (d-5-d-1, d3-d7, d10-d14, d17-d21) during IMRT.

Prior to enrollment in this study and while the patient is receiving the therapy, routine tests, ECG, head and neck CT scan and MRI will be performed to check the body's response to the treatment. Further more, before and after the treatment, the circulating endothelial cells (CECs), endothelial progenitor cells (CEPs), vascular endothelial growth factor (VEGF), Cancer embryo antigen (CEA), Neuron-specific enolase (NSE) in blood and Microvessel density (MVD), hypoxia-inducible factor-1a (HIF-1a), P53, VEGF, Survivin in pathological specimens will be tested.

Patients with progressive disease or intolerable side effects will be removed from the study. Patients with stable disease or tumor response will continue therapy for a maximum of 4 cycles.

Primary outcome: The response rate (RR), the clinical benefit rate (CBR), time of tumor progression (TTP).

Secondary outcomes: The quality of life (QOL)，Safety and Tolerability.

Inclusion Criteria:

• Histologically confirmed unrespectable or postoperative recurrent squamous cell carcinoma of the head and neck;

• No prior radiation or chemotherapy and biotherapy before;

• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.Life expectancy greater than 3 months;

• Patients must have adequate bone marrow function:

  • Platelets ≥ 80×109/L
  • Hemoglobin ≥100 g/L
  • Absolute NeutrophilCount ≥1.5×109/L
  • white blood cell≥ 3.5×109/L

• Patients must have adequate liver and renal function:

  • Aspartate aminotransferase (AST) and Alanine Aminotransferase (ALT) < 2.5 × upper limit of normal
  • Alkaline phosphatase < 2.5 × upper limit of normal
  • Total bilirubin < 1.5 mg/dL
  • Creatinine <1.5 mg/dL× upper limit of normal

• A cardiac ejection fraction > 50%;

• Ability to understand and willingness to sign a written informed consent.

Exclusion Criteria:

• Participation in any investigational drug study within 4 weeks preceding the start of study treatment;
• Age ≤18 or ≥75 years of Age;
• Pregnant or breastfeeding women;
• Serious, uncontrolled, concurrent infection(s) requiring antibiotics;
• Clinically apparent central nervous system metastases or carcinomatous meningitis;
• Treatment for other carcinomas within the last 3 months;
• Patient unable or not willing to perform all study related biopsies and blood draws for exploratory endpoints will not be enrolled on study as all study related procedures are mandatory;
• Patients with clinically significant cardiac disease (New York Heart Association Classification III or IV and cardiac arrhythmias not well controlled with medication), or myocardial infarction within the previous six months.