Phase Ib Clinical Study of Toripalimab Combined With Gemcitabine and Cisplatin Neoadjuvant Chemotherapy in Patients With Resectable Locally Advanced Head and Neck Squamous Cell Carcinoma
Head and Neck Squamous Cell Carcinoma (HNSCC) is the most common malignant tumor of the head and neck, accounting for 90% of head and neck malignancies, and 16% to 40% of systemic malignancies. There are 60,000 new cases reported annually worldwide, and the incidence and mortality are increasing year by year, however,the 5-year survival rate under standard treatment is only 50%. 70%\ 80% of patients already developed into locally advanced status (stage II-IVa) when they are first diagnosed. The treatment principle is mainly determined by the clinical stage and location of the tumor, various factors affecting the prognosis and the patient's tolerance. Locally advanced head and neck squamous cell carcinoma has a higher probability of local/regional failure and distant metastasis after treatment. Therefore, in recent years, the use of neoadjuvant therapy (NAC) followed by surgery or radiotherapy has been advocated. Surgical treatment is still one of the preferred treatments for local head and neck squamous cell carcinoma. TPF (Docetaxel + Cisplatin + Fluorouracil) regimen is considered as the standard regimen of induced chemotherapy for head and neck squamous cell carcinoma (especially in laryngeal cancer), which can significantly reduce the patient's distant metastasis rate and prolong overall survival ( OS). Nevertheless, the therapeutic effect of neoadjuvant therapy on head and neck squamous cell carcinoma has reached a bottleneck. In recent years, PD-1 inhibitors have achieved significant effects in the field of tumor therapy and have been approved for the treatment of various tumors including head and neck tumors. And a number of clinical trials have shown that PD-1 inhibitors can significantly prolong the OS of patients. Altogether, the investigators launch an open-label, single-arm, phase Ib clinical trial of PD-1 inhibitor plus chemotherapy in patients with resectable HNSCC to explore the safety and efficacy of the treatment. The study comprises two stages, run-in and case development.
• Untreated locally advanced head and neck squamous cell carcinoma confirmed by histology or cytology;
• Patients who are recommended to perform surgery;
• Patients between 18 and 70 years old;
• ECOG: 0～2 points;
• Estimated survival time ≥ 6 months;
• At least one measurable lesion should be detected according to the RECIST 1.1;
• The major organs meet the following standards (no blood components and cell growth factors are injected within 14 days):
‣ Hemoglobin HB≥90 g/L; neutrophil ANC≥1.5×109/L; platelet count PLT≥100×109/L;
⁃ Serum albumin ≥28g/L;
⁃ Total bilirubin TBIL≤1.5×upper limit of normal, alanine aminotransferase ALT, aspartate aminotransferase AST≤2.5×upper limit of normal; if there is liver metastasis, ALT and AST≤5×upper limit of normal;
⁃ Serum creatinine ≤1.5×upper limit of normal, and creatinine clearance ≥50 mL/min;
⁃ Activated partial thromboplastin time (APTT) and international normalized ratio (INR) ≤ 1.5 × upper limit of normal (for the use of stable doses of anticoagulant therapy such as low molecular weight heparin or warfarin, and INR in the anticoagulant expected treatment can be filtered within the scope);
⁃ TSH≤ upper limit of normal; if abnormal, the T3 and T4 levels should be examined, and the T3 and T4 levels are normal.
• Women of childbearing age should take contraceptive measures (such as intrauterine devices, contraceptives or condoms) during the medication period and within 3 months after the medication; the serum or urine pregnancy test is negative within 7 days before the study is enrolled, And must be a non-lactating patient, and the male should agree to take contraceptive measures during the study period and within 3 months after the end of the study period;
• The subjects voluntarily joined the study, signed an informed consent form, had good compliance, and cooperated with the follow-up.