Spots Global Cancer Trial Database for A Study of PEP503 With Radiotherapy in Combination With Concurrent Chemotherapy for Patients With Head and Neck Cancer

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Trial Identification

Brief Title: A Study of PEP503 With Radiotherapy in Combination With Concurrent Chemotherapy for Patients With Head and Neck Cancer

Official Title: A Phase 1b/2 Study of PEP503 (Radioenhancer) With Radiotherapy in Combination With Concurrent Chemotherapy for Patients With Head and Neck Cancer

Study ID: NCT02901483

Conditions

Head and Neck Squamous Cell Carcinoma

Interventions

PEP503

Cisplatin

Radiotherapy

Study Description

Brief Summary: It's a prospective, open-label, single arm, nonrandomized study of PEP503 in head and neck squamous cell carcinoma (HNSCC) patients. * Escalation portion (Phase 1b):A 3 + 3 dose escalation study design will be adopted in this phase to identify the recommended intratumor injection volumes of PEP503. * Expansion portion (Phase 2): Following confirmation of the recommended volumes, 18 additional patients will be enrolled at the recommended volume level to evaluate for safety and efficacy.

Detailed Description: Primary Objectives: * Phase 1b (dose escalation portion): To assess the safety profile and determine the Dose Limiting Toxicity (DLT) and to define the recommended volumes (doses) of PEP503. * Phase 2 (expansion portion): To evaluate the anti-tumor activity in terms of the rate of locoregional control at one year and to evaluate the safety profile. Secondary Objectives: * Phase 1b: To characterize the body kinetic profile of PEP503. * Phase 2: Objective tumor response, progression free survival rate at 1 year and pathological response (pR). The target population is composed by patients who have pathologically confirmed squamous cell carcinoma of oral cavity with disease clinically staged as T4b who are not candidates for surgical resection or T3-4 who decline surgery or medical inoperable, or oropharynx, hypopharynx, or larynx with disease clinical staged as T3-4, without metastasis disease. ECOG performance status 0 or 1 and adequate bone marrow, renal, and hepatic function. Dose limiting toxicity (DLT) - The DLTs are related to PEP503, injection procedure, or concurrent chemo radiation therapy and occur in the DLT evaluation period. The DLT evaluation period starts from the intratumor injection of PEP503 to 4 weeks after the completion of radiation treatment. There are 6 levels (Level 1, Level 2, Level 3, Level 4, Level 3a and Level 5) in this phase 1b study. PEP503 will be given at the fixed concentration of 53.3g/L. The starting volume of PEP503 to be injected is 5% (Level 1) of the tumor volume confirmed by MRI.