Local Progression or Metastatic Melanoma With Failed First-line Treatment Clinical Trial
Official title:
Phase Ib/II, Open Label, Controlled Clinical Study of Pexa-Vec (Vaccinia GM CSF / Thymidine Kinase-Deactivated Virus) Combined With Recombinant Whole Human Anti-PD-L1 Monoclonal Antibody (ZKAB001) in Metastatic Melanoma After First-line Treatment Failure
The study will be divided into two stages: phase Ib and phase II. The safety and phase II recommended dose (RP2D) of Pexa-Vec combined with ZKAB001 in patients with local progression of failed first-line treatment or metastatic melanoma will be evaluated in phase Ib. Objective response rate (ORR) and progression-free survival (PFS) of ZKAB001 combined with RP2D's Pexa-Vec or ZKAB001 monotherapy in patients with local progression or metastatic melanoma will be evaluated in phase II.
The study will be divided into two stages: phase Ib and phase II. The safety and phase II recommended dose (RP2D) of Pexa-Vec combined with ZKAB001 in patients with local progression of failed first-line treatment or metastatic melanoma will be evaluated in phase Ib. Objective response rate (ORR) and progression-free survival (PFS) of ZKAB001 combined with RP2D's Pexa-Vec or ZKAB001 monotherapy in patients with local progression or metastatic melanoma will be evaluated in phase II. The study is also going to evaluate the combination therapy or monotherapy: 1. overall survival time ((OS)), disease control rate (DCR) and duration of remission (DOR) in patients with metastatic melanoma. 2. safety 3. the relationship between the expression of PD-L1 in tumor tissue and clinical effect； 4. the changes of immune microenvironment (CD8+ expression) in tumor tissue before and after Pexa-vec treatment. ;