Pembrolizumab-PET Imaging

In part A of the imaging trial, a dose finding imaging study will be performed to assess the optimal tracer protein dose of 89Zr-pembrolizumab and the optimal interval between tracer injection and scanning. Approximately 3 cohorts of about 2-3 patients each will undergo 89Zr-pembrolizumab-PET imaging before start of treatment with pembrolizumab. In part B, 12 eligible patients will undergo 89Zr-pembrolizumab-PET imaging at baseline, with the optimal tracer protein dose and scanning schedule as determined in part A.

In part A of the imaging trial, a dose finding imaging study will be performed to assess the optimal tracer protein dose of 89Zr-pembrolizumab and the optimal interval between tracer injection and scanning. Approximately 3 cohorts of about 2-3 patients each will undergo 89Zr-pembrolizumab-PET imaging before start of treatment with pembrolizumab. In part B, 12 eligible patients will undergo 89Zr-pembrolizumab-PET imaging at baseline, with the optimal tracer protein dose and scanning schedule as determined in part A.