FIGURE 5 from Immuno-PET Imaging of CD69 Visualizes T-Cell Activation and Predicts Survival Following Immunotherapy in Murine Glioblastoma

Immuno-PET of 89Zr-DFO-CD69 Ab as a prognostic predictor after ICI treatment in a GBM mouse model. Survival follow-up of mice inoculated with GL261 cells, and evaluated by immuno-PET of 89Zr-DFO-CD69 Ab, comparing treatment (ICI) group to control group (represented by orange and blue dots, respectively). A, Schematic showing timeline of tumor inoculation, ICI treatment, MRI, tail vein injection of 89Zr-DFO-CD69 Ab, immuno-PET, and survival follow-up. B, The overall survival (OS) rates of the ICI-treated group and control group are plotted using Kaplan–Meier survival curves, with log-rank (Mantel–Cox) curve comparison test. C, Right, heat map display of Pearson correlation coefficient analysis between immuno-PET signals and survival in the two groups. Results are shown for each SUV measurement method (SUVmax, SUVmax TBR, SUVmean, and SUVmean TBR) in each immuno-PET designated time point (days 1, 2, 3, 4, and 6). Shown are representative data of two independent experiments, n = 4–5 mice per group (*, P P max and SUVmax TBR. Scattered dots represent individual mice, n = 4–5 mice per group.