Figure 3.
Baseline tumor characteristics in clinical responders and nonresponders. A, TMB and (B) predicted neoantigen in all patients with available baseline biopsy. C, Baseline multiplex immunofluorescence staining of T cells (CD4+ and CD8+), regulatory CD4 T cells (CD4+/FoxP3+), granzyme B+, hTERT+, Ki67+, and melanoma cells (Sox10+/S100+). Two samples with no Sox10/S100 stained cells were excluded from the analysis of co-staining melanoma cells and hTERT and Ki67. D, Among all available biopsies (both baseline and week 14), there was a significant correlation between signal intensity of Ki67 and TERT within melanoma cells (simple linear regression, R2 = 0.267; P = value 0.002). E, Baseline levels of the 18-gene IFNγ gene signature expression according to iRECIST category. Heat map shows the calculated z-score, representing the relative expression levels across patient samples. Unless otherwise described, all reported P values represent results from the unpaired nonparametric test (Mann–Whitney). ND, not detected. R, clinical responder. NR, clinical nonresponders.