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Fig. 5. Serum VEGF-C correlates with antitumor immune responses and PFS after immunotherapy in human metastatic melanoma patients. Serum VEGF-C correlates.

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Presentation on theme: "Fig. 5. Serum VEGF-C correlates with antitumor immune responses and PFS after immunotherapy in human metastatic melanoma patients. Serum VEGF-C correlates."— Presentation transcript:

1 Fig. 5. Serum VEGF-C correlates with antitumor immune responses and PFS after immunotherapy in human metastatic melanoma patients. Serum VEGF-C correlates with antitumor immune responses and PFS after immunotherapy in human metastatic melanoma patients. (A to C) Correlations of magnitude and quality of T cell responses with serum VEGF-C concentrations (n = 20) in patients enrolled in a phase 1 clinical study (NCT ) evaluating an antitumor Melan-A/MART-1 peptide vaccine. T cell responses reflect peak values across four weekly blood samples in Melan-A tetramer+ CD8+ T cells, and serum VEGF-C was measured before therapy. (A) Antigen-specific T cells as % of circulating CD8+ T cells versus serum VEGF-C. Left: Absolute values for each patient (dotted line indicates mean VEGF-C). Right: Comparison of T cell numbers in patients with low (<mean) versus high (>mean) VEGF-C. (B) IFN-α expression and (C) polyfunctionality in terms of IFN-α, TNF-α (tumor necrosis factor–α), IL-2 (interleukin-2), and CD107 expression in tetramer+ CD8+ T cells. (D) PFS of human melanoma patients (n = 76) enrolled in a phase 2 clinical study (NCT ) receiving combined αPD-1 and αCTLA-4 checkpoint blockade. Patients were stratified into three groups (high, mid, low) according to serum VEGF-C, VEGF-D, and VEGF-A concentrations measured before immunotherapy. Groups were compared using a nonparametric Spearman’s test for correlations, two-tailed Student’s t test for dot plots (*P < 0.05), and log-rank (Mantel-Cox) test for survival curves. Manuel Fankhauser et al., Sci Transl Med 2017;9:eaal4712 Published by AAAS


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