Supplementary Table S1. H-scores of ICAM-1, VCAM-1 and IP-10 expression in tumors of melanoma patients before and after ipilimumab or Ipi-Bev treatment. Treatment Patient Tumor ICAM-1 VCAM-1 IP-10 Cancer EC Ipi-Bev P1 Pre 140 180 Post 120 90 30 P4 270 210 80 100 P9 200 20 P20 240 50 P27 300 P28 160 60 150 P31 Ipilimumab 260 P2 70 P3 40 N/A 110 P5 P6 H-scores were calculated by multiplying the percentage of positive cells with their intensity (1, 2 or 3). Cases with concomitant upregulation of ICAM-1and VCAM-1 in EC and IP-10 in tumor cells were highlighted.
Supplementary Table S2. CXCR3 expression on circulating CD4+ and CD8+ T cells before and after Ipi-Bev treatment. Patient P12 (CR) P8 (PR) P13 (PR) P27 (PR) P37 (SD) PBI-2 (SD) Serum Pre Post Post/Pre CD4+CXCR3+/CD4+ (%) 2.7 63.1 23.2 43.0 39.2 0.9 33.3 43.7 1.3 39.7 42.0 1.1 53.9 52.5 1.0 36.0 43.3 1.2 CD8+CXCR3+/CD8+ (%) 10.1 91.6 9.1 74.2 65.2 71.2 61.1 72.1 71.1 67.2 65.9 97.0 85.6 P10 (PD) P14 (PD) PMGH2 (PD) PBI-7 (PD) PBI-13 (PD) 61.7 53.4 57.9 65.5 41.8 55.2 28.6 35.4 14.3 13.0 60.2 58.8 80.3 75.9 70.1 75.4 84.3 69.0 0.8 30.0 24.8
Wilcoxon rank-sum p-value Supplementary Table S3. Pre-treatment serum levels of cytokines/chemokines were not associated with response (CR/PR vs. SD/PD/Uneval) to Ipi-Bev. Cytokines/ Chemokines BOR Wilcoxon rank-sum p-value SD/PD/Uneval CR/PR N Min Median Max EGF 35 0.3 134.7 509.3 8 23.7 170.0 282.7 0.89 EOTAXIN 3.2 79.3 196.5 49.0 74.0 177.8 0.87 FGF-2 1.2 48.2 131.6 52.5 80.9 0.68 GM-CSF 7.6 26.1 2.2 8.7 28.8 0.36 GRO 551.9 1648.6 231.7 517.6 693.3 0.55 G-CSG 3.1 21.1 114.4 44.0 97.6 0.17 IFNg 0.5 18.0 15.0 0.78 IL-8 18.2 296.5 12.8 110.7 IL-1a 0.4 6.3 307.8 1.9 15.1 0.63 IFNa2 0.8 7.3 94.9 10.9 19.7 0.74 IP-10 11.6 351.8 1563.1 244.3 381.7 2273.2 0.61 MCP-1 411.5 755.9 173.7 340.2 695.8 0.57 MDC 845.4 2171.9 483.1 783.8 1228.9 0.53 MIP-1b 25.5 102.2 2.4 29.6 57.6 0.96 TNFa 0.1 4.0 24.1 3.0 15.3 0.60 VEGF 71.5 331.7 77.1 142.5 0.79
Wilcoxon rank-sum p-value Supplementary Table S4. Pre-treatment serum levels of cytokines/chemokines were not associated with disease control (CR/PR/SD vs. PD/Uneval) in Ipi-Bev-treated patients. Cytokines/ Chemokines DCR Wilcoxon rank-sum p-value PD/Uneval CR/PR/SD N Min Median Max EGF 13 0.3 149.7 506.5 30 23.7 138.7 509.3 0.84 EOTAXIN 45.8 80.2 196.5 3.2 75.7 177.8 0.56 FGF-2 16.8 60.1 127.8 1.2 41.5 131.6 0.28 GM-CSF 4.2 7.6 26.1 7.4 28.8 0.27 GRO 55.1 541.2 1648.6 553.7 1288.3 0.78 G-CSG 8.0 37.0 114.4 3.1 22.1 111.1 0.29 IFNg 0.5 18.0 15.0 0.41 IL-8 1.7 17.4 243.1 18.5 296.5 0.64 IL-1a 13.7 307.8 0.4 4.9 49.2 0.10 IFNa2 4.3 15.5 94.9 0.8 6.3 26.3 0.01 IP-10 120.9 363.1 1552.3 11.6 351.7 2273.2 0.96 MCP-1 168.5 449.0 755.9 359.2 705.7 0.07 MDC 460.5 770.7 1149.3 883.3 2171.9 0.22 MIP-1b 10.7 35.4 86.4 2.4 24.9 102.2 0.16 TNFa 1.4 4.1 14.1 0.1 3.0 24.1 0.35 VEGF 33.8 94.6 211.1 65.0 331.7 0.25
Wilcoxon rank-sum p-value Supplementary Table S5. Fold-changes of serum cytokines/chemokines were not associated with response (CR/PR vs. SD/PD/Uneval) to Ipi-Bev. Cytokines/ Chemokines BOR Wilcoxon rank-sum p-value SD/PD/Uneval CR/PR N Min Median Max EGF 35 0.06 1.06 18.83 8 0.38 1.03 2.37 0.79 EOTAXIN 0.71 1.10 37.85 0.59 1.42 FGF-2 0.49 1.00 50.11 0.28 0.91 2.62 0.27 GM-CSF 0.35 4.15 0.32 0.88 1.95 0.57 GRO 0.56 1.29 194.8 0.73 1.23 2.68 0.55 G-CSG 0.15 8.13 1.04 3.63 0.50 IFNg 0.09 36.98 0.92 41.41 0.84 IL-8 0.04 1.72 19.50 0.14 1.17 15.51 0.61 IL-1a 0.43 1.16 16.14 2.82 14.51 0.18 IFNa2 0.26 1.24 10.11 1.98 10.45 0.69 IP-10 0.42 30.68 1.08 1.74 6.00 0.19 MCP-1 0.95 142.3 0.63 2.56 0.96 MDC 0.33 0.89 142.2 0.62 0.94 1.59 MIP-1b 0.21 1.11 14.70 0.68 1.18 4.04 TNFa 0.36 1.70 14.29 0.87 1.47 6.07 0.86 VEGF 0.07 12.17 0.11 0.82 1.91
Wilcoxon rank-sum p-value Supplementary Table S6. Fold-changes of serum cytokines/chemokines were not associated with disease control (CR/PR/SD vs. PD/Uneval) in Ipi-Bev-treated patients. Cytokines/ Chemokines DCR Wilcoxon rank-sum p-value PD/Uneval CR/PR/SD N Min Median Max EGF 13 0.23 1.00 18.83 30 0.06 1.08 3.50 0.74 EOTAXIN 0.76 1.07 1.34 0.59 1.10 37.85 0.50 FGF-2 0.57 3.11 0.28 50.11 0.55 GM-CSF 1.06 3.05 0.32 0.95 4.15 0.81 GRO 0.78 1.29 6.54 0.56 1.28 194.8 0.99 G-CSG 0.60 6.41 0.15 8.13 0.52 IFNg 4.71 0.09 41.41 0.96 IL-8 0.72 1.72 19.50 0.04 1.51 18.40 0.46 IL-1a 0.43 1.27 7.30 1.21 16.14 0.34 IFNa2 1.17 4.93 0.26 1.35 10.45 0.21 IP-10 0.42 1.20 6.33 0.65 1.59 30.68 0.38 MCP-1 0.62 0.92 1.63 142.3 0.93 MDC 0.45 0.85 0.33 0.94 142.2 0.14 MIP-1b 1.15 2.79 14.70 0.89 TNFa 0.49 1.70 6.62 0.36 1.68 14.29 VEGF 0.27 3.44 0.07 0.64 12.17
Fishers’ exact p-value Response by FLT-31 0.99 Response by fractalkine Supplementary Table S7. Response (CR/PR vs. SD/PD/Uneval) to Ipi-Bev by cytokine expression category. Comparison Fishers’ exact p-value Response by FLT-31 0.99 Response by fractalkine Response by IL-2 Response by IL-3 0.11 Response by IL-4 0.42 Response by IL-5 0.40 Response by IL-6 0.44 Response by IL-7 Response by IL-9 0.69 Response by IL-10 Response by IL-13 Response by IL-15 Response by IL-17 Response by IL-12p40 0.46 Response by IL-12p70 Response by IL-1b 0.70 Response by IL-1ra 0.22 Response by MCP-3 Response by MIP-1a Response by TGFa Response by TNFb Response by SIL-2ra Response by sCD40L 0.31
Supplementary Table S8. Disease control (CR/PR/SD vs Supplementary Table S8. Disease control (CR/PR/SD vs. PD/Uneval) in Ipi-Bev-treated patients by cytokine expression category. Comparison Fishers’ exact p-value Disease-control by FLT-31 0.14 Disease-control by fractalkine 0.49 Disease-control by IL-2 0.16 Disease-control by IL-3 0.99 Disease-control by IL-4 0.32 Disease-control by IL-5 0.73 Disease-control by IL-6 Disease-control by IL-7 Disease-control by IL-9 0.74 Disease-control by IL-10 0.33 Disease-control by IL-13 Disease-control by IL-15 Disease-control by IL-17 0.31 Disease-control by IL-12p40 Disease-control by IL-12p70 Disease-control by IL-1b Disease-control by IL-1ra Disease-control by MCP-3 0.02 Disease-control by MIP-1a Disease-control by TGFa 0.29 Disease-control by TNFb Disease-control by SIL-2ra 0.57 Disease-control by sCD40L
Wilcoxon rank- sum p-values Supplementary Table S9. Pre-treatment cytokine levels according to immune related adverse events (irAEs). N Mean Std Min Median Max Wilcoxon rank- sum p-values IFNa2 Severe irAE 31 14.2 16.6 0.8 11.0 94.9 0.01 No Yes 12 6.2 4.6 3.2 4.8 18.0 IL-1a 23.2 55.0 0.4 7.5 307.8 0.46 13.9 15.8 1.2 4.4 49.2 TNFa 5.6 5.4 4.1 24.1 0.21 3.8 4.0 0.1 15.3 GRO 617.7 360.9 580.9 1648.6 0.17 460.3 208.0 212.7 413.6 963.3 IP-10 515.9 406.1 11.6 373.2 1563.1 0.22 512.3 597.5 120.9 303.2 2273.2 IL-8 41.2 69.5 19.9 296.5 0.30 19.6 29.0 2.5 8.7 105.8
Wilcoxon rank-sum p-values Supplementary Table S10. Relationship between cytokine fold-changes according to irAEs. N Mean Std Min Median Max Wilcoxon rank-sum p-values IFNa2 Severe irAE 31 2.1 2.4 0.3 1.2 10.4 0.51 No Yes 12 1.9 1.1 0.7 1.8 4.0 IL-1a 3.1 4.3 0.4 16.1 0.56 3.0 3.8 0.5 1.4 13.5 TNFa 3.3 14.3 0.43 2.2 0.8 1.3 7.1 GRO 7.8 34.7 0.6 194.8 0.36 2.8 IP-10 5.6 1.5 30.7 0.70 2.3 1.6 6.0 IL-8 4.5 0.0 18.4 0.34 4.7 6.3 19.5
Supplementary Table S11. Clinical responses and survival of patients whose plasma samples were used in antibody response analyses. Patient Clinical Response Survival (months) Alive P6 Partial response 52 Yes P8 51
Cytokines / Chemokines Therapy Fisher’s Exact p-value Supplementary Table S12. Effects of ipilimumab alone and Ipi-Bev on circulating cytokine/chemokine levels. Cytokines / Chemokines Therapy Fisher’s Exact p-value Ipi-Bev Ipi N % IFNa2 25 58.1 14 60.9 0.78 FC <1.5 FC ≥ 1.5 16 37.2 7 30.4 IL-1a 20 46.5 4 17.4 0.36 18 41.9 1 4.3 TNFa 13 56.5 0.31 10 43.5 GRO 26 60.5 69.6 0.59 17 39.5 IP-10 21 48.8 15 65.2 0.3 22 51.2 8 34.8 IL-8 9 39.1 0.61