Supplementary Figures Supplementary Figure 1. Immune cell counts for perforin 1 (PRF1) and TIA1 compared to granzyme B (GZMB) in EBV+ (EBV+ PT-DLBCL) and EBV- post-transplant diffuse large Bcell lymphoma (EBV- PT-DLBCL) and EBV- diffuse large B-cell lymphoma in immunocompetent individuals (EBV- IC-DLBCL) A B A. In all subgroups granzyme B (GRZB), perforin 1 (PRF1) and TIA1-positive cells were present. Compared to GRZB, PRF1-positive cells were less abundant however none of these comparisons were statistically significant (determined by a non-parametric t-test). In contrast, TIA1-positive cells were as or more abundant than GRZB-positive cells. B. GZMB, PRF1 and TIA1 staining of a case of EBV-positive post-transplant diffuse large B-cell lymphoma (case 4). Images were taken at 400x with a Leica microscope. Supplementary Figure 2. PDL1 was overexpressed in EBV+ post-transplant DLBCL (cases 5 and 22) compared to EBV- post-transplant DLBCL (cases 29 and 32). PDL1 was expressed in tumor cells as well as macrophages. Images were taken at 200x with a Leica microscope. Case 5 Case 22 Case 29 Case 32 Supplementary Figure 3. Double staining for ZEBRA (red) and CD138 (brown) (case 19) did not reveal co-expressing cells in EBV+ PT-DLBCL. The image was taken at 400x using a Leica microscope. Supplementary Figure 4. Kaplan-Meier survival analysis demonstrated poor outcome of IgM+ PT-DLBCL compared to IgM- PT-DLBCL. Statistically significant comparisons were -EBV+ PT-DLBCL/IgM+ versus EBV+ PT-DLBCL/IgM- (log-rank p-value 0.07; Wilcoxon pvalue 0.04) -EBV+ PT-DLBCL/IgM+ versus EBV- IC-DLBCL (log-rank p-value 0.016; Wilcoxon p-value 0.004) Supplementary Tables Supplementary Table 1. Antibodies and staining conditions Antibody Clone, company Dilution; pretreatment pH Ki67 MIB1, Dako RTU; high MUM1 MUM1p, Dako RTU; high CD138 MI15, Dako RTU, high Kappa Kappa Light Chains, Dako RTU; low Lambda Lambda Light Chains, Dako RTU; low IgM R1/69, Dako 1/500; high IgD IgD26, Dako 1/20; high IgG Anti-Human IgG, Dako 1/500; low IgA Anti-Human IgA, Dako RTU; low MDR1 ABCB1, Sanbio 1/200; high CD3 CD3E, Dako RTU; high CD4 4B12, Dako RTU; high CD8 C8/144B, Dako RTU; low FOXP3 FOXP3, Abcam 1/200; high GRZB GrB-7, Dako 1/50; low CD56/NCAM1 123C3, Dako 1/50; high CD68 PGM1, Dako RTU; low CD163 10D6, Novocastra 1/100; low PDL1 SP263, Roche RTU; low PD1 NAT105; Abcam 1/100; high LMP1 CS1-4, Abcam RTU; low EBNA2 PE2, Abcam 1/50; high Supplementary Table 2. Summary of clinicopathological data of our series of EBV- DLBCL in transplant recipients and immunocompetent individuals Case Cytopl IgM (%) Cytopl IgD (%) SHM Ki67 (%) MUM1 (%) CD138 Tumor (%) Cytopl Kappa /Lambda (%) Cytopl IgG (%) EBV- non-GCB PT-DLBCL 24 ND ND 0 ND 80 ND 0 ND ND ND failed ND 0 ND 10 5 0 5 0 NR 25 10 26 0 failed 80 5 0 10 27 10 0 0 ND ND ND 0 0 28 0 0 ND 80 0 ND 29 0 0 ND 100 80 ND 10 0 30 50 0 ND 90 90 2 0 31 80 0 5 0 failed 90 ND 0 SHM 95 90 ND 0 ND 10 34 ND 0 ND 35 0 0 36 37 ND 0 38 0 ND 0 20 0 0 0 20 0 0 0 0 5 0 0 ND 20 0 0 50 ND 0 ND 0 ND 20 5 ND 0 0 0 0 ND 10 10 ND NR ND 0 ND 20 10 ND 0 NR 0 0 0 ND 40 0 ND 0 39 0 0 ND ND 5 1 20 0 0 5 0 40 0 0 ND 80 5 0 0 0 0 41 0 0 ND ND 5 0 0 0 0 42 ND ND 30 ND ND ND 43 0 5 0 ND 10 0 ND 0 ND 0 ND 0 ND 50 5 0 0 NR ND 80 10 ND 10 0 0 45 20 0 0 0 NR 46° 0 0 ND 75 80 0 0 0 0 47° NR ND NR 0 0 5 ND 50 0 ND 0 5 0 NR 0 32° EBV- non-GCB IC-DLBCL 33 44 5 0 48° 0 NR 0 49° 10 0 ND 80 20 0 10 0 0 50° 0 0 ND 90 20 0 0 0 0 51° ND 0 ND 80 40 0 NR NR ND °these cases were not previously reported Supplementary Table 3. Comparison of the clinical features of post-transplant diffuse large B-cell lymphoma cases in this study and archived biopsy-confirmed post-transplant lymphoproliferative disorder biopsies Age at diagnosis (years) PTLD Median Range Gender Female Male Transplanted organ HSC Heart (-lung) Kidney Kidney-pancreas Liver Liver-pancreas Lung Time between transplantation and PTLD Median (years) Range (years) EBV status of the tumor Negative Positive Not available PT-DLBCL included in this series (n = 32) Total series of biopsyconfirmed PTLD (n = 231) 42 2-78 54 2-83 41% 59% 25% 75% 32% 13% 42% 0 6% 0 6% 13% 19% 36% 2% 16% 1% 11% 0,33 0-20 4 0-35 28% 72% / 31.5% 61.5% 7% Abbreviations: EBV, Epstein-Barr virus; HSC, hematopoietic stem cells; PT-DLBCL, post-transplant diffuse large B-cell lymphoma; PTLD, post-transplant lymphoproliferative disorder
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