American Association for Cancer Research
10780432ccr152834-sup-158558_1_supp_0_k2pmnk.xlsx (62.13 kB)

Supplementary table 3c from Pan-Cancer Immunogenomic Perspective on the Tumor Microenvironment Based on PD-L1 and CD8 T-Cell Infiltration

Download (62.13 kB)
posted on 2023-03-31, 19:20 authored by Chan-Young Ock, Bhumsuk Keam, Sehui Kim, Ju-Seog Lee, Miso Kim, Tae Min Kim, Yoon Kyung Jeon, Dong-Wan Kim, Doo Hyun Chung, Dae Seog Heo

Supplementary table 3c. Specific deletion of cancer driver genes to predict tumor microenvironment immune types



Innovative Research Institute for Cell Therapy, Republic of Korea



Purpose: There is currently no reliable biomarker to predict who would benefit from anti-PD-1/PD-L1 inhibitors. We comprehensively analyzed the immunogenomic properties in The Cancer Genome Atlas (TCGA) according to the classification of tumor into four groups based on PD-L1 status and tumor-infiltrating lymphocyte recruitment (TIL), a combination that has been suggested to be a theoretically reliable biomarker of anti-PD-1/PD-L1 inhibitors.Experimental Design: The RNA expression levels of PD-L1 and CD8A in the samples in the pan-cancer database of TCGA (N = 9,677) were analyzed. Based on their median values, the samples were classified into four tumor microenvironment immune types (TMIT). The mutational profiles, PD-L1 amplification, and viral association of the samples were compared according to the four TMITs.Results: The proportions of TMIT I, defined by high PD-L1 and CD8A expression, were high in lung adenocarcinoma (67.1%) and kidney clear cell carcinoma (64.8%) among solid cancers. The number of somatic mutations and the proportion of microsatellite instable-high tumor in TMIT I were significantly higher than those in other TMITs, respectively (P < 0.001). PD-L1 amplification and oncogenic virus infection were significantly associated with TMIT I, respectively (P < 0.001). A multivariate analysis confirmed that the number of somatic mutations, PD-L1 amplification, and Epstein–Barr virus/human papillomavirus infection were independently associated with TMIT I.Conclusions: TMIT I is associated with a high mutational burden, PD-L1 amplification, and oncogenic viral infection. This integrative analysis highlights the importance of the assessment of both PD-L1 expression and TIL recruitment to predict responders to immune checkpoint inhibitors. Clin Cancer Res; 22(9); 2261–70. ©2016 AACR.See related commentary by Schalper et al., p. 2102

Usage metrics

    Clinical Cancer Research



    Ref. manager