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ABSTRACT: Background
Immune cells in the tumour microenvironment play an essential role in tumorigenesis. This study aimed to evaluate the immunoregulatory protein expression of breast cancer and reveal their prognostic role.Methods
Expression of 10 immune markers (PD-1/PD-L1/PD-L2/IDO/TIM-3/OX40/OX40L/B7-H2/ B7-H3/B7-H4) with known/possible clinical relevance was identified in stromal tumour-infiltrating lymphocytes or tumour tissue of stage I-III breast cancer patients.Results
A total of 392 patients, including 271(69.1%) luminal A, 36(9.2%) luminal B, 32(8.2%) HER2-positive and 53(13.5%) triple negative disease, were included. Expression of PD-1 and PD-L1 was higher in HER2-positive and triple negative disease. By contrast, expression of TIM-3, OX40 and OX40L were higher in luminal disease. We devised an immune recurrence score (IRS) using seven markers with prognostic value (B7-H2/B7-H3/B7-H4/OX40/OX40L/PD-L1/PD-L2). Patients were classified as high-risk (7.9%), intermediate-risk (67.6%), or low-risk (24.5%). In the multivariate analysis, IRS low-risk (adjusted HR 0.14, p = 0.001) and intermediate-risk (adjusted HR 0.32, p = 0.002) had significantly lower risk of recurrence compared with high-risk. The prognostic role of IRS was maintained in both luminal A and non-luminal A patients.Conclusions
This study identified immunoregulatory protein expression of breast cancer patients using 10 immune markers. In addition, we devised an IRS which may predict recurrence in stage I-III breast cancer patients.
SUBMITTER: Lee DW
PROVIDER: S-EPMC6738097 | biostudies-literature | 2019 Jul
REPOSITORIES: biostudies-literature
Lee Dae-Won DW Ryu Han Suk HS Jin Min-Sun MS Lee Kyung-Hun KH Suh Koung Jin KJ Youk Jeonghwan J Kim Jung Youn JY Min Ahrum A Lee Han-Byoel HB Moon Hyeong-Gon HG Kim Tae-Yong TY Han Sae-Won SW Oh Do-Youn DY Han Wonshik W Park In Ae IA Noh Dong-Young DY Im Seock-Ah SA
British journal of cancer 20190711 3
<h4>Background</h4>Immune cells in the tumour microenvironment play an essential role in tumorigenesis. This study aimed to evaluate the immunoregulatory protein expression of breast cancer and reveal their prognostic role.<h4>Methods</h4>Expression of 10 immune markers (PD-1/PD-L1/PD-L2/IDO/TIM-3/OX40/OX40L/B7-H2/ B7-H3/B7-H4) with known/possible clinical relevance was identified in stromal tumour-infiltrating lymphocytes or tumour tissue of stage I-III breast cancer patients.<h4>Results</h4>A ...[more]