Author:
Tong Yiwei,Huang Jiahui,Ren Weili,Yu Jing,Zhang Xu,Wang Zheng,Hong Jin,Gao Weiqi,Wu Jiayi,Ji Min,Shen Kunwei,Chen Xiaosong
Abstract
Abstract
Introduction
Tumor immune microenvironment (TIME) plays a vital role in breast cancer development, treatment resistance, and prognosis. This study evaluates the association of TIME profiling and 21-gene recurrence score (RS) in early Luminal breast cancer patients.
Methods
ER+ /HER2-, pN0 breast cancer patients with available RS results who received surgery between January 2009 and December 2013 were enrolled. TIME markers, including stromal tumor infiltrating lymphocytes (TILs), CD3, CD4, CD8, and tumor PD-L1 expression, were comprehensively analyzed. Association of TIME markers with RS, as well as their correlation with breast cancer-specific survival (BCSS) were tested.
Results
Overall, 385 patients were included, of whom 341 (88.6%) had TILs ≤10%. TIME markers were positively but moderately correlated with each other (Spearman r 0.28–0.53, all P < 0.05). Continuous RS showed a weak correlation with continuous TILs, CD3, CD8, and PD-L1. Regarding single gene mRNA level in the 21-gene RS panel, higher expression of TIME markers was related to lower ER group genes expression, but higher proliferation and invasion group genes level. After a median follow-up of 91.67 (range 5.03–134.03) months, TILs (P = 0.049) and PD-L1 (P = 0.034) were inversely associated with BCSS.
Conclusions
Breast cancer TIME markers, including TILs, CD3, CD4, CD8, and PD-L1, were correlated with 21-gene RS score. Lower expression of ER group genes, as well as higher expression of proliferation and invasion group genes were associated with a higher level of these TIME markers, warranting further exploration.
Funder
Shanghai Sailing Program
Shanghai Jiao Tong University Yi Gong Jiao Cha Funding
National Natural Science Foundation of China
Shanghai Municipal Education Commission
Publisher
Springer Science and Business Media LLC
Cited by
1 articles.
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