Clinical Significance of Expression of Immunoadjuvant Molecules (LAG-3, TIM-3, OX-40) in Neoadjuvant Chemotherapy for Breast Cancer

乳腺癌 免疫佐剂 孕酮受体 免疫组织化学 癌症 内科学 雌激素受体 医学 三阴性乳腺癌 肿瘤科 免疫系统 受体 癌症研究 生物
作者
Yuka Asano,Shinichiro Kashiwagi,Koji Takada,Sae Ishihara,Wataru Goto,Tamami Morisaki,Masatsune Shibutani,Hiroaki Tanaka,Kosei Hirakawa,Masaichi Ohira
出处
期刊:Anticancer Research [International Institute of Anticancer Research (IIAR) Conferences 1997. Athens, Greece. Abstracts]
卷期号:42 (1): 125-136
标识
DOI:10.21873/anticanres.15466
摘要

Background/Aim: Various immunosuppressive factors that inhibit the immune response to cancer are present in cancer cells and the cancer microenvironment. Co-inhibitory and co-stimulatory receptors are dynamically expressed on T-cells as immunoadjuvant molecules that regulate the state of T-cell activity. In this report we focus on immunoadjuvant molecules such as LAG-3, TIM-3, and OX-40, for which there have been few published reports. We investigated the expression of LAG-3, TIM-3 and OX-40 in tumor-infiltrating lymphocytes (TILs), and clinically verified the significance of that expression in relation to neoadjuvant thermotherapy (NAC). Patients and Methods: A total of 177 patients with resectable early-stage breast cancer were treated with NAC. Estrogen receptor (ER), progesterone receptor (PgR), human epidermal growth factor receptor 2 (HER2), Ki67, LAG-3, TIM-3 and OX-40 status were assessed by immunohistochemistry. Results: The group with low-LAG-3 expression was significantly smaller than the group with high expression in triple-negative breast cancer (TNBC) (p=0.038) and HER2-enriched breast cancer (HER2BC) (p=0.021), while the total number of pathological complete response (pCR) patients was greater (p<0.001). In TNBC and HER2BC, the pCR rate was significantly higher in the low-LAG-3 expression group than in the high-LAG-3 expression group (p<0.001 and p=0.02, respectively). Moreover, on multivariate analysis low-LAG-3 expression status was an independent predictor of favorable prognosis (TNBC: p=0.014, HR=8.124; HER2BC: p=0.048, HR=10.400). Conclusion: Our findings suggest that LAG-3 may become a biomarker in highly malignant breast cancers such as TNBC and HER2BC that can predict the therapeutic efficacy of NAC.
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