Can Tumor-Infiltrating Lymphocytes (TILs) Be a Predictive Factor for Lymph Nodes Status in Both Early Stage and Locally Advanced Breast Cancer?
Overview
Affiliations
The status of axillary lymph nodes is an important prognostic factor in the outcome of breast cancer tumors. New trials changed the attitude towards axillary clearance. In the era of development of new immune therapies for breast cancer, it is important to identify a biomarker that can predict lymph node status. Tumor-infiltrating lymphocytes (TILs) are a valuable indicator of the immune microenvironment that plays the central role in new anticancer drugs. Although the correlation between TILs and response to chemotherapy was established by previous studies, our retrospective study investigated the correlation between TILs and lymph node status. We analyzed data on 172 patients. According to stage, patients were divided in two groups: patients who underwent primary surgical treatment (breast-conserving or mastectomy and sentinel lymph node (SLN) biopsy +/- axillary clearance in conformity with lymph node status) and patients who received chemotherapy prior to surgical treatment (breast-conserving or mastectomy + axillary clearance). We showed a good inverse correlation between TILs and lymph nodes status for both early stage and locally advanced breast cancers. Moreover, TILs are a predictor for positive lymph nodes in the axilla in patients undergoing axillary clearance after SLN biopsy, with no statistical difference between the intrinsic or histological subtype of breast cancers. We also obtained a significant correlation between TILs and response to chemotherapy with no significative difference according to histological subtype. Although further data have still to be gathered before meeting the criteria for clinical utility, this study demonstrates that TILs are one of the most accredited forthcoming biomarkers for breast cancer (BC) patients.
Xu X, Wang Y, Wang Q, Lv S, Mao G Ann Med Surg (Lond). 2024; 86(10):5767-5775.
PMID: 39359848 PMC: 11444635. DOI: 10.1097/MS9.0000000000002256.
The role of tumor-infiltrating lymphocytes in cholangiocarcinoma.
Liu D, Heij L, Czigany Z, Dahl E, Lang S, Ulmer T J Exp Clin Cancer Res. 2022; 41(1):127.
PMID: 35392957 PMC: 8988317. DOI: 10.1186/s13046-022-02340-2.
Takada K, Kashiwagi S, Asano Y, Goto W, Kouhashi R, Yabumoto A BMC Womens Health. 2021; 21(1):225.
PMID: 34051785 PMC: 8164786. DOI: 10.1186/s12905-021-01373-7.
The expression and prognostic value of the epidermal growth factor receptor family in glioma.
Xu B, Huo Z, Huang H, Ji W, Bian Z, Jiao J BMC Cancer. 2021; 21(1):451.
PMID: 33892666 PMC: 8063311. DOI: 10.1186/s12885-021-08150-7.
Prediction of lymph node metastasis by tumor-infiltrating lymphocytes in T1 breast cancer.
Takada K, Kashiwagi S, Asano Y, Goto W, Kouhashi R, Yabumoto A BMC Cancer. 2020; 20(1):598.
PMID: 32590956 PMC: 7318528. DOI: 10.1186/s12885-020-07101-y.