PD-L1 expression and tumor-infiltrating lymphocytes: Correlations and prognostic values in Chinese triple-negative breast cancer patients with different molecular subtyping.
Pathol Res Pract
; 262: 155556, 2024 Oct.
Article
in En
| MEDLINE
| ID: mdl-39216323
ABSTRACT
OBJECTIVE:
To investigate the correlation between programmed death ligand-1 (PD-L1) expression and tumor-infiltrating lymphocytes (TILs) and evaluate the prognostic value of PD-L1 and TILs in Chinese triple-negative breast cancer (TNBC) patients with different molecular subtypeMETHODS:
This retrospective study was conducted at 2020. Specifically, the pre-chemotherapy clinical data and non-stained tissue blocks of 465 TNBC patients visited the Fudan University Shanghai Cancer Center (FUSCC) between 2008 and 2014 were collected, with their blocks sliced and stained using PD-L1(SP142), and the outcome of subsequent chemotherapy obtained in 2020. The relapse-free survival (RFS) of the study population was calculated. The baseline PD-L1 expression status correlations with TILs and molecular subtypes were assessed using Spearman's rank correlation analysis and the Kruskal-Wallis test. Kaplan-Meier survival analyses were undertaken to evaluate the prognosis value of TILs and PD-L1 expression.RESULTS:
PD-L1 expression status on IC was moderately and positively correlated with stromal tumor-infiltrating lymphocytes (sTILs) (rs = 0.502, P <0.001) and iTILs (rs = 0.410, P < 0.001), respectively. PD-L1 expression status and TILs showed significant differences among molecular subtypes (P < 0.001), with the highest proportion of PD-L1+ and high TILs patients observed in the immunomodulatory (IM) subtype. TILs were significantly associated with RFS. Moreover, sTILs could act as an independent predictor of RFS (RR 0.953, 95â¯% CI 0.920 â¼ 0.987, P = 0.007), while PD-L1 expression status did not show the same prognostic significance.CONCLUSIONS:
The incorporation of pre-treatment TILs and PD-L1 expression status as valuable tools for optimizing patient selection for immunotherapy and managing the risks associated with chemotherapy in Chinese TNBC patients. DATAAVAILABILITY:
The data sets generated and analyzed during the current study are available from the corresponding author.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Biomarkers, Tumor
/
Lymphocytes, Tumor-Infiltrating
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B7-H1 Antigen
/
Triple Negative Breast Neoplasms
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Middle aged
Country/Region as subject:
Asia
Language:
En
Journal:
Pathol Res Pract
/
Pathol. res. pract
/
Pathology research and practice (Print)
Year:
2024
Document type:
Article
Country of publication:
Alemania