Reproducibility and predictive value of scoring stromal tumour infiltrating lymphocytes in triple-negative breast cancer a multi-institutional study /

BACKGROUND: Several studies have demonstrated a prognostic role for stromal tumour infiltrating lymphocytes (sTILs) in triple-negative breast cancer (TNBC). The reproducibility of scoring sTILs is variable with potentially excellent concordance being achievable using a software tool. We examined agr...

Teljes leírás

Elmentve itt :
Bibliográfiai részletek
Szerzők: O'Loughlin Mark
Andreu Xavier
Bianchi Simonetta
Chemielik Ewa
Cordoba Alicia
Cserni Gábor
Kulka Janina
Dokumentumtípus: Cikk
Megjelent: 2018
Sorozat:BREAST CANCER RESEARCH AND TREATMENT 171 No. 1
doi:10.1007/s10549-018-4825-8

mtmt:3376690
Online Access:http://publicatio.bibl.u-szeged.hu/14419
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520 3 |a BACKGROUND: Several studies have demonstrated a prognostic role for stromal tumour infiltrating lymphocytes (sTILs) in triple-negative breast cancer (TNBC). The reproducibility of scoring sTILs is variable with potentially excellent concordance being achievable using a software tool. We examined agreement between breast pathologists across Europe scoring sTILs on H&E-stained sections without software, an approach that is easily applied in clinical practice. The association between sTILs and response to anthracycline-taxane NACT was also examined. METHODOLOGY: Pathologists from the European Working Group for Breast Screening Pathology scored sTILs in 84 slides from 75 TNBCs using the immune-oncology biomarker working group guidance in two circulations. There were 16 participants in the first and 19 in the second circulation. RESULTS: Moderate agreement was achieved for absolute sTILs scores (intraclass correlation coefficient (ICC) = 0.683, 95% CI 0.601-0.767, p-value < 0.001). Agreement was less when a 25% threshold was used (ICC 0.509, 95% CI 0.416-0.614, p-value < 0.001) and for lymphocyte predominant breast cancer (LPBC) (ICC 0.504, 95% CI 0.412-0.610, p-value < 0.001). Intra-observer agreement was strong for absolute sTIL values (Spearman rho = 0.727); fair for sTILs >/= 25% (kappa = 0.53) and for LPBC (kappa = 0.49), but poor for sTILs as 10% increments (kappa = 0.24). Increasing sTILs was significantly associated with an increased likelihood of a pathological complete response (pCR) on multivariable analysis. CONCLUSION: Increasing sTILs in TNBCs improves the likelihood of a pCR. However, inter-observer agreement is such that H&E-based assessment is not sufficiently reproducible for clinical application. Other methodologies should be explored, but may be at the cost of ease of application. 
700 0 1 |a Andreu Xavier  |e aut 
700 0 1 |a Bianchi Simonetta  |e aut 
700 0 1 |a Chemielik Ewa  |e aut 
700 0 1 |a Cordoba Alicia  |e aut 
700 0 1 |a Cserni Gábor  |e aut 
700 0 1 |a Kulka Janina  |e aut 
856 4 0 |u http://publicatio.bibl.u-szeged.hu/14419/1/3376690.pdf  |z Dokumentum-elérés