Browsing by Subject "Ductal carcinoma in situ"

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    Tumor Infiltrating Lymphocytes in Multi-National Cohorts of Ductal Carcinoma In Situ (DCIS) of Breast
    (MDPI, 2022-08-13) Badve, Sunil S.; Cho, Sanghee; Lu, Xiaoyu; Cao, Sha; Ghose, Soumya; Thike, Aye Aye; Tan, Puay Hoon; Ocal, Idris Tolgay; Generali, Daniele; Zanconati, Fabrizio; Harris, Adrian L.; Ginty, Fiona; Gökmen-Polar, Yesim; Biostatistics, School of Public Health
    Tumor-infiltrating lymphocytes (TILs) are prognostic in invasive breast cancer. However, their prognostic significance in ductal carcinoma in situ (DCIS) has been controversial. To investigate the prognostic role of TILs in DCIS outcome, we used different scoring methods for TILs in multi-national cohorts from Asian and European women. Self-described race was genetically confirmed using QC Infinium array combined with radmixture software. Stromal TILs, touching TILs, circumferential TILs, and hotspots were quantified on H&E-stained slides and correlated with the development of second breast cancer events (BCE) and other clinico-pathological variables. In univariate survival analysis, age older than 50 years, hormone receptor positivity and the presence of circumferential TILs were weakly associated with the absence of BCE at the 5-year follow-up in all cohorts (p < 0.03; p < 0.02; and p < 0.02, respectively, adjusted p = 0.11). In the multivariable analysis, circumferential TILs were an independent predictor of a better outcome (Wald test p = 0.01), whereas younger age was associated with BCE. Asian patients were younger with larger, higher grade, HR negative DCIS lesions, and higher TIL variables. The spatial arrangement of TILs may serve as a better prognostic indicator in DCIS cases than stromal TILs alone and may be added in guidelines for TILs evaluation in DCIS.
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    Update on tumor-infiltrating lymphocytes (TILs) in breast cancer, including recommendations to assess TILs in residual disease after neoadjuvant therapy and in carcinoma in situ: A report of the International Immuno-Oncology Biomarker Working Group on Breast Cancer
    (Elsevier, 2017-10-09) Dieci, Maria Vittoria; Radosevic-Robin, Nina; Fineberg, Susan; van den Eynden, Gert; Ternes, Nils; Penault-Llorca, Frederique; Pruneri, Giancarlo; D’Alfonso, Timothy M.; Demaria, Sandra; Castaneda, Carlos; Sanchez, Joselyn; Badve, Sunil; Michiels, Stefan; Bossuyt, Veerle; Rojo, Federico; Singh, Baljit; Nielsen, Torsten; Viale, Giuseppe; Kim, Seong-Rim; Hewitt, Stephen; Wienert, Stephan; Loibl, Sybille; Rimm, David; Symmans, Fraser; Denkert, Carsten; Adams, Sylvia; Loi, Sherene; Salgado, Roberto; Pathology and Laboratory Medicine, School of Medicine
    Morphological evaluation of tumor-infiltrating lymphocytes (TILs) in breast cancer is gaining momentum as evidence strengthens the clinical relevance of this immunological biomarker. TILs in the post-neoadjuvant residual disease setting are acquiring increasing importance as a stratifying marker in clinical trials, considering the raising interest on immunotherapeutic strategies after neoadjuvant chemotherapy. TILs in ductal carcinoma in situ, with or without invasive carcinoma, represent an emerging area of clinical breast cancer research. The aim of this report is to update pathologists, clinicians and researchers on TIL assessment in both the post-neoadjuvant residual disease and the ductal carcinoma in situ settings. The International Immuno-Oncology Working Group proposes a method for assessing TILs in these settings, based on the previously published International Guidelines on TIL Assessment in Breast Cancer. In this regard, these recommendations represent a consensus guidance for pathologists, aimed to achieve the highest possible consistency among future studies.