Padma Sheila Rajagopal, Sonya Reid, Run Fan, Lindsay Venton, Anne Weidner, Mya L Roberson, Susan Vadaparampil, Xuefeng Wang, Sean Yoder, Marilin Rosa, Melinda Sanders, Paula Gonzalez-Ericsson, Jibril Hirbo, Jennifer G Whisenant, Jennifer Pietenpol, Fei Ye, Tuya Pal, Brian D Lehmann
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引用次数: 0
Abstract
We determined triple-negative breast cancer (TNBC) subtypes, genetic ancestry, and immune features in a cohort of self-reported Black females with TNBC diagnosed at or below age 50. Among 104 tumors, 34.6% were basal-like 1 (BL1), 17.3% basal-like 2 (BL2), 9.6% luminal androgen receptor (LAR), 26.9% mesenchymal (M), and 11.5% unsubtyped (UNS). Subtypes resembled those seen in Europeans or East Asians, with less LAR (9.6% vs. 14.6-24.4%) and more UNS (11.5% vs. 0-7.5%). "High" proportion of West African ancestry was associated with more LAR (14.9% vs. 4.9%) and less M (25.5% vs. 34.2%). M demonstrated reduced immune activity and was marginally associated with worse overall survival in a multivariate model including stage, West African ancestry, BMI, and TILs, meriting future research. Our study is the largest to date of TNBC subtypes in young Black females. These results reinforce TNBC subtypes' application across populations and potential use as a prognostic biomarker.
期刊介绍:
npj Breast Cancer publishes original research articles, reviews, brief correspondence, meeting reports, editorial summaries and hypothesis generating observations which could be unexplained or preliminary findings from experiments, novel ideas, or the framing of new questions that need to be solved. Featured topics of the journal include imaging, immunotherapy, molecular classification of disease, mechanism-based therapies largely targeting signal transduction pathways, carcinogenesis including hereditary susceptibility and molecular epidemiology, survivorship issues including long-term toxicities of treatment and secondary neoplasm occurrence, the biophysics of cancer, mechanisms of metastasis and their perturbation, and studies of the tumor microenvironment.