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- W2947996870 abstract "e13042 Background: Breast cancer (BC) recurrence is largely determined by cancer factors as well as host factors. It has been implicated that infiltrating immune cells play critical roles in long term survival. We hypothesize that immune cell infiltration profile rather than clinical characteristics or gene expression signatures of the primary tumors associate with the timing of cancer recurrence. Methods: 308 primary BCs in TCGA with cancer recurrence data was divided into; recurrence < 2 years (Early, n = 103), 2-5 years (Late, n = 20), and no recurrence > 5 years (Control, n = 185). 1410 primary BCs in METABRIC with BC specific death data was divided into; death < 10 years (Early Death, n = 499), death > 10 years (Late Death, n = 123), and survived > 10 years (Survivors, n = 788). Results: We found that Early tumors demonstrated more aggressive clinical characteristics such as larger tumor, more lymph node metastases, higher pathological grades, higher Stages, and negative estrogen and progesterone receptors, compared with Control tumors. On the other hand, no clinical characteristics of Late tumors were significantly different from Control tumors, which implicate that clinical characteristics cannot distinguish late recurrence from Control. Gene set enrichment analyses revealed that there was no significant gene sets that enriched with Early nor Late recurrence compared with Control, which implicate that gene expression signatures cannot distinguish recurrent tumor from Control. Utilizing CIBERSORT algorithm, we found that M1 was low and M2 was high macrophages in Early compared from Control. Further, anti-cancer lymphocytes, memory CD4 T cells and gamma delta T cells, were significantly lower, and pro-cancerous regulatory T cells were significantly higher in Early and Late compared from Control. In agreement, cytolytic activity score that assess immune cell killing were significantly lower in Early and Late compared from Control. Interestingly, only elevation of regulatory T cells was similar in METABRIC cohort when Early Death and Late Death were compared with Survivors. Conclusions: We found that not clinical characteristics or gene expression signatures, but pro-cancerous immune cells in primary BC associate with cancer recurrence and breast specific death." @default.
- W2947996870 created "2019-06-07" @default.
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- W2947996870 date "2019-05-20" @default.
- W2947996870 modified "2023-09-27" @default.
- W2947996870 title "Procancerous immune cells in primary tumor is associated with breast cancer recurrence." @default.
- W2947996870 doi "https://doi.org/10.1200/jco.2019.37.15_suppl.e13042" @default.
- W2947996870 hasPublicationYear "2019" @default.
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