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Prognostic roles for IL ‐2‐producing and CD 69 + T cell subsets in colorectal cancer patients
Author(s) -
Taylor Edward S.,
McCall John L.,
Shen Shirley,
Girardin Adam,
Munro Fran M.,
Black Michael A.,
WardHartstonge Kirsten A.,
Kemp Roslyn A.
Publication year - 2018
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/ijc.31598
Subject(s) - colorectal cancer , medicine , t cell , flow cytometry , immunotherapy , immune system , cancer , disease , immunology , oncology , cancer research
Tumor infiltrating T cells are a predictor of patient outcome in patients with colorectal cancer (CRC). However, many T cell populations have been associated with both poor and positive patient prognoses, indicating a need to further understand the role of different T cell subsets in CRC. In this study, the T cell infiltrate from the tumor and nontumor bowel (NTB) was examined in 95 CRC patients using flow cytometry and associations with cancer stage and disease recurrence made. Our findings showed that IFN‐γ‐producing T cells were associated with positive patient outcomes, and CD69 + T cells were associated with disease recurrence. Inflammatory (IL‐17) and regulatory T cells were not associated with disease recurrence. Surprisingly, in a second cohort of 32 patients with long‐term clinical follow up data, tumor infiltrating IL‐2‐producing T cells correlated negatively with disease free survival (DFS) and a higher frequency of IL‐2‐producing T cells was found in the NTB of patients with poorly differentiated tumors. These results point toward the possibility of a negative impact of IL‐2 in tumor immune responses, which may influence future immunotherapy treatments in CRC patients.