scholarly journals The clinical impact of tumour-infiltrating lymphocytes in colorectal cancer differs by anatomical subsite: A cohort study

2017 ◽  
Vol 141 (8) ◽  
pp. 1654-1666 ◽  
Author(s):  
Jonna Berntsson ◽  
Maria C Svensson ◽  
Karin Leandersson ◽  
Björn Nodin ◽  
Patrick Micke ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cohort Study ◽  
Clinical Impact ◽  
Tumour Infiltrating Lymphocytes ◽  
Infiltrating Lymphocytes

Tumour-infiltrating lymphocytes in colorectal cancer with microsatellite instability are activated and cytotoxic

2004 ◽  
Vol 91 (4) ◽  
pp. 469-475 ◽  
Author(s):  
S. M. Phillips ◽  
A. Banerjea ◽  
R. Feakins ◽  
S. R. Li ◽  
S. A. Bustin ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Microsatellite Instability ◽  
Tumour Infiltrating Lymphocytes ◽  
Infiltrating Lymphocytes

Prognostic value of tumour-infiltrating lymphocytes (TILs) in colorectal cancer

1997 ◽  
Vol 182 (3) ◽  
pp. 318-324 ◽  
Author(s):  
Kirsi M. Ropponen ◽  
Matti J. Eskelinen ◽  
Pertti K. Lipponen ◽  
Esko Alhava ◽  
Veli-Matti Kosma
Keyword(s):  
Colorectal Cancer ◽  
Prognostic Value ◽  
Tumour Infiltrating Lymphocytes ◽  
Infiltrating Lymphocytes

Characterization of tumour-infiltrating lymphocytes and apoptosis in colitis-associated neoplasia: comparison with sporadic colorectal cancer

2006 ◽  
Vol 208 (3) ◽  
pp. 381-387 ◽  
Author(s):  
JM Michael-Robinson ◽  
N Pandeya ◽  
MD Walsh ◽  
A-E Biemer-Huttmann ◽  
RD Eri ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Sporadic Colorectal Cancer ◽  
Tumour Infiltrating Lymphocytes ◽  
Infiltrating Lymphocytes

scholarly journals O66: FLOW CYTOMETRIC AND RNA SEQUENCED UNCOUPLING OF TUMOUR-INFILTRATING LYMPHOCYTE CHECKPOINT EXPRESSION AND MISMATCH REPAIR STATUS IN COLORECTAL CANCER

2021 ◽  
Vol 108 (Supplement_1) ◽  
Author(s):  
A Zaborowski ◽  
C Harmon ◽  
D Duquette ◽  
L Dyck ◽  
L Lynch ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Functional Status ◽  
Mismatch Repair ◽  
T Cell Response ◽  
Checkpoint Blockade ◽  
Colonic Tissue ◽  
Flow Cytometric ◽  
Tumour Infiltrating Lymphocytes ◽  
Mismatch Repair Status ◽  
Infiltrating Lymphocytes

Abstract Introduction Selection criteria for immunotherapy with checkpoint blockade in colorectal cancer are currently based on mismatch repair status. However, intra-tumoral T cell response varies among patients with the same MMR status. Inhibitory checkpoint expression on tumour-infiltrating lymphocytes in microsatellite stable and unstable CRC is unknown. Method Flow cytometric analysis and single-cell RNA sequencing, using the 10x genomic platform, were performed ex vivo on tumour and uninvolved colonic tissue samples from patients undergoing surgical resection for colorectal cancer. Inhibitory checkpoint expression (PD-1) and functional status of isolated populations of TILs were analysed. Result Conventional and unconventional tissue-resident T cells were enriched in tumour samples compared to uninvolved healthy colonic tissue. Upregulation of PD-1 expression on TILs was observed in all patients, however the % upregulation varied among those with the same MMR status. A proportion of MSS tumours were found to have high levels of PD-1 expression, while a subset of MSI tumours had low PD-1 expression. Functional studies of cytotoxicity demonstrated varying TIL production of IFNg, TNFa and amphiregulin in patients with the same MMR status. Conclusion TIL profile (infiltration pattern, checkpoint expression and functional status) differs among patients with the same MMR status. A subset of ‘hot’ immunogenic MSS tumours exist that may respond to checkpoint blockade. Characterisation of TIL profile represents a more accurate method of selecting patients likely to derive benefit. Abbrev. CRC Colorectal cancer, MMR Mismatch repair, TIL Tumour-infiltrating lymphocytes, MSS Microsatellite stable, MSI Microsatellite unstable, IFNg Interferon-gamma, TNFa Tumour necrosis factor alpha Take-home message A subset of immunogenic microsatellite stable colorectal tumours exist that may respond to checkpoint blockade. Mismatch repair status alone does not accurately predict response to immunotherapy.

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