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Immunity to live: an immunopathoscore using the consensus Immunoscore to best define the risk of recurrence and death in stage IV metastatic patients

Authors
  • Baldin, Pamela1
  • Van den Eynde, Marc2
  • Mlecnik, Bernhard3, 4, 5, 6
  • Galon, Jérôme3, 4, 5
  • 1 Cliniques Universitaires Saint-Luc/Université Catholique de Louvain (Uclouvain), Belgium , (Belgium)
  • 2 Institut Roi Albert II, Université Catholique de Louvain (Uclouvain), Belgium , (Belgium)
  • 3 INSERM, France , (France)
  • 4 Equipe Labellisée Ligue Contre le Cancer, France , (France)
  • 5 Sorbonne Université, Université de Paris, France , (France)
  • 6 Inovarion, France , (France)
Type
Published Article
Journal
OncoImmunology
Publisher
Landes Bioscience
Publication Date
Oct 13, 2020
Volume
9
Issue
1
Identifiers
DOI: 10.1080/2162402X.2020.1826133
PMID: 33110705
PMCID: PMC7561331
Source
PubMed Central
Keywords
License
Green

Abstract

The consensus Immunoscore is a routine assay quantifying the adaptive immune response within the tumor microenvironment. Its evaluation in the primary tumor of patients with stages I/II/III colorectal cancer (CRC) has prognostic value that has been confirmed in multiple studies. For metastatic patients, the evaluation of the consensus Immunoscore within resected metastases also significantly predicts the recurrence and survival of Stage IV patients. Since recurrence rates post-surgery are still very high, it is important to best evaluate risk parameters using the main patho-molecular and immune parameters. After preoperative treatment and curative resection of 582 metastases from 221 patients, clinico-pathological parameters, RAS mutation, and Immunoscore within metastases were assessed. Immunoscore and clinico-pathological parameters (number of metastases, surgical margin, histopathological growth pattern, and steatohepatitis) were associated with relapse in multivariable analysis. A Pathological Score (PS) that combines relevant clinico-pathological factors for relapse and Immunoscore was significantly ( P < .0001) associated with Time to recurrence. In multivariable analysis, only Immunoscore ( P < .001) and RAS mutations ( P = .03) were prognostic and significantly associated with overall survival. Thus, among all parameters clinically relevant in the metastatic settings, PS and Immunoscore allow the stratification of stage IV CRC patients and identify patients with higher risk of recurrence. Immunoscore remained the major prognostic factor for overall survival (OS). In its latest edition, the WHO classification of Digestive System Tumors introduced for the first time the immune response as an essential and desirable diagnostic criterion for CRC. These novel results highlight the clinical utility of Immunoscore in Stage IV patients.

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