Deregulation of COMMD1 is associated with poor prognosis in diffuse large B-cell lymphoma

PLoS One. 2014 Mar 13;9(3):e91031. doi: 10.1371/journal.pone.0091031. eCollection 2014.

Abstract

Background: Despite improved survival for the patients with diffuse large B-cell lymphoma (DLBCL), the prognosis after relapse is poor. The aim was to identify molecular events that contribute to relapse and treatment resistance in DLBCL.

Methods: We analysed 51 prospectively collected pretreatment tumour samples from clinically high risk patients treated in a Nordic phase II study with dose-dense chemoimmunotherapy and central nervous system prophylaxis with high resolution array comparative genomic hybridization (aCGH) and gene expression microarrays. Major finding was validated at the protein level immunohistochemically in a trial specific tissue microarray series of 70, and in an independent validation series of 146 patients.

Results: We identified 31 genes whose expression changes were strongly associated with copy number aberrations. In addition, gains of chromosomes 2p15 and 18q12.2 were associated with unfavourable survival. The 2p15 aberration harboured COMMD1 gene, whose expression had a significant adverse prognostic impact on survival. Immunohistochemical analysis of COMMD1 expression in two series confirmed the association of COMMD1 expression with poor prognosis.

Conclusion: COMMD1 is a potential novel prognostic factor in DLBCLs. The results highlight the value of integrated comprehensive analysis to identify prognostic markers and genetic driver events not previously implicated in DLBCL.

Trial registration: ClinicalTrials.gov NCT01502982.

Publication types

  • Clinical Trial, Phase II
  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adaptor Proteins, Signal Transducing / genetics
  • Adaptor Proteins, Signal Transducing / metabolism*
  • Adult
  • Aged
  • Combined Modality Therapy
  • Comparative Genomic Hybridization
  • Female
  • Gene Expression Regulation, Neoplastic*
  • Genetic Predisposition to Disease
  • Humans
  • Immunohistochemistry
  • Immunotherapy
  • Lymphoma, Large B-Cell, Diffuse / diagnosis
  • Lymphoma, Large B-Cell, Diffuse / drug therapy
  • Lymphoma, Large B-Cell, Diffuse / genetics*
  • Lymphoma, Large B-Cell, Diffuse / metabolism*
  • Male
  • Middle Aged
  • Oligonucleotide Array Sequence Analysis
  • Prognosis
  • Prospective Studies
  • Treatment Outcome
  • Young Adult

Substances

  • Adaptor Proteins, Signal Transducing
  • COMMD1 protein, human

Associated data

  • ClinicalTrials.gov/NCT01502982

Grants and funding

This work was supported by the grants from the Finnish Academy of Sciences (SH, SL, MT), Finnish Cancer Societies (SH, SL, MT), Sigrid Jusélius Foundation (SH, SL), University of Helsinki (SL), Helsinki Biomedical Graduate Program (RL), Helsinki University Central Hospital (SL), Amgen (SL, HH) and Roche Norway (HH). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.