title: New biomarkers in T-cell lymphomas.
abstract: Peripheral T-cell lymphomas (PTCLs) are heterogeneous and uncommon malignancies characterized by an aggressive clinical course and a mostly poor outcome with current treatment strategies. The recent genome-wide molecular characterization of several entities has provided novel insights into their pathobiology and led to the identification of new biomarkers with diagnostic, prognostic or therapeutic implications for PTCL patients. Cell lineage and differentiation antigens (markers of γδ or NK lineage, of cytotoxicity, of follicular helper T cells) reflect the tumour's biological behaviour, and their detection in tissue samples may refine the diagnostic and prognostic stratification of the patients. Previously unrecognized gene rearrangements are being discovered (ITK-SYK translocation, IRF4/MUM1 and DUSP22 rearrangements), and may serve as diagnostic genetic markers. Deregulated molecules within oncogenic pathways (NF-κB, Syk, PDGFRα) and immunoreactive cell-surface antigens (CD30, CD52) have been brought to the fore as potential targets for guiding the development of novel therapies.
authors.affiliation: Department of Pathology, Centre Hospitalier Universitaire Sart Tilman, Liège, Belgium. bettina.bisig@ulg.ac.be
authors.forename: Bettina
authors.initials: B
authors.lastname: Bisig
authors.forename: Philippe
authors.initials: P
authors.lastname: Gaulard
authors.forename: Laurence
authors.initials: L
authors.lastname: de Leval
mesh_terms: D015703:Antigens, CD / Q000235:genetics / Q000378:metabolism; D014408:Biomarkers, Tumor / Q000235:genetics* / Q000378:metabolism; D019070:Cell Lineage; D015972:Gene Expression Regulation, Neoplastic; D015321:Gene Rearrangement; D006801:Humans; D007694:Killer Cells, Natural / Q000378:metabolism / Q000473:pathology; D016411:Lymphoma, T-Cell, Peripheral / Q000145:classification / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000235:genetics / Q000378:metabolism; D055607:Receptors, Natural Killer Cell / Q000235:genetics / Q000378:metabolism; D015398:Signal Transduction; D006377:T-Lymphocytes, Helper-Inducer / Q000378:metabolism / Q000473:pathology
chemical_list: D015703:Antigens, CD; D014408:Biomarkers, Tumor; D016692:Receptors, Antigen, T-Cell, gamma-delta; D055607:Receptors, Natural Killer Cell