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• W2522729345 abstract "// Alessandra Romano 1 , Nunziatina Laura Parrinello 1 , Calogero Vetro 1 , Daniele Tibullo 1 , Cesarina Giallongo 1 , Piera La Cava 1 , Annalisa Chiarenza 1 , Giovanna Motta 1 , Anastasia L. Caruso 1 , Loredana Villari 2 , Claudio Tripodo 3 , Sebastiano Cosentino 4 , Massimo Ippolito 4 , Ugo Consoli 5 , Andrea Gallamini 6 , Stefano Pileri 7 , Francesco Di Raimondo 1 1 Division of Hematology, AOU “Policlinico - Vittorio Emanuele”, University of Catania, Catania, Italy 2 Division of Pathology, AOU “Policlinico - Vittorio Emanuele”, Catania, Italy 3 Tumor Immunology Unit, Department of Health Science, University of Palermo, Palermo, Italy 4 Nuclear Medicine Center, Azienda Ospedaliera Cannizzaro, Catania, Italy 5 Division of Hematology, ARNAS Garibaldi, Catania, Italy 6 Research, Innovation and Statistics Department. A. Lacassagne Cancer Centre, Nice, France 7 Unita di Diagnosi Emolinfopatologica, IEO, Milano, Italy Correspondence to: Alessandra Romano, email: sandrina.romano@gmail.com Francesco Di Raimondo, email: diraimon@unict.it Keywords: Arginase-1, Hodgkin lymphoma, PET-2 Received: June 30, 2016      Accepted: September 05, 2016      Published: September 14, 2016 ABSTRACT Purpose: Neutrophilia is hallmark of classic Hodgkin Lymphoma (cHL), but its precise characterization remains elusive. We aimed at investigating the immunosuppressive role of high-density neutrophils in HL. Experimental design: First, N-HL function was evaluated in vitro , showing increased arginase (Arg-1) expression and activity compared to healthy subjects. Second, we measured serum level of Arg-1 (s-Arg-1) by ELISA in two independent, training ( N = 40) and validation ( N = 78) sets. Results: s-Arg-1 was higher in patients with advanced stage ( p = 0.045), B-symptoms ( p = 0.0048) and a positive FDG-PET scan after two cycles of chemotherapy (PET-2, p = 0.012). Baseline levels of s-Arg-1 > 200 ng/mL resulted in 92% sensitivity and 56% specificity to predict a positive PET-2. Patients showing s-Arg-1 levels > 200 ng/mL had a shorter progression free survival (PFS). In multivariate analysis, PET-2 and s-Arg-1 at diagnosis were the only statistically significant prognostic variables related to PFS (respectively p = 0.0004 and p = 0.012). Moving from PET-2 status and s-Arg-1 level we constructed a prognostic score to predict long-term treatment outcome: low s-Arg-1 and negative PET-2 scan (score 0, N = 63), with a 3-Y PFS of 89.5%; either positive PET-2 or high s-Arg-1 (score 1, N = 46) with 3-Y PFS of 67.6%, and both positive markers (score 2, N = 9) with a 3-Y PFS of 37% ( p = 0.0004). Conclusions: We conclude that N-HL are immunosuppressive through increased Arg-1 expression, a novel potential biomarker for HL prognosis." @default.
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• W2522729345 date "2016-09-01" @default.
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• W2522729345 title "The Prognostic Value of the Myeloid-Mediated Immunosuppression Marker Arginase-1 in Classic Hodgkin Lymphoma" @default.
• W2522729345 doi "https://doi.org/10.1016/j.clml.2016.07.096" @default.
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