title: VH1-44 gene usage defines a subset of canine B-cell lymphomas associated with better patient survival.
abstract: The use of specific immunoglobulin heavy chain variable region (VH) genes has been associated with increased patient survival in human B-cell lymphomas (hBCL). Given the similarity of human and canine BCL (cBCL) in morphology and clinical treatment, we examined the choice of VH in cBCL and determined whether VH gene selection was a distinct feature associated with survival time in dogs. VH gene selection and mutational status in 52 cBCL, including 29 diffuse large B-cell lymphomas (cDLBCL, the most common subtype of cBCL), were analyzed by comparison with the 80 published canine germline VH gene sequences. We further examined the prognostic impact of the subgroups defined by these features on canine survival. We found that VH1-44 was preferentially expressed in the majority of the 52 cBCLs (60%) as well as in the majority of the cDLBCL subset (59%). VH1-44 gene expression was associated with a statistically better overall survival (p=0.039) in cBCL patients, as well as in the cDLBCL subset of patients (p=0.038). These findings suggest that VH gene selection in cBCL is not random and may therefore have functional implications for cBCL lymphomagenesis, in addition to being a useful prognostic biomarker.
authors: Center for Comparative Medicine and Translational Research, North Carolina State University, Raleigh, NC, United States; Lineberger Comprehensive Cancer Center, Chapel Hill, NC, United States; Division of Hematology/Oncology, University of North Carolina at Chapel Hill, NC, United States.
authors: Hsiao-Wei
authors: HW
authors: Chen
authors: Lineberger Comprehensive Cancer Center, Chapel Hill, NC, United States; Division of Hematology/Oncology, University of North Carolina at Chapel Hill, NC, United States.
authors: George W
authors: GW
authors: Small
authors: Center for Comparative Medicine and Translational Research, North Carolina State University, Raleigh, NC, United States; Bioinformatics Research Center, Department of Statistics, North Carolina State University, Raleigh, NC, United States.
authors: Alison
authors: A
authors: Motsinger-Reif
authors: Center for Comparative Medicine and Translational Research, North Carolina State University, Raleigh, NC, United States; Lineberger Comprehensive Cancer Center, Chapel Hill, NC, United States; Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States. Electronic address: steven_suter@ncsu.edu.
authors: Steven E
authors: SE
authors: Suter
authors: Center for Comparative Medicine and Translational Research, North Carolina State University, Raleigh, NC, United States; Lineberger Comprehensive Cancer Center, Chapel Hill, NC, United States; Division of Hematology/Oncology, University of North Carolina at Chapel Hill, NC, United States. Electronic address: kristy_richards@med.unc.edu.
authors: Kristy L
authors: KL
authors: Richards
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000235:genetics / Q000276:immunology* / Q000401:mortality; D004285:Dogs / Q000276:immunology*; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics*; D007135:Immunoglobulin Variable Region / Q000235:genetics*; D016393:Lymphoma, B-Cell / Q000235:genetics / Q000276:immunology / Q000401:mortality / Q000662:veterinary*
chemical_list: D007143:Immunoglobulin Heavy Chains; D007135:Immunoglobulin Variable Region
keywords: B-cell lymphoma; Diffuse large B-cell lymphoma; Immunoglobulin heavy chain variable region (VH); Survival; VH1-44