Jennifer S Hanberg1,2, Matthew S Freiberg3, Matthew B Goetz4,5, Maria C Rodriguez-Barradas6,7, Cynthia Gibert8, Kris Ann Oursler9,10, Amy C Justice1,2, Janet P Tate1,2. 1. Department of Medicine, Yale University School of Medicine, New Haven, Connecticut. 2. VA Connecticut Healthcare System, West Haven. 3. Department of Medicine and Epidemiology, Vanderbilt University School of Medicine, Nashville, Tennessee. 4. Division of Infectious Diseases, University of California, David Geffen School of Medicine, Los Angeles. 5. Greater Los Angeles VA Healthcare Center, California. 6. Department of Medicine and Infectious Disease, Baylor College of Medicine, Houston, Texas. 7. Michael E. DeBakey VA Medical Center, Houston, Texas. 8. Division of Infectious Diseases and Medicine, George Washington University, School of Medicine and Health Sciences, Washington, District of Columbia. 9. Department of Medicine, Virginia Tech Carilion School of Medicine, Salem. 10. University of Maryland School of Medicine, Baltimore.
Abstract
BACKGROUND: Inflammation in human immunodeficiency virus (HIV)-infected patients is associated with poorer health outcomes. Whether inflammation as measured by the neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) adds information to existing prognostic indices is not known. METHODS: We analyzed data from 2000 to 2012 in the Veterans Aging Cohort Study (VACS), overall and stratified by HIV/hepatitis C virus status (n = 89 786). We randomly selected a visit date at which all laboratory values of interest were available within 180 days; participants with HIV received at least 1 year of antiretroviral therapy. We followed patients for (1) mortality and (2) hepatic decompensation (HD) and analyzed associations using Cox regression, adjusted for a validated mortality risk index (VACS Index 2.0). In VACS Biomarker Cohort, we considered correlation with biomarkers of inflammation: interleukin-6, D-dimer, and soluble CD-14. RESULTS: Neutrophil-to-lymphocyte ratio and PLR demonstrated strong unadjusted associations with mortality (P < .0001) and HD (P < .0001) and were weakly correlated with other inflammatory biomarkers. Although NLR remained statistically independent for mortality, as did PLR for HD, the addition of NLR and PLR to the VACS Index 2.0 did not result in significant improvement in discrimination compared with VACS Index 2.0 alone for mortality (C-statistic 0.767 vs 0.758) or for HD (C-statistic 0.805 vs 0.801). CONCLUSIONS: Neutrophil-to-lymphocyte ratio and PLR were strongly associated with mortality and HD and weakly correlated with inflammatory biomarkers. However, most of their association was explained by VACS Index 2.0. Addition of NLR and PLR to VACS 2.0 did not substantially improve discrimination for either outcome. Published by Oxford University Press on behalf of Infectious Diseases Society of America 2019.
BACKGROUND: Inflammation in human immunodeficiency virus (HIV)-infected patients is associated with poorer health outcomes. Whether inflammation as measured by the neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) adds information to existing prognostic indices is not known. METHODS: We analyzed data from 2000 to 2012 in the Veterans Aging Cohort Study (VACS), overall and stratified by HIV/hepatitis C virus status (n = 89 786). We randomly selected a visit date at which all laboratory values of interest were available within 180 days; participants with HIV received at least 1 year of antiretroviral therapy. We followed patients for (1) mortality and (2) hepatic decompensation (HD) and analyzed associations using Cox regression, adjusted for a validated mortality risk index (VACS Index 2.0). In VACS Biomarker Cohort, we considered correlation with biomarkers of inflammation: interleukin-6, D-dimer, and soluble CD-14. RESULTS: Neutrophil-to-lymphocyte ratio and PLR demonstrated strong unadjusted associations with mortality (P < .0001) and HD (P < .0001) and were weakly correlated with other inflammatory biomarkers. Although NLR remained statistically independent for mortality, as did PLR for HD, the addition of NLR and PLR to the VACS Index 2.0 did not result in significant improvement in discrimination compared with VACS Index 2.0 alone for mortality (C-statistic 0.767 vs 0.758) or for HD (C-statistic 0.805 vs 0.801). CONCLUSIONS: Neutrophil-to-lymphocyte ratio and PLR were strongly associated with mortality and HD and weakly correlated with inflammatory biomarkers. However, most of their association was explained by VACS Index 2.0. Addition of NLR and PLR to VACS 2.0 did not substantially improve discrimination for either outcome. Published by Oxford University Press on behalf of Infectious Diseases Society of America 2019.
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