The association of neutrophil-to-lymphocyte ratio with all-cause mortality in Chinese patients with MPO-ANCA associated vasculitis

Li Huang, Chanjuan Shen, Yong Zhong, Joshua D. Ooi, Ya Ou Zhou, Jin Biao Chen, Ting Wu, Ting Meng, Zhou Xiao, Wei Lin, Xiang Ao, Rong Tang, Xiangcheng Xiao, Qiaoling Zhou, Ping Xiao

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2 Citations (Scopus)

Abstract

Neutrophil-to-lymphocyte ratio (NLR) has been recently reported to be a promising inflammatory marker to assess systemic inflammation in many disorders. However, there are only a few studies looking at NLR in patients with myeloperoxidase (MPO)-anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). This study was thus undertaken to explore the relationship between NLR at diagnosis with inflammatory response and disease activity among MPO-AAV patients in a single Chinese center. Furthermore, we evaluated whether NLR could predict the renal prognosis and patient outcome. 188 patients with MPO-AAV were included in this study. Baseline NLR was positively correlated with CRP (r = 0.404, P < 0.001) and negatively with serum levels of C3 (r = − 0.163, P = 0.035), but it had no obvious correlation with Birmingham Vasculitis Activity Score (BVAS). Patients with MPO-AAV having NLR ≥ 9.53 exhibited higher risk for all-cause mortality than those having NLR < 9.53 (P < 0.0001). However, no significant difference was found in the kidney survival between patients having NLR ≥ 9.53 and those NLR < 9.53 at diagnosis. In multivariate analysis, NLR was positively associated with all-cause mortality (P = 0.037, HR = 1.98, 95% CI 1.04–3.78). There was no association between NLR with ESRD observed using univariate analysis or multivariate analysis. This large retrospective study of MPO-AAV patients in a single Chinese center demonstrates that NLR positively correlates with CRP and negatively correlates with serum levels of C3 in Chinese patients with MPO-AAV. Importantly, higher NLR predicts increased mortality and is, therefore, a useful independent prognostic in MPO-AAV.

Original languageEnglish
Pages (from-to)401-408
Number of pages8
JournalClinical and Experimental Medicine
Volume20
Issue number3
DOIs
Publication statusPublished - 1 Aug 2020

Keywords

  • Anti-neutrophil cytoplasmic antibody-associated vasculitis
  • Mortality
  • Myeloperoxidase
  • Neutrophil-to-lymphocyte ratio

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