Lupus & antiphospholipid syndrome

Association of neutrophil-to-lymphocyte ratio with disease activity in systemic lupus erythematosus: A meta-analysis

LupusPublished Systematic review and meta-analysis

Pooled result · NLR, SLE vs healthy controlsResult — go to the resultSMD 1.051 95% CI 0.817–1.286

Authors' conclusion

This meta-analysis demonstrates that NLR is significantly increased in SLE patients compared to healthy controls, and that NLR is associated with greater disease activity, supported by its positive correlation with SLEDAI.

Study context

Population
Studies comparing neutrophil-to-lymphocyte ratio (NLR) in systemic lupus erythematosus (SLE) patients and healthy controls; MEDLINE, Embase and Web of Science from inception through August 2025Thirty-one studies
Participants
4,006 vs 2,576
Comparison
NLR in SLE vs healthy controls; active vs inactive SLE; active lupus nephritis (LN) vs non-LN; correlation of NLR with SLE Disease Activity Index (SLEDAI)
  • SLEn = 4,006
  • Healthy controlsn = 2,576reference
Outcome
NLR in SLE patients vs healthy controls
Methodological detailsstratified by ethnicity, sample size and publication year
  • Stratified by ethnicity, sample size and publication year

Pooled result

NLR, SLE vs healthy controls

SMD

1.051

95% CI 0.817–1.286

P < 0.001

SLEvs Healthy controls
SMD 1.051 (95% CI 0.817–1.286); P < 0.001

As reported in the abstract

Further pooled results

OutcomeSMD (95% CI)P value
NLR, SLE vs healthy controls by ethnicity (subgroups)SLE (European)vs Healthy controls1.058 (0.402–1.713)P = 0.002
NLR, SLE vs healthy controls by ethnicity (subgroups)SLE (Asian)vs Healthy controls1.058 (0.839–1.278)P < 0.001
NLR, SLE vs healthy controls by ethnicity (subgroups)SLE (Arab)vs Healthy controls1.127 (0.707–1.547)P < 0.001
NLR, activevs inactive SLE1.134 (0.252–2.017)P = 0.012
NLR, active LNvs non-LN0.467 (−0.045-0.979)P = 0.074

Correlation of NLR with SLEDAI

Pooled correlation coefficient
0.354 (95% CI 0.256-0.444, p < 0.001)
Asian subgroup correlation coefficient
0.358 (95% CI 0.246-0.461, p < 0.001)
Arab subgroup correlation coefficient
0.525 (95% CI 0.382-0.644, p < 0.001)

Original publication

Association of neutrophil-to-lymphocyte ratio with disease activity in systemic lupus erythematosus: A meta-analysis. Lupus. Published 23 August 2026. doi:10.1177/09612033261481122

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