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Comparative Study
Journal Article
Blood neutrophil-to-lymphocyte ratio predicts survival in patients with colorectal liver metastases treated with systemic chemotherapy.
Annals of Surgical Oncology 2009 March
BACKGROUND: Whether neutrophil-to-lymphocyte ratio (NLR) predicts survival of patients with colorectal liver metastases (CLM) treated with systemic chemotherapy remains unclear.
METHODS: Clinicopathologic data were reviewed for patients with CLM treated with chemotherapy and resection (n=200) or chemotherapy only (n=90). Univariate and multivariate analyses for prognostic factors were performed. In the resection group, whether chemotherapy normalizes high NLR and the effect of NLR normalization on survival were evaluated.
RESULTS: In the resection group, patients with preoperative NLR>5 had a worse 5-year survival rate than patients with NLR 5 was the only independent preoperative predictor of worse survival (P=0.016; hazard ratio [HR]=2.22; 95% confidence interval [95% CI], 1.16-4.25). In the nonresection group, patients with prechemotherapy NLR>5 had a worse 3-year survival rate than patients with NLR 5 was the only independent predictor of worse survival (P=0.001; HR = 2.91; 95% CI, 1.54-5.50). In the resection group, chemotherapy normalized high NLR in 17 of 25 patients, and these 17 patients had better survival than the 8 patients with high NLR both before chemotherapy and before surgery (P=0.021).
CONCLUSION: NLR independently predicts survival in patients with CLM treated with chemotherapy followed by resection or chemotherapy only. When chemotherapy normalizes high NLR, improved survival is expected.
METHODS: Clinicopathologic data were reviewed for patients with CLM treated with chemotherapy and resection (n=200) or chemotherapy only (n=90). Univariate and multivariate analyses for prognostic factors were performed. In the resection group, whether chemotherapy normalizes high NLR and the effect of NLR normalization on survival were evaluated.
RESULTS: In the resection group, patients with preoperative NLR>5 had a worse 5-year survival rate than patients with NLR 5 was the only independent preoperative predictor of worse survival (P=0.016; hazard ratio [HR]=2.22; 95% confidence interval [95% CI], 1.16-4.25). In the nonresection group, patients with prechemotherapy NLR>5 had a worse 3-year survival rate than patients with NLR 5 was the only independent predictor of worse survival (P=0.001; HR = 2.91; 95% CI, 1.54-5.50). In the resection group, chemotherapy normalized high NLR in 17 of 25 patients, and these 17 patients had better survival than the 8 patients with high NLR both before chemotherapy and before surgery (P=0.021).
CONCLUSION: NLR independently predicts survival in patients with CLM treated with chemotherapy followed by resection or chemotherapy only. When chemotherapy normalizes high NLR, improved survival is expected.
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