Prognostic Value of Pretreatment Procalcitonin and Neutrophil-lymphocyte Ratio in Extensive-stage Small-cell Lung Cancer
Overview
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Background: To investigate the influence of pretreatment neutrophil-to-lymphocyte ratio (NLR) and procalcitonin (PCT) on progression-free survival (PFS) in extensive-stage small-cell lung cancer (SCLC) patients.
Method: A total of 100 extensive-stage SCLC patients were enrolled in our study. Patients were stratified according to the median values of pretreatment NLR and PCT levels: low NLR group (NLR ≤3.17), high NLR group (NLR>3.17), low PCT group (PCT ≤0.06; ng/ml), high PCT group (PCT>0.06; ng/ml). The Kaplan-Meier method and multivariable Cox regression model were used to reveal the prognostic effects of pretreatment NLR and PCT on PFS.
Results: The median PFS of the total extensive-stage SCLC patients was 6.0 months. The median PFS of low pretreatment NLR group (NLR ≤3.17) was not significantly different from that of high pretreatment NLR group (6.2 months vs 5.8 months; = .675). Patients with low pretreatment PCT (PCT ≤0.06; ng/ml) had significantly better PFS than patients with high pretreatment PCT (PCT>0.06; ng/ml) (6.9 months vs 5.7 months; = .043). With the multivariable Cox regression analysis, the response to first-line chemotherapy ( ≤ .001) and pretreatment PCT (HR = 0.516; 95%CI 0.326-0.817; = .005) were identified as independent factors associated with PFS.
Conclusion: Pretreatment PCT is an independent factor associated with PFS in extensive-stage SCLC patients treated with first-line chemotherapy, but pretreatment NLR reflects no significant prognostic value in our study.
Shuang Z, Xingyu X, Yue C, Mingjing Y Clin Respir J. 2024; 18(12):e70044.
PMID: 39696772 PMC: 11655385. DOI: 10.1111/crj.70044.
Zhou Q, Lu X, Qian L, Yu C, Xie J, Kong D Medicine (Baltimore). 2024; 103(49):e40792.
PMID: 39654236 PMC: 11631015. DOI: 10.1097/MD.0000000000040792.