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Prognostic Value of Pretreatment Procalcitonin and Neutrophil-lymphocyte Ratio in Extensive-stage Small-cell Lung Cancer

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Specialties Oncology
Pharmacology
Date 2024 Mar 27
PMID 38536706
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Abstract

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.

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