4.3 Article

Elevated circulating PCSK9 level is associated with 28-day mortality in patients with sepsis: a prospective cohort study

Journal

BMC EMERGENCY MEDICINE
Volume 23, Issue 1, Pages -

Publisher

BMC
DOI: 10.1186/s12873-023-00896-6

Keywords

PCSK9; Mortality; Sepsis

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This study found that in patients with sepsis, the 28-day mortality rate significantly increased when the baseline circulating PCSK9 level exceeded 370 ng/ml, indicating that circulating PCSK9 levels may be a potential biomarker for predicting the prognosis of sepsis.
Objectives Pro-protein convertase subtilisin/kexin 9 (PCSK9) decreases the clearance of the pathogenic lipids, supporting the potential role of PCSK9 in the prognosis of sepsis.Methods In this prospective cohort study, patients with sepsis were consecutively recruited from 1 to 2020 to 30 September 2021 at the First People's Hospital of Huaihua, China. All the eligible patients were categorized into low-PCSK9 and high-PCSK9 groups, based on their PCSK9 levels at admission. Time-dependent receiver operating characteristic curves and Cox proportional hazards regression were used to evaluate the association between PCSK9 level and 28-day mortality of sepsis.Results Of the 203 enrolled patients, 56 (27.59%) died during the 28-day follow-up. The PCSK9 level was positively related to the C-reactive protein level. The cut-off point of PCSK9 levels for 28-day mortality risk was 370 ng/ml. Through comparison between high-PCSK9 (> 370 ng/ml) with low-PCSK9 (<= 370 ng/ml) groups, the adjusted HR for mortality was 2.56 (95% CI: 1.25-5.23, p = 0.01).Conclusions The 28-day mortality of sepsis increased significantly as the baseline circulating PCSK9 level exceeded 370 ng/ml, indicating circulating PCSK9 levels may be a potential biomarker to predict the prognosis of sepsis.

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