Clinical Focus ›› 2023, Vol. 38 ›› Issue (11): 972-978.doi: 10.3969/j.issn.1004-583X.2023.11.002

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Correlation between the expression level of SPARC and prognosis in patients with non-small cell lung cancer: A meta-analysis

Zhang Na, Sun Yue, Dong Han, Zhao Peng, Yang Xin, Qi Yuan, Wang Lingling()   

  1. Department of Respiratory and Critical Care Medicine, the Fourth People's Hospital of Shenyang,Shenyang 110000,China
  • Received:2023-02-04 Online:2023-11-20 Published:2024-01-17
  • Contact: Wang Lingling E-mail:hongtao7@163.com

Abstract:

Objective Secreted protein acidic and rich in cysteine (SPARC), also known as osteonectin and basal membrane-40 (BM-40), is a small molecule glycoprotein related to cell secretion. It promotes the invasion and metastasis of a variety of malignant tumors, which is correlated with the poor prognosis of tumor patients. At present, the prognostic role of SPARC in non-small cell lung cancer (NSCLC) is still controversial. This meta-analysis aims to assess the expression level of SPARC in NSCLC patients and its correlation with the prognosis. Methods Articles reporting the expression level of SPARC in NSCLC patients with and its correlation with the prognosis were systematically searched in the PubMed, Web of Science, EMBASE, Cochrane Library, China National Knowledge Infrastructure (CNKI) and Wanfang databases. Data analysis was performed using Review Manager 5.4 software. Hazard ratio ( H R) and 95% Confidence interval ( C I) were calculated to assess the expression level of SPARC and its correlation with the overall survival (OS) of NSCLC patients. Results A total of 5 studies involving 430 NSCLC patients were recruited. Heterogeneity was tested ( I 2=31%, P=0.21), and the H R of the pooled data using a fixed effects model was 1.77(95% C I: 1.41-2.21), indicating that the high level of SPARC was correlated with a poor OS in NSCLC patients. A subgroup analysis based on the methylation of SPARC was conducted. There was no heterogeneity ( I 2=0%, P=0.89) in the articles without reporting the methylation of SPARC, with the combined H R of 1.97(95% C I: 1.40-2.79). A significant heterogeneity was detected in the articles reporting the methylation of SPARC ( I 2=80%, P=0.03), with the combined H R of 1.63(95% C I: 1.21-2.19), indicating that the prognostic significance of SPARC was changed by the presence or absence of methylation. Conclusion High level of SPARC predicts a poor prognosis in NSCLC patients, which can be used as a potential biomarker to assess the prognosis of NSCLC.

Key words: carcinoma, non-small-cell lung, SPARC, overall survival, prognosis, meta-analysis

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