Serum Proteomic Analysis Identifies SAA1, FGA, SAP, and CETP as New Biomarkers for Eosinophilic Granulomatosis With Polyangiitis

Xiao，Jing1; Lu，Shaohua1; Wang，Xufei1; Liang，Mengdi1; Dong，Cong2; Zhang，Xiaoxian2; Qiu，Minzhi3; Ou，Changxing2; Zeng，Xiaoyin1; Lan，Yanting1; Hu，Longbo1; Tan，Long1; Peng，Tao1,4; Zhang，Qingling2; Long，Fei1

2022-06-10

10.3389/fimmu.2022.866035

Frontiers in Immunology   Impact Factor & Quartile

1664-3224

Background: Eosinophilic granulomatosis with polyangiitis (EGPA) is characterized by asthma-like attacks in its early stage, which is easily misdiagnosed as severe asthma. Therefore, new biomarkers for the early diagnosis of EGPA are needed, especially for differentiating the diagnosis of asthma. Objectives: To identify serum biomarkers that can be used for early diagnosis of EGPA and to distinguish EGPA from severe asthma. Method: Data-independent acquisition (DIA) analysis was performed to identify 45 healthy controls (HC), severe asthma (S-A), and EGPA patients in a cohort to screen biomarkers for early diagnosis of EGPA and to differentiate asthma diagnosis. Subsequently, parallel reaction monitoring (PRM) analysis was applied to a validation cohort of 71 HC, S-A, and EGPA patients. Result: Four candidate biomarkers were identified from DIA and PRM analysis—i.e., serum amyloid A1 (SAA1), fibrinogen-α (FGA), and serum amyloid P component (SAP)—and were upregulated in the EGPA group, while cholesteryl ester transfer protein (CETP) was downregulated in the EGPA group compared with the S-A group. Receiver operating characteristics analysis shows that, as biomarkers for early diagnosis of EGPA, the combination of SAA1, FGA, and SAP has an area under the curve (AUC) of 0.947, a sensitivity of 82.35%, and a specificity of 100%. The combination of SAA1, FGA, SAP, and CETP as biomarkers for differential diagnosis of asthma had an AUC of 0.921, a sensitivity of 78.13%, and a specificity of 100%, which were all larger than single markers. Moreover, SAA1, FGA, and SAP were positively and CETP was negatively correlated with eosinophil count. Conclusion: DIA-PRM combined analysis screened and validated four previously unexplored but potentially useful biomarkers for early diagnosis of EGPA and differential diagnosis of asthma.

biomarkers data-independent acquisition eosinophilic granulomatosis with polyangiitis parallel reaction monitoring severe asthma

SCI

English

Others

WOS:000815674100001

2-s2.0-85133101456

Scopus

1.Sino-French Hoffmann Institute,State Key Laboratory of Respiratory Disease,School of Basic Medical Sciences,Guangzhou Medical University,Guangzhou,China
2.Pulmonary and Critical Care Medicine,Guangzhou Institute of Respiratory Health,National Clinical Research Center for Respiratory Disease,National Center for Respiratory Medicine,State Key Laboratory of Respiratory Diseases,The First Affiliated Hospital of Guangzhou Medical University,Guangzhou,China
3.Health Management Center,Shenzhen People’s Hospital,The Second Clinical Medical College,Jinan University,First Affiliated Hospital,Southern University of Science and Technology),Shenzhen,China
4.Guangdong South China Vaccine Co.,Ltd,Guangzhou,China

Xiao，Jing,Lu，Shaohua,Wang，Xufei,et al. Serum Proteomic Analysis Identifies SAA1, FGA, SAP, and CETP as New Biomarkers for Eosinophilic Granulomatosis With Polyangiitis[J]. Frontiers in Immunology,2022,13.

Xiao，Jing.,Lu，Shaohua.,Wang，Xufei.,Liang，Mengdi.,Dong，Cong.,...&Long，Fei.(2022).Serum Proteomic Analysis Identifies SAA1, FGA, SAP, and CETP as New Biomarkers for Eosinophilic Granulomatosis With Polyangiitis.Frontiers in Immunology,13.

Xiao，Jing,et al."Serum Proteomic Analysis Identifies SAA1, FGA, SAP, and CETP as New Biomarkers for Eosinophilic Granulomatosis With Polyangiitis".Frontiers in Immunology 13(2022).