Abstract
The diagnostic performance of M-type phospholipase A2 receptor (PLA2R) autoantibodies and PLA2R glomerular staining in discriminating between idiopathic membranous nephropathy (iMN) and secondary membranous nephropathy (sMN) has not been fully evaluated. We conducted an updated meta-analysis to investigate the accuracy and clinical value of serological anti-PLA2R test and histological PLA2R staining for differentiation iMN from sMN. A total of 19 studies involving 1160 patients were included in this meta-analysis. The overall sensitivity, specificity, diagnostic odds ratio (DOR) and area under the receiver operating characteristic curve (AUROC) of serum anti-PLA2R were 0.68 (95% CI, 0.61-074), 0.97 (95% CI, 0.85-1.00), 73.75 (95% CI, 12.56-432.96) and 0.82 (95% CI, 0.78-0.85), respectively, with substantial heterogeneity (I(2) = 86.42%). Subgroup analyses revealed the study design, publication type, study origin, assay method might account for the heterogeneity. Additionally, the overall sensitivity, specificity, DOR and AUROC of glomerular PLA2R staining were 0.78 (95% CI, 0.72-0.83), 0.91 (95% CI, 0.75-0.97), 34.70 (95% CI, 9.93-121.30) and 0.84 (95% CI, 0.81-0.87), respectively, without heterogeneity (I(2) = 0%). Serological...Continue Reading
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