The diagnosis of membranous glomerulopathy has been transformed in the past 10 years with the discovery of PLA2R. PLA2R is the most common target antigen in cases of primary membranous glomerulopathy. Immunohistochemical staining for PLA2R (shown here) can detect the PLA2R type of membranous with high sensitivity and specificity. Recent studies have shown that serum testing for PLA2R antibodies can serve as a useful biomarker for monitoring the clinical activity of this disease.
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