February 4, 2021
Twitter Poll (February 3, 2021)
- Published: February 4, 2021
- By: Joel Murphy, MD
Answer: C) SAP
Serum amyloid protein P (SAP) has been found to be a highly sensitive and specific marker for the diagnosis of Membranous-Like Glomerulopathy with Masked IgG Kappa Deposits. Of note, while these cases show light chain restriction by immunofluorescence, most patients do not have evidence of an underlying paraprotein. For further information about this interesting entity, please see the following references.
Larsen CP, Sharma SG, Caza TN, et al. Serum amyloid P deposition is a sensitive and specific feature of membranous-like glomerulopathy with masked IgG kappa deposits. Kidney Int 2020 Mar;97(3): 602-608.
Larsen CP, et al. Membranous-like glomerulopathy with masked IgG kappa deposits. Kidney Int 2014; 86(1): 154-161. PMID: 24429395
Larsen CP, et al. Clinicopathologic Features of membranous-like glomerulopathy with masked IgG kappa deposits. Kidney Int Reports 2016; 1(4): 299-305.