ANSWER: C- DNAJB9
DNAJB9 immunohistochemical (IHC) stain is a quick and inexpensive tool used to confirm the diagnosis of Fibrillary GN. DNAJB9 IHC has a sensitivity of 98% and >99% specificity.
In 2017, Dr. Nasr et al. discovered a novel proteomic biomarker for Fibrillary GN called DnaJ homolog subfamily B member 9 (DNAJB9), which is a member of the chaperone gene family.
DNAJB9 IHC stain is a quick and inexpensive tool used to confirm the diagnosis of Fibrillary GN. DNAJB9 IHC has a sensitivity of 98% and >99% specificity.
Reference:
Nasr S, et al. DNAJB9 is a specific immunohistochemical marker for fibrillary glomerulonephritis. Kidney Int Rep. 2018;3: 56-64.
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