Case highlights the role of mass spectrometry and DNAJB9 immunostaining in rare glomerular disease diagnosis, suggesting the complexity of fibrogenesis in lupus nephritis.
Rare cases of LN show fibrogenesis similar to that of FGN. It remains uncertain whether fibril formation in such cases represents a unique manifestation of LN or LN with superimposed FGN. This case highlights the importance of mass spectrometry and DNAJB9 immunostaining in confirming rare glomerular disease patterns.
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Lin et al. (2026) studied this question.
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