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Disease Profile

Immunotactoid or fibrillary glomerulopathy

Prevalence estimates on Rare Medical Network websites are calculated based on data available from numerous sources, including US and European government statistics, the NIH, Orphanet, and published epidemiologic studies. Rare disease population data is recognized to be highly variable, and based on a wide variety of source data and methodologies, so the prevalence data on this site should be assumed to be estimated and cannot be considered to be absolutely correct.

<1 / 1 000 000

US Estimated

Europe Estimated

Age of onset






Autosomal dominant A pathogenic variant in only one gene copy in each cell is sufficient to cause an autosomal dominant disease.


Autosomal recessive Pathogenic variants in both copies of each gene of the chromosome are needed to cause an autosomal recessive disease and observe the mutant phenotype.


dominant X-linked dominant inheritance, sometimes referred to as X-linked dominance, is a mode of genetic inheritance by which a dominant gene is carried on the X chromosome.


recessive Pathogenic variants in both copies of a gene on the X chromosome cause an X-linked recessive disorder.


Mitochondrial or multigenic Mitochondrial genetic disorders can be caused by changes (mutations) in either the mitochondrial DNA or nuclear DNA that lead to dysfunction of the mitochondria and inadequate production of energy.


Multigenic or multifactor Inheritance involving many factors, of which at least one is genetic but none is of overwhelming importance, as in the causation of a disease by multiple genetic and environmental factors.


Not applicable


Other names (AKA)

Immunotactoid or fibrillary glomerulonephritis; Immunotactoid or fibrillary glomerulopathy; Fibrillary glomerulonephritis and immunotactoid glomerulopathy


Immunotactoid or fibrillary glomerulopathy is a term that includes two conditions: immunotactoid glomerulopathy and fibrillary glomerulonephritis, which are uncommon causes of glomerular disease. Most experts feel that fibrillary glomerulonephritis and immunotactoid glomerulopathy are separate disorders but they have many similarities and some experts group these disorders together. Fibrillary glomerulonephritis and immunotactoid glomerulopathy can be distinguished from each other by electron microscopy; the 'fibrils' that characterize fibrillary glomerulonephritis are smaller and randomly oriented as opposed to the larger and organized fibrils of immunotactoid glomerulopathy which also have microtubule formations. Both disorders probably result from deposits derived from immunoglobulins but in most cases the cause is idiopathic (unknown). The signs and symptoms are similar in both diseases and may include blood (hematuria) and protein (proteinuria) in the urine, kidney insufficiency and high blood pressure. Fibrillary glomeurlonephritis is much more common than immunotactoid glomerulopathy. Both fibrillary glomerulonephritis and immunotactoid glomerulopathy have been associated with hepatitis C virus infection and with malignancy and autoimmune disease, but immunotactoid glomerulopathy patients have a greater predisposition to chronic lymphocytic leukemia and B cell lymphomas. All patients should be screened for these conditions. It is also important to rule out another disease known as amyloidosis. When the fibrils are stained with an acid dye known as "Congo red" the results are negative. In amyloidosis the results are positive because the dye is absorbed by the amyloids. Treatment is generally determined by the severity of the kidney problems.[1][2]

Learn more

These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

In-Depth Information

  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.


  1. Fervenza F, Sethi S, Appel G. Glomerular diseases due to nonamyloid fibrillar deposits. UpToDate. July 16, 2014; https://www.uptodate.com/contents/glomerular-diseases-due-to-nonamyloid-fibrillar-deposits. Accessed 8/19/2015.
  2. Alpers CE & Kowalewska J. Fibrillary Glomerulonephritis and Immunotactoid Glomerulopathy. Journal of the American Society of Nephrology (JASN). January, 2008; 19(1):34-37. https://jasn.asnjournals.org/content/19/1/34.full. Accessed 8/18/2015.