Which are the causes of TNF Receptor Associated Periodic Syndrome?

TNF Receptor Associated Periodic Syndrome (TRAPS) is an autoinflammatory condition caused by autosomal dominant mutations in the TNFRSF1A gene, which leads to persistent activation of the body's inflammatory response. Unlike autoimmune diseases where the body attacks itself, TNF Receptor Associated Periodic Syndrome is a genetic "glitch" in the signaling pathway that regulates inflammation, causing recurrent fevers and systemic pain.

What genetic factors cause TNF Receptor Associated Periodic Syndrome?

TNF Receptor Associated Periodic Syndrome is caused by a mutation in the TNFRSF1A gene on chromosome 12. This gene provides instructions for creating the TNF receptor, a protein that sits on cell surfaces to help manage inflammation. When this receptor is mutated, it fails to "turn off" properly, causing the body to remain in a state of high alert even without an infection to fight. Because it is inherited in an autosomal dominant pattern, a person only needs one copy of the mutated gene from one parent to develop TNF Receptor Associated Periodic Syndrome.

Are there environmental triggers for TNF Receptor Associated Periodic Syndrome?

While the underlying cause of TNF Receptor Associated Periodic Syndrome is strictly genetic, the frequency and severity of flare-ups can be influenced by external factors. Patients often report that their symptoms are triggered or worsened by:

• Physical or emotional stress


• Minor trauma or injury


• Infections (viral or bacterial)


• Hormonal changes

Is the cause of TNF Receptor Associated Periodic Syndrome fully understood?

The primary genetic cause is well-documented, but researchers are still studying why the clinical presentation of TNF Receptor Associated Periodic Syndrome varies so significantly between individuals, even those within the same family. Current research focuses on "modifier genes" and how they might influence the intensity of the inflammatory response. Understanding these mechanisms is critical for developing more targeted, personalized therapies for patients living with this rare condition.

Next steps

• Consult a clinical geneticist to confirm a diagnosis through targeted TNFRSF1A gene sequencing.


• Connect with the 4 members of the DiseaseMaps.org community who share lived experiences with TNF Receptor Associated Periodic Syndrome.


• Work with a rheumatologist to manage systemic inflammation and minimize long-term risks like amyloidosis.

Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.

References

• NIH Genetic and Rare Diseases (GARD) Information Center: TNF Receptor-Associated Periodic Syndrome


• Orphanet: TNF receptor-associated periodic syndrome (ORPHA:3197)


• OMIM (Online Mendelian Inheritance in Man): TNFRSF1A-Associated Periodic Syndrome (#142680)