Short answer · Medically reviewed summary · Last updated: 2026-05-08
TNF Receptor Associated Periodic Syndrome (TRAPS) is considered an ultra-rare autoinflammatory disorder, with an estimated prevalence of less than 1 in 1,000,000 people globally. While exact numbers are difficult to ascertain due to frequent underdiagnosis, the condition affects males and females equally and can manifest at any age from infancy to adulthood. Is TNF Receptor Associated Periodic Syndrome considered rare? Yes, TNF Receptor Associated Periodic Syndrome is classified as an ultra-rare genetic disease.
What is the prevalence of TNF Receptor Associated Periodic Syndrome?
Prevalence of TNF Receptor Associated Periodic Syndrome: how many people are affected worldwide, differences by sex and region, with sources.
TNF Receptor Associated Periodic Syndrome (TRAPS) is considered an ultra-rare autoinflammatory disorder, with an estimated prevalence of less than 1 in 1,000,000 people globally. While exact numbers are difficult to ascertain due to frequent underdiagnosis, the condition affects males and females equally and can manifest at any age from infancy to adulthood.
Is TNF Receptor Associated Periodic Syndrome considered rare?
Yes, TNF Receptor Associated Periodic Syndrome is classified as an ultra-rare genetic disease. Because it is often misdiagnosed as more common conditions like systemic juvenile idiopathic arthritis or recurrent fevers of unknown origin, the true prevalence of TNF Receptor Associated Periodic Syndrome is likely higher than currently documented in medical literature. Within the DiseaseMaps.org community, four individuals have shared their experiences, highlighting the rarity and the value of connecting with others who share this specific diagnosis.
What are the demographic patterns of TNF Receptor Associated Periodic Syndrome?
Epidemiological data for TNF Receptor Associated Periodic Syndrome indicates the following characteristics:
- Gender Distribution: There is no significant gender bias; TNF Receptor Associated Periodic Syndrome affects males and females with equal frequency.
- Age of Onset: While most cases present during childhood, adult-onset TNF Receptor Associated Periodic Syndrome is well-documented, making it a condition that requires lifelong clinical awareness.
- Geographic/Ethnic Variation: Originally identified in families of Irish and Scottish descent, TNF Receptor Associated Periodic Syndrome has since been reported in diverse ethnic populations worldwide, though it remains most frequently recognized in individuals of European ancestry.
Why is accurate prevalence data for TNF Receptor Associated Periodic Syndrome challenging?
The difficulty in tracking TNF Receptor Associated Periodic Syndrome stems from its clinical variability and the reliance on genetic testing to confirm the diagnosis. Many patients experience symptoms for years before receiving an accurate genetic confirmation, leading to significant gaps in epidemiological reporting. Consistent registries and international collaboration are essential to better understand the true global burden of this condition.
Next steps
- Consult with a rheumatologist or an immunologist specializing in autoinflammatory diseases.
- Request genetic testing for the TNFRSF1A gene if you have a history of prolonged, recurrent fevers.
- Join the DiseaseMaps.org community to connect with other patients and caregivers navigating life with this rare condition.
Medical disclaimer: This information is for educational purposes and should not replace professional medical advice, diagnosis, or treatment.
References
- Orphanet: Rare Disease Database (ORPHA:3305)
- NIH Genetic and Rare Diseases (GARD) Information Center
- OMIM (Online Mendelian Inheritance in Man): #142680
- Eurofever Registry data on autoinflammatory diseases
