TNFRSF1A [corrected] R92Q mutation, autoinflammatory symptoms and multiple sclerosis in a cohort from Argentina

Area of Science:

• Genetics
• Immunology
• Neurology

Background:

• Systemic autoinflammatory diseases are genetic disorders causing unprovoked inflammation.
• TNF receptor associated periodic syndrome (TRAPS) involves TNFRSF1A gene mutations.
• Emerging research suggests TNFRSF1A mutations may play a role in Multiple Sclerosis (MS).

Purpose of the Study:

• To investigate the frequency of the TNFRSF1A R92Q mutation in Argentinean MS patients.
• To compare clinical characteristics and treatment responses between R92Q carriers and non-carriers.
• To assess the R92Q mutation's role as a risk factor for MS through a case-control study.

Main Methods:

• Genotyping of 90 Argentinean MS patients and 78 healthy controls for the TNFRSF1A R92Q mutation.
• Comparison of autoinflammatory symptoms, MS clinical features, and treatment outcomes between carriers and non-carriers.
• Case-control analysis to determine the mutation's association with MS risk.

Main Results:

• The R92Q mutation was identified in 5.5% of MS patients.
• Four R92Q carriers reported prior autoinflammatory symptoms.
• No significant differences in MS clinical features or treatment response were observed between carriers and non-carriers.
• The R92Q mutation was significantly more frequent in MS patients than controls, increasing MS risk approximately 4.5-fold.

Conclusions:

• The TNFRSF1A R92Q mutation is a common finding in Argentinean MS patients.
• This genetic variant is a potential risk factor for developing Multiple Sclerosis.
• Further research is warranted to elucidate the mechanisms linking this mutation to MS pathogenesis.