A genotype-first approach reveals the molecular basis of pyrin inflammasome activation
A comprehensive screening of genetic variants in a major inflammation gene reclassifies hundreds of previously unclear mutations, improving diagnostic accuracy for rare autoinflammatory syndromes worldwide.
Using a high-throughput functional screen, this study stratified 265 MEFV missense variants (most previously classified as VUS) by pyroptosis induction and mechanistically demonstrated that pyrin hyperactivation can occur via at least two distinct molecular pathways—one dependent on CDC42-B30.2 domain interaction and one independent. This genotype-first approach offers a scalable framework for reclassifying the >400 MEFV variants and improving genetic diagnosis of PAADs worldwide.
What the study was
- Study design
- mechanistic
- Population
- MEFV variant carriers and FMF/PAAD patients; 265 MEFV missense variants screened
- Sample size
- 265
- Category
- Genomics/Precision Medicine
- Maturity
- Exploratory
- Journal
- Science Immunology
Why it surfaced
Systematic functional classification of 265 MEFV variants in Science Immunology directly addresses the clinical bottleneck of VUS reclassification in familial Mediterranean fever and related PAADs; reveals multiple mechanistic pathways; published with companion paper (42566498) on same day; Kyoto University group with strong institutional pedigree; directly actionable for genetic counseling.
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