MEFV and familial Mediterranean fever: The MEFV gene has 10 exons, and there are nearly 400 variants identified to date.1 Among the mutations that develop in this gene, V726A, M680I, E148Q, M694V, and M694I mutations constitute approximately 70%-80% of cases.5 However, none of the known mutations have been identified in approximately 10%-20% of clinically diagnosed FMF patients.17 In our study, MEFV gene mutations were detected in 107 patients.