MEFV and familial Mediterranean fever: Following detailed phenotypic evaluations and phenotype-genotype correlations, 16/44(36%) of patients in Group 1 were diagnosed as YAOS, 3/44(6.8%) as atypical FMF, and the remaining with mixed diagnoses of two or more SAIDs, such as YAOS, FMF, NLRP3-AID, NLRP12-AID, and TRAPS.