MEFV and familial Mediterranean fever: Our study suggests that in children with FMF, the MEFV M694V homozygous gene mutation may be associated with a specific intestinal phenotype, characterized clinically by outside-of-flares abdominal pain, growth retardation, and iron deficiency and histologically by mild digestive eosinophilic inflammation found in all parts of the gastrointestinal tract with an inconsistent increase in crypt apoptosis.