About 50% to 80% of these patients have family histories of atopy while 20% have family histories of food allergies mediated by IgE. In addition, typical presentation of FPIES has been described in identical twins 1.
La historia familiar de atopia es positiva en aproximadamente 50-80% de los casos, incluyendo 20% familiar con historia de alergia alimentaria mediada por Ig E. Asimismo, se ha descrito FPIES de presentación típica en gemelos idénticos 1.