IL2RG and severe combined immunodeficiency: X-SCID affecting the gastrointestinal tract has been only reported in a 6-month-old boy who was identified with a point mutation in the IL2RG gene (c.536_552delTGAACCACTGTTTGGAG; p.Leu179Argfs*26), representing the T–B+NK– phenotype of SCID [11].