Finally, T-cell deficiency may be progressive with age and not readily apparent at birth or in the first months of life.
Both B and T cells are affected. The phenotype is T–B–NK–. ADA deficiency is an autosomal recessive disorder in which the age at presentation varies.
INCLUDED, SCID, AUTOSOMAL RECESSIVE, T CELL-NEGATIVE, B CELL-NEGATIVE, NK CELL-POSITIVE, AND SENSITIVITY TO IONIZING RADIATION DUE TO NHEJ1 DEFICIENCY, INCLUDED, SCID, AUTOSOMAL