<unk>  SCID is caused by a mutation is the<unk>  gene, which is involved in the development of T cells.
ZAP70 deficiency
DOCK8 deficiency
PMM2 deficiency
Janus kinase 3 deficiency
ZC4H2 deficiency
WNT4 deficiency
NGLY1 deficiency
Caspase-8 deficiency