Among CID participants, one had severe combined immunodeficiency (SCID) status post-hematopoietic stem cell transplant, three had CID with syndromic features, two had purine nucleoside phosphorylase (PNP) deficiency, three had 22q11 deletion syndrome, and 25 had other types of CID. The gene discussed is PNP; the disease is immunodeficiency disease.