Table 1.

Immunologic analyses of patients with the chromosome 22q11.2 deletion syndromea

Immunologic parameterNo. (%) of patients with IgA level/no. testedP value
<10 mg/dl>10 mg/dl
CD4, <900 cells/mm31/4 (25)10/28 (36)1.00
CD8, <400 cells/mm31/4 (25)11/28 (39)1.00
Phytohemagglutinin, <50% of control0/4 (0)6/28 (21)0.57
IgG in serum, <553 mg/dl0/4 (0)3/28 (11)1.00
IgM in serum, <35 mg/dl0/4 (0)2/28 (7)1.00
Nonprotective tetanus or diphtheria titerb 0/3 (0)1/24 (4)1.00
  • a Some patients have more than one finding.

  • b Studies were not performed for every patient.