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| Subnormal IgG subclass phenotype | Percent of patients (n) |
|---|---|
| G1/G2/G3 | 44.4 (8) |
| G2/G3 | 50.0 (9) |
| G1/G2/G3/G4 | 5.6 (1) |
| Total | 100.0 (18) |
a Abbreviations: IgGSD, immunoglobulin G subclass deficiency; IgG, immunoglobulin G.
