Supplementary Figure 4.

Serum IgE and relationship to corticosteroid therapy in IgG4-RD. (A) Serum IgE concentrations in IgG4-RD patients at diagnosis before corticosteroids (0 weeks) and after 12 weeks of corticosteroid therapy (n = 15). On the y-axis is serum IgE concentrations kIU/L. Dashed line is the upper limit of IgE (≥125 kIU/L). Two-tailed paired Student t test P values, where **P < .01. (B) Serum IgE concentrations in IgG4-RD patients during follow-up over 12 months of corticosteroid therapy. The dashed line is the same as in A.