Spectrum of Disorders Associated with Elevated Serum IgG4 Levels Encountered in Clinical Practice

Table 1

Demographics and serum IgG4 levels (𝑛=158).

Characteristic	All patients	IgG4-RD (𝑛=29)	No IgG4-RD (𝑛=129)
Age, yr	51.4±20.3	58.3±16.9	49.9±20.8
Male sex, no. (%)	98 (62)	21 (72)	77 (60)
Serum IgG4 level, mg/dL, median (range)	202 (141–3150)	223 (149–3150)	187 (141–1030)

Data are presented as mean ± SD, unless otherwise indicated.
IgG4-RD: IgG4-related disease.
IgG4-RD includes definite and possible cases.