Table 1.

Characteristics of patients with ITP included in the study

Baseline characteristics∗	Patients with ITP (n = 24)
Age in y, median† (range)	60 (36-90)
Male (%)†	57
Platelet count, median (range)	66 (2-459)
Years since diagnosis of ITP, median (range)†	8 (0-58)
Newly diagnosed or persistent (0-12 mo), n (%)	5 (22%)
Chronic (>12 mo), n (%)	18 (78%)
Number of previous therapies, median† (range)	3 (0-10)
Splenectomized† (%)	26%
IVIg treated (n)‡	15
IVIg responsive (%)	73%

IVIg, intravenous immunoglobulin.

^∗At time of serum collection.

^†Data available for 23 of 24 patients with ITP.

^‡IVIg administered ≥4 weeks before study enrollment.