FIGURE 1:

Treatment groups. Single asterisk denotes 65 of the 166 courses of rituximab were given during the same flare as cyclophosphamide. Double asterisk denotes in 43 of the courses of rituximab, cyclophosphamide was co-administered for treatment of disease relapse. In 80 of the courses, rituximab was given for disease flare without concurrently giving cyclophosphamide. Hash denotes information included on first course of rituximab only. Data missing on one person in this group. Double hash denotes information included on first course of rituximab only. Data missing on three people in this group.