A Study of MabThera (Rituximab) in Patients With Idiopathic Thrombocytopenic Purpura.

Percentage of participants with an overall response at Week 8 achieving a CR or PR as evaluated by platelets, new or increased Idiopathic Thrombocytopenic Purpura (ITP)-related treatments and corticosteroids given for Adverse Events (AEs). CR was defined as a platelet count of greater than (>) 150x10^9/ liters (L) over at least 2 consecutive measurements at least 2 weeks apart, but no more than 60 days apart, with no increase in concomitant ITP therapy or initiation of new ITP therapy. PR was defined as platelet count of >50x10^9/L over at least 2 consecutive measurements at least <2 weeks apart, but no more than 60 days apart, with no increase in concomitant ITP therapy or initiation of new ITP therapy. Overall response rate (participants who achieved CR or confirmed PR) was evaluated using platelets, new or increased ITP related treatments, and corticosteroids given for AEs.

Percentage of participants with CR, PR, and MR at Week 8 as evaluated by platelet count where CR is greater than or equal to (≥)150x10^9/L, PR ≥ 50x10^9/L, MR equals (=) 30x10^9/L over 2 consecutive measurements at least 2 weeks apart but no more than 60 days apart with no increase in concomitant therapy or initiation of new ITP therapy.

CR was defined as platelet counts >150x10^9/L over ≥2 consecutive measurements ≥2 weeks apart, but no more than 60 days apart, and with no increase in concomitant ITP therapy or initiation of new ITP therapy.

Time to CR was defined as the time from the first infusion to the first date on which CR was achieved. CR was defined as platelet counts >150x10^9/L over ≥2 consecutive measurements ≥2 weeks apart, but no more than 60 days apart, and with no increase in concomitant ITP therapy or initiation of new ITP therapy. Participants without an event were censored at the date of last assessment.

PR was defined as platelet counts >50x10^9/L over ≥2 consecutive measurements ≥2 weeks apart, but no more than 60 days apart, with no increase in concomitant ITP therapy or initiation of new ITP therapy.

Time to response was defined as the time from the first infusion to the first date on which PR was achieved. PR was defined as platelet counts > 50x10^9/L over ≥ 2 consecutive measurements ≥ 2 weeks apart, but no more than 60 days apart, with no increase in concomitant ITP therapy or initiation of new ITP therapy.

MR was defined as participants registered with chronic ITP with a platelet count of >30x10^9/L over ≥2 consecutive measurements ≥2 weeks apart, but no more than 60 days apart, with a 50 to 100% reduction in the dose intensity of concomitant ITP therapy compared with that at screening, and with no increase in concomitant ITP therapy or initiation of new ITP therapy.

Time to response was defined as the time from the first infusion to the first date on which MR was achieved. MR was defined as participants registered with chronic ITP with a platelet count of >30x10^9/L over ≥2 consecutive measurements ≥2 weeks apart, but no more than 60 days apart, with a 50 percent (%) to 100% reduction in the dose intensity of concomitant ITP therapy compared with that at screening, and with no increase in concomitant ITP therapy or initiation of new ITP therapy.

The number of participants with a durable CR assessed in CR responders whose responses were sustained from Week 8 through to the end of the study or withdrawal, irrespective of change of treatment. CR was defined as platelet counts >150x10^9/L over ≥2 consecutive measurements ≥ 2 weeks apart, but no more than 60 days apart, and with no increase in concomitant ITP therapy or initiation of new ITP therapy.

Duration of response was assessed in all responders who reached Week 8 and was defined as the time from Week 8 to the end of CR, irrespective of change of treatment. CR was defined as platelet counts >150x10^9/L over ≥2 consecutive measurements ≥2 weeks apart, but no more than 60 days apart, and with no increase in concomitant ITP therapy or initiation of new ITP therapy.

Duration of PR was assessed in all responders who reached Week 8 and was defined as the time from Week 8 to the end of PR, irrespective of change of treatment. PR was defined as platelet counts >50x10^9/L over ≥2 consecutive measurements ≥2 weeks apart, but no more than 60 days apart, with no increase in concomitant ITP therapy or initiation of new ITP therapy.

Duration of response was assessed in all responders who reached Week 8 and was defined as the time from Week 8 to the end of MR, irrespective of change of treatment. MR was defined as participants registered with ITP in relapse with a platelet count of > 30x10^9/L over ≥2 consecutive measurements ≥2 weeks apart, but no more than 60 days apart, with no increase in concomitant ITP therapy or initiation of new ITP therapy. Participants registered with chronic ITP with a platelet count of >30x10^9/L over ≥2 consecutive measurements ≥2 weeks apart, but no more than 60 days apart, with a 50% to 100% reduction in the dose intensity of concomitant ITP therapy compared with that at screening, and with no increase in concomitant ITP therapy or initiation of new ITP therapy.

Percentage of participants with an event of initiation of new ITP therapy and/or increase in dose of existing ITP therapy, including date on which decision made in relation to splenectomy, from time of first treatment to Week 52.

Median time in days to initiation of new ITP therapy and/or increase in dose of existing ITP therapy, including date on which decision made in relation to splenectomy, from time of first treatment to Week 52.

Percentage of participants with a therapeutic response, defined as achieving CR, PR, or MR assessed at Week 26 and Week 52 or hematological response, defined as achieving CR, PR, or MR at Week 8. CR was defined as no platelet response or no reduction in the dose intensity of concomitant ITP therapy compared with that at screening. PR response was defined as at least a minor platelet response that enabled a 50% to 99% reduction in the dose intensity of concomitant ITP therapy compared with that at screening. MR was defined as at least a minor platelet response that enabled a 1% to 49% reduction in the dose intensity of concomitant ITP therapy compared with that at screening.

Number of therapeutic responder participants by CR, PR, MR, or no response (NR) measured at Week 26 and Week 52. CR was defined as no platelet response or no reduction in the dose intensity of concomitant ITP therapy compared with that at screening. PR was defined as at least minor platelet response that enabled a 50% to 99% reduction in the dose intensity of concomitant ITP therapy compared with that at screening. MR was defined as at least minor platelet response that enabled a 1% to 49% reduction in the dose intensity of concomitant ITP therapy compared with that at screening.

Value of mean CD19+ B cell count at baseline. The standard reference range for CD19 is 0.05 to 0.35 x10^9/L.

Actual values of CD19+ mean B cell count assessed at Weeks 3 and 8, and Months 4, 6, 8, 10 and 12, and last day. The standard reference range for CD19 is 0.05 to 0.35 x10^9/L.