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P0195 - Characteristics of Therapeutic Sequences of Patients Enrolled in the PRO-MSACTIVE Study Evaluating Ocrelizumab in Active Relapsing Multiple Sclerosis (ID 727)

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At any time in multiple sclerosis (MS) management, a disease-modifying therapy (DMT) stop, restart or change can occur. In PRO-MSACTIVE (NCT03589105), an open-label, single-arm, phase IV study designed to evaluate the efficacy, safety and impact of ocrelizumab on patient reported outcomes in patients with active relapsing MS (RMS), every patient’s treatment history was gathered.


To describe the therapeutic management of French patients with active RMS (relapsing-remitting [RRMS] and secondary progressive [SPMS]), as reported at baseline, prior to the first ocrelizumab infusion (IV OCR).


PRO-MSACTIVE is being conducted in France (46 active centers) in patients with active RMS, ≥18 years old, naïve or pretreated with DMT. Washout periods between the last DMT taken by the patient and baseline IV OCR were pre-specified. For each patient, all previous DMTs were collected during the screening period, ≤4 weeks prior to baseline.


Treatment history was documented for the 422 enrolled patients: 376 RRMS and 46 SPMS. Most (74.9%) had at least one previous DMT prior to the first IV OCR: 73.9% for RRMS and 82.6% for SPMS patients. The longest therapeutic sequence includes 8 DMTs prior to the first IV OCR. The most frequent previous DMTs were β interferons and assimilated products (IFN-AP) (51.4% all patients, 49.2% RRMS, 69.6% SPMS); selective oral immunosuppressants (30.8% all patients, 30.6% RRMS, 32.6% SPMS; mainly fingolimod); and teriflunomide (24.2% all patients, 24.5% RRMS, 21.7% SPMS). IFN-AP ranked first among the older DMTs (46.5% all patients, 45.0% RRMS, 58.7% SPMS). Mean time (standard deviation, SD) from the oldest DMT to the first IV OCR was 6.55 yrs (5.44) for RRMS patients, and 14.20 yrs (8.46) for SPMS patients. The most recent DMTs prior to IV OCR were fingolimod (22.8% all patients, 23.7% RRMS, 15.2% SPMS); dimethyl fumarate (14.7% all patients, 15.7% RRMS, 6.5% SPMS); teriflunomide (14.5% all patients, 14.6% RRMS, 13.0% SPMS); IFN-AP (14.0% all patients, 14.1% RRMS, 13.0% SPMS); and natalizumab (4.3% all patients, 4.5% RRMS, 2.2% SPMS). Mean time (SD) from the most recent DMT to the first IV OCR was 2.65 yrs (2.12) for RRMS patients and 3.01 yrs (2.85) for SPMS patients.


Treatment history with DMTs prior to the first IV OCR is well characterized in the PRO-MSACTIVE study. These data permit a better understanding of the therapeutic strategies in RMS patients in current medical practice.