A Study of Orelabrutinib in Patients With Primary Progressive Multiple Sclerosis

Trial statusRecruiting
Trial phasePhase 3
Trial typeInterventional
Biological sexAll
Age18-60
SponsorZenas BioPharma (USA), LLC

About this trial

Orelabrutinib is a CNS-penetrable BTK inhibitor. This is a phase 3, randomized, double-blind, parallel-group, multicenter study to evaluate the efficacy and safety of orelabrutinib compared with placebo in patients with PPMS. Patients will be treated for approximately 30 to 60 months, with a minimum treatment duration of 12 months. The study will enroll approximately 705 subjects in a 2:1 randomization (orelabrutinib: placebo), globally.

Eligibility criteria

Qualifiers

18 to 60 years of age, inclusive

Diagnosed with Primary Progressive MS (PPMS) according to 2017 McDonald criteria

Participant must have documented evidence of disability progression observed during the 24 months before screening.

Expanded disability status scale (EDSS) score between 3.0 to 6.5 points, inclusive, at Screening.

Disqualifiers

Diagnosed with relapsing-remitting MS (RRMS) or secondary progressive MS (SPMS)

Immunologic disorder other than MS or any other conditions requiring oral, intravenous (IV), intramuscular, or intra-articular corticosteroid therapy.

History or current diagnosis of other neurological disorders that may mimic MS

History of any other significant active medical condition

Trial design

Treatments tested in this trial

  • Orelabrutinib
  • Placebo

Treatment groups

705 Participants
are divided into 2 treatment groups

Sponsors and collaborators