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Clinical trials and research at Zenas BioPharma (USA), LLC

• 2Clinical trials
• 23Countries

All recruiting trials (2)

• Orelabrutinib for non-active secondary progressive multiple sclerosis

  This trial will try daily orelabrutinib versus placebo in adults with non-active secondary progressive multiple sclerosis to see if it slows disability progression.

  Recruiting at 89 sites Phase 3 Zenas BioPharma (USA), LLC · Phoenix, Arizona and 89 other locations · NCT07299019

• Orelabrutinib treatment for primary progressive multiple sclerosis

  This trial tests whether orelabrutinib, a brain-penetrant BTK inhibitor, can slow disability progression in adults with primary progressive MS.

  Recruiting at 86 sites Phase 3 Zenas BioPharma (USA), LLC · Pheonix, Arizona and 85 other locations · NCT07067463

Quick answers

How many clinical trials run by Zenas BioPharma (USA), LLC are recruiting right now?

2, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.

Where are these trials running?

In 23 countries. The most sites are in Australia (2 trials), Bulgaria (2 trials), Croatia (2 trials), Czechia (2 trials), Estonia (2 trials). Each study page lists its sites and which ones are recruiting.

What phases are they in?

Phase 3: 2. Trials with no phase listed are usually device, behavioural or observational studies.

How do I join one?

Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.

Find the studies that fit you

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