New drug combo aims to ease nerve pain in rare blood disorder

NCT ID NCT05939037

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This phase 2 trial tests whether the drug zanubrutinib, combined with standard rituximab, can improve nerve damage and disability in people with a rare blood condition called IgM MGUS. The study includes 35 adults across two Dutch hospitals. Participants take zanubrutinib daily for at least 6 months, and those who respond well may continue longer. The main goal is to see if walking, arm use, and overall function get better, while also checking for side effects.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

zanubrutinib (a targeted cancer drug) combined with rituximab (an antibody therapy)

What this could lead to

If successful, this combination could offer a new treatment option for people with nerve damage caused by a rare blood condition, potentially improving mobility and daily function.

What could go wrong

This is a small, early-phase trial with only 35 participants and no placebo group. The drug may cause side effects, and results may not apply to all patients. Long-term benefits are uncertain.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

monoclonal gammopathy of uncertain significance polyneuropathy associated with IgM monoclonal gammapathy with anti-MAG

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • University Medical Center Utrecht

    Utrecht, Utrecht, 3584CX, Netherlands