New pill shows promise for rare childhood diseases

NCT ID NCT06153173

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This phase 2 trial is testing the drug mirdametinib in 40 people aged 2 and older with Langerhans cell histiocytosis or similar disorders. The goal is to see if this oral medication works better and has fewer side effects than current treatments. Participants take the drug twice daily for up to 13 cycles, and doctors will monitor response using scans and blood tests.

What this could mean

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

Active substance

Mirdametinib (a pill taken by mouth twice daily)

What this could lead to

If successful, this could offer a more effective and less toxic treatment option for people with certain histiocytic disorders.

What could go wrong

This is a small, early-phase trial (40 participants) with no control group. The drug may not work as hoped or could have unexpected side effects.

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.

histiocytosis Histiocytosis, Langerhans-Cell juvenile xanthogranuloma Langerhans cell histiocytosis sinus histiocytosis with massive lymphadenopathy

As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Cincinnati Children's Hospital Medical Center

    RECRUITING

    Cincinnati, Ohio, 45229, United States

    Contact

    Contact Email: •••••@•••••

    Contact Email: •••••@•••••