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Could a stronger dose of an old drug protect children with sickle cell from organ damage?

NCT ID NCT07708714

Disease control Sponsor: Children's Hospital Medical Center, Cincinnati Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 16, 2026 · Last updated Jul 17, 2026 · Updated 1 time

Summary

This study tests whether a higher, personalized dose of hydroxyurea is safe and works better than a fixed low dose for children with sickle cell anemia who live in regions where malaria is common. The trial includes children who were already taking a fixed dose and compares them to a group not taking hydroxyurea. Researchers will check for organ damage in the brain, kidneys, and bones to see if the optimized dose offers more protection.

What this could mean

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

Active substance
hydroxyurea at an optimized dose
What this could lead to
If successful, this could show that a higher, personalized dose of hydroxyurea is safe and reduces organ damage in children with sickle cell anemia living in malaria-endemic regions.
What could go wrong
This is an early-phase extension study, so results are preliminary. The higher dose may increase risks of infections or malaria, and the benefits seen may not apply to all children.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

About 250 people

The number the study aims to enrol. It can still change while the study runs.

Started

May 2026

Expected to finish

Nov 2032

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

11 to 18 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Adolescents with confirmed SCA who are currently enrolled in the NOHARM MTD Study of hydroxyurea at the Mulago Hospital Sickle Cell Clinic (MHSCC), will be eligible for the NOHARM MTD LT version 2.0 extension study after completing re-consent. An age-matched untreated (hydroxyurea-naïve) group of adolescents will also be enrolled as a Comparator Cohort. This will comprise 75 children from Kampala and surrounding districts, ages 11 - 18 years of age, with confirmed SCA.

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Conditions

The condition(s) this trial relates to.

sickle cell disease

As listed by the trial registrant

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

Sickle cell anemia in children Sickle cell disease

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Mulago Hospital Sickle Cell Clinic

    RECRUITING

    Kampala, Uganda

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