Sign in
Taking people in United StatesPhase 4

Tests a personalized hydroxyurea dose for children with sickle cell disease

Tests hydroxyurea dosed to each child's absorption in sickle cell anemia.

Key facts

Who runs it
Children's Hospital Medical Center, Cincinnati
Where
Cincinnati, United StatesSee the site
Trial code
Registry title
Effectiveness of Nontraditional Hydroxyurea Algorithms: Novel and Clinical Evaluations (ENHANCE)
Status
Recruiting
Phase
Phase 4
People taking part
50 people, planned
Started
19 Dec 2024
Expected to end
Dec 2028
Type of study
Interventional
Treatments tested
  • PK-optimized oral hydroxyurea at MTD until 15 years of age.
Record updated
16 September 2025

Who can take part

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

The trial is looking for people with sickle cell anemia (HbSS or HbSβ0) who, with their family and doctor, have decided to start hydroxyurea.

Age
6 months or older
Sex
All sexes can join.
Disease stage
Sickle cell anemia (HbSS) or sickle-β0-thalassemia (HbSβ0).
Earlier treatment
People who get regularly scheduled blood transfusions now cannot join.

Main reasons for not taking part

  • Current treatment with regularly scheduled blood transfusions
  • Sickle-hemoglobin C disease (HbSC)
  • Sickle-β+-thalassemia (HbSβ+)

The registry criteria, word for word

Show all 5 criteriaShow less

Who can take part

  • Diagnosis of sickle cell anemia (HbSS) or sickle-β0-thalassemia (HbSβ0)
  • Age 6 months at the time of enrollment
  • Clinical decision by patient, family, and healthcare provider to initiate hydroxyurea therapy

Who cannot take part

  • Current treatment with regularly scheduled blood transfusions
  • Sickle-hemoglobin C disease (HbSC), sickle-β+-thalassemia (HbSβ+)

Where in United States

  • Cincinnati Children's Hospital Medical CenterCincinnati, United StatesContact: Charles T. Quinn, M.D., M.S.Taking people

About the trial

What the trial wants to find out

The main reason for this research study is to learn more about hydroxyurea and the treatment of sickle cell anemia (SCA). Hydroxyurea is a medication that has been studied for many years and has been shown to provide benefits for people with SCA.

Read full original descriptionShow less

In this research study, the investigators hope to learn more about how to improve the dosing and monitoring of hydroxyurea and learn more about the long-term effects of hydroxyurea over time. Hydroxyurea is usually dosed based only on your weight. Our study will use a new way to select a starting dose that is based on how each patient absorbs hydroxyurea.

The group in the trial

  • Observational Treatment Group (Single Arm)Treatment being tested

    All children with sickle cell anemia who are started on hydroxyurea for clinical indicators between 6 months and 5 years of age can do so on this observational study with PK-optimized hydroxyurea dosing.

    Treatment: PK-optimized oral hydroxyurea at MTD until 15 years of age.

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
Effectiveness of Nontraditional Hydroxyurea Algorithms: Novel and Clinical Evaluations (ENHANCE)
Plain-language title
Tests a personalized hydroxyurea dose for children with sickle cell diseaseGenerated from the registry record. The registry title is the official one.
AI summary
From the trial's eligibility criteria. Read by machine on 12 November 2026.
Record updated
16 September 2025