Sickle cell study aims to uncover disease patterns
NCT ID NCT00081523
First seen Jun 27, 2026 · Last updated Sep 17, 2026 · Updated 20 times
Summary
This study follows up to 3,500 people with sickle cell disease to learn more about how the condition progresses and what complications arise. Participants receive their usual medical care outside the hospital and visit the clinic for check-ups and research tests. No experimental treatments are given; the goal is simply to gather information that could improve future care.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 3,500 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2004
- Lead sponsor
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A government research agency
The lead sponsor is the US National Institutes of Health.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
The study will be open to all eligible subjects based on inclusion and exclusion criteria and who provide informed consent. Patients may self-refer, be recruited through the NIH office of recruitment, and may include patients participating on other NIH IRB approved protocols. The study will also be open to all eligible pediatric patients receiving medical care for SCD at Children s National.
- Ages
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2 to 90 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
* INCLUSION CRITERIA: * Individuals with known or suspected sickle cell disease * 2 years of age and older * Willing to provide informed consent or appropriate informed consent from parent or legal guardian * Patients seen at sickle outpatient clinics at any one of the participating centers (CNHS or NIH). EXCLUSION CRITERIA: * Patient and/or guardian unable and unwilling to give informed consent or assent. * Patients less than 2 years of age. Individuals with known or suspected sickle cell disease will meet the inclusion criteria to enroll in this protocol and can undergo study activities. However, if the individual is found not to have sickle cell disease after enrollment, they will be removed from the protocol, and their research samples will be discarded but they will be counted toward the study accrual. The study team will notify the individual about their removal from the study and explain the reason for it. Any necessary regulatory reporting will also be completed.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Childrens National Health Center
RECRUITINGWashington D.C., District of Columbia, 20010, United States
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National Institutes of Health Clinical Center
RECRUITINGBethesda, Maryland, 20892, United States
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Suburban Hospital
COMPLETEDBethesda, Maryland, 20814, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Sickle cell clues to diabetes risk hidden in DNA
- Can adding common pain drugs reduce morphine needs in sickle cell crises?
- Gene editing offers hope for a One-Time sickle cell cure
- Tiny biochip could reveal sickle cell severity
- Can a milder transplant cure sickle cell and thalassemia in adults?
- Can an antioxidant supplement calm sickle cell blood cells?