Recruiting

Studies of the Natural History of Sickle Cell Disease

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What is being collected

Data Collection

Collected from today forward - Prospective
Who is being recruted

Anemia+14

+ Anemia, Hemolytic

+ Anemia, Hemolytic, Congenital

From 2 to 90 Years
See all eligibility criteria
How is the trial designed

Case-Only

Examining characteristics of individuals with a disease in order to identify genetic or environmental factors contributing to the condition.
Observational
Study Start: April 2004
See protocol details

Summary

Principal SponsorNational Heart, Lung, and Blood Institute (NHLBI)
Study ContactNancy A Asomaning
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: April 29, 2004

Actual date on which the first participant was enrolled.

This protocol will permit the establishment of a repository of biospecimens from individuals affected with sickle cell disease to identify and evaluate underlying disease mechanism(s), and to facilitate understanding of the pathogenesis and natural history of vaso-occlusive painful crisis and other complications of the disease. Patients will be evaluated with a medical history and physical examination and routine laboratory studies will be obtained as needed to assess diagnosis, disease activity, and disease complications and to monitor for treatment-related responses and toxicities. This protocol may also provide for the continued storage and analysis of clinical and research data, and biospecimens previously obtained from other NIH Institutional Review Board (IRB)-approved protocols with subject consent. Patients eligible for other research protocols will be offered an opportunity to participate in these studies after signed informed consent has been obtained. Apart from such protocols, any medical care or additional tests/investigations recommended or provided to the patient will be consistent with routine standards of practice and will be provided in consultation with the patient s referring physician.

Official TitleStudies of the Natural History of Sickle Cell Disease 
NCT00081523
Principal SponsorNational Heart, Lung, and Blood Institute (NHLBI)
Study ContactNancy A Asomaning
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

3500 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Case-only

These studies focus only on individuals who have a specific disease. Researchers examine patterns—often genetic or environmental—to uncover what might be linked to the condition.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 2 to 90 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

AnemiaAnemia, HemolyticAnemia, Hemolytic, CongenitalAnemia, Sickle CellCardiovascular DiseasesHematologic DiseasesHemic and Lymphatic DiseasesHemoglobinopathiesHypertensionHypertension, PulmonaryLung DiseasesCongenital, Hereditary, and Neonatal Diseases and AbnormalitiesRespiration DisordersRespiratory Tract DiseasesVascular DiseasesGenetic Diseases, InbornAcute Chest Syndrome

Criteria

* 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.

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Study Objectives

Study Objectives

Primary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 3 locations

Recruiting

Childrens National Health Center

Washington D.C., United StatesSee the location
Recruiting

National Institutes of Health Clinical Center

Bethesda, United States
Completed

Suburban Hospital

Bethesda, United States
Recruiting
3 Study Centers