NCT00047996

Brief Summary

The collection of human specimens from both patients and healthy volunteers is necessary for the development of laboratory assays to further basic and clinical research studies. This protocol defines the purposes for which specimens will be collected and establishes general conditions under which sample collection will be performed.

Trial Health

73
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
2,000

participants targeted

Target at P75+ for all trials

Geographic Reach
1 country

2 active sites

Status
enrolling by invitation

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Posted

Study publicly available on registry

October 23, 2002

Completed
12 days until next milestone

Study Start

First participant enrolled

November 4, 2002

Completed
3.7 years until next milestone

First Submitted

Initial submission to the registry

July 11, 2006

Completed
Last Updated

June 5, 2026

Status Verified

June 3, 2026

First QC Date

July 11, 2006

Last Update Submit

June 4, 2026

Conditions

Keywords

DNAEndothelial FunctionLeukocyte Gene ExpressionRNANatural HistorySickle CellCoronary Artery DiseaseCADHealthy VolunteerHV

Outcome Measures

Primary Outcomes (1)

  • evaluating the role of nitric oxide, inflammatory mediators, and endothelial function in inflammatory diseases of the vasculature such as sickle cell disease, coronary artery disease, pulmonary vascular or advanced lung disease, malaria, and sep...

Study Arms (1)

Group1

Clinical Center Patients, Healthy Volunteers

Eligibility Criteria

Age18 Years - 100 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Normal subjects, Male/Female

You may qualify if:

  • Males or females of age 18 years and older can be included in the study.

You may not qualify if:

  • Individuals without sickle cell disease or other chronic anemias who wish to donate blood will be excluded if the hemoglobin is less than 10 g/dL for women or less than 12g/dL for men.
  • Individuals with sickle cell disease or other chronic anemias will be excluded from donating blood samples if the hemoglobin is less than 6 g/dL.
  • A participant s most recent CBC result, obtained in the past 12 months, will be used to determine eligibility.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

National Institutes of Health Clinical Center

Bethesda, Maryland, 20892, United States

Location

INOVA Fairfax Hosptial

Fairfax, Virginia, 22042, United States

Location

Related Publications (1)

  • Tumburu L, Ghosh-Choudhary S, Seifuddin FT, Barbu EA, Yang S, Ahmad MM, Wilkins LHW, Tunc I, Sivakumar I, Nichols JS, Dagur PK, Yang S, Almeida LEF, Quezado ZMN, Combs CA, Lindberg E, Bleck CKE, Zhu J, Shet AS, Chung JH, Pirooznia M, Thein SL. Circulating mitochondrial DNA is a proinflammatory DAMP in sickle cell disease. Blood. 2021 Jun 3;137(22):3116-3126. doi: 10.1182/blood.2020009063.

Related Links

MeSH Terms

Conditions

Anemia, Sickle CellCoronary Artery Disease

Condition Hierarchy (Ancestors)

Anemia, Hemolytic, CongenitalAnemia, HemolyticAnemiaHematologic DiseasesHemic and Lymphatic DiseasesHemoglobinopathiesGenetic Diseases, InbornCongenital, Hereditary, and Neonatal Diseases and AbnormalitiesCoronary DiseaseMyocardial IschemiaHeart DiseasesCardiovascular DiseasesArteriosclerosisArterial Occlusive DiseasesVascular Diseases

Study Officials

  • Swee Lay Thein, M.D.

    National Heart, Lung, and Blood Institute (NHLBI)

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
NIH
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 11, 2006

First Posted

October 23, 2002

Study Start

November 4, 2002

Last Updated

June 5, 2026

Record last verified: 2026-06-03

Locations