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Study identifier: NCT04102423 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

CHIP/CCUS Natural History Protocol

Condition: Clonal Hematopoiesis of Indeterminate Potential · Clonal Cytopenia of Undetermined Significance  ·  Sponsor: National Heart, Lung, and Blood Institute (NHLBI)

PhaseN/A
Planned participants306
Who can joinAll sexes, 18 Years to 99 Years
Healthy volunteersNo

About this study

Background: Clonal Hematopoiesis of Indeterminate Potential (CHIP) is a change in a person s DNA that can increase a person s risk of developing blood cancers or cardiovascular disease. CHIP occurs mostly occurs in older people. Clonal cytopenia of undetermined significance (CCUS) occurs when one or more blood cell types is lower than it should be and is associated with a change in their DNA. Researchers want to learn more about how CHIP and CCUS progress. Objective: To examine the natural history of people in a study of CHIP and CCUS to (1) verify the association of myeloid somatic mutations with atherosclerosis and blood cancers, and (2) find new potential clinical associations. Eligibility: Adults 18 and older with CHIP with a somatic pathogenic variant associated with blood cancers. Adults with CCUS are also needed. Design: Potential participants will be screened with gene testing. For this, they will give a blood sample. They will also be enrolled in NHLBI screening protocol #97-H-0041. Those who pass this screening will visit the NIH Clinical Center for more screening tests. For this, they will give a blood sample. They will have a physical exam. They will give their medical history. They may give a urine sample. Those with CCUS will have bone marrow taken. Eligible participants will give blood and urine samples. Their heart activity will be monitored and tested. The arteries in their neck will be assessed using ultrasound. They will have liver and heart scans. …

This description comes directly from the study's public registry record.

Talk to the study team

Chanelle A Hutchinson  ·  (301) 827-1094  ·  chanelle.hutchinson@nih.gov

Emma M Groarke, M.D.  ·  (301) 496-5093  ·  emma.groarke@nih.gov

Always discuss trial participation with your own doctor first.

Locations (1)

National Institutes of Health Clinical CenterBethesda, Maryland, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT04102423