Understanding the natural progression of blood cell disorders
Official title: Investigation of the Natural Progression of Clonal Hematopoiesis of Indeterminate Potential and Clonal Cytopenia of Undetermined Significance.
Run by National Institutes of Health Clinical Center (CC) · NCT04102423 · Data updated 2026-11-12
This study is trying to understand how certain blood cell disorders develop over time in adults by looking at their genes and seeing if they are linked to blood cancers and other health issues.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 99 Years |
| Sex | All |
| Enrollment | 306 (estimated) |
| Sponsor | National Institutes of Health Clinical Center (CC) NIH |
| Locations | 1 site (Bethesda, Maryland) |
| Status | Recruiting |
| Started | March 3, 2020 |
| Main results expected | September 15, 2033 |
| Study ends | September 15, 2033 |
| Registry record updated | September 28, 2026 |
| Trial ID | NCT04102423 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates include adults aged 18 and older with CHIP or CCUS and specific somatic pathogenic variants.
✕Probably not a fit
Patients with known hematological malignancies or severe cytopenias will not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study aims to investigate the natural history of Clonal Hematopoiesis of Indeterminate Potential (CHIP) and Clonal Cytopenia of Undetermined Significance (CCUS) in adults. Researchers will screen participants for somatic pathogenic variants associated with blood cancers through blood samples and gene testing. The study seeks to verify the links between these genetic mutations, atherosclerosis, and the development of blood cancers, while also exploring new clinical associations. The findings could enhance understanding of these conditions and their progression.
Why it matters
Potential benefit: If successful, this study could lead to better risk assessment and management strategies for patients with CHIP and CCUS.
How similar studies have gone: While the study focuses on the natural history of these conditions, similar approaches have shown promise in understanding pre-neoplastic phases in other hematological disorders.
Who can join: the full rules
Show full inclusion / exclusion criteria
* Participants with Clonal Hematopoiesis of Indeterminate Significance (CHIP): INCLUSION CRITERIA: * Greater than or equal to 18 years of age * Willingness and capacity to provide written informed consent * Presence of a somatic pathogenic variant associated with hematological malignancy * Variant allele fraction of greater than or equal to 2% in at least one identified somatic pathogenic variant EXCLUSION CRITERIA: * Known diagnosis of a hematological malignancy or bone marrow failure syndrome (excluding MGUS or MBL) * Presence of a cytopenia: --Hemoglobin, \<10 g/dL; platelet count, \<100 X 10\^9 /L; or absolute neutrophil count, \<1.5 X 10\^9 /L * Pregnant at the time of recruitment Participants with Clonal Cytopenia of Uncertain Significance (CCUS): INCLUSION CRITERIA: * Greater than 18 years of age * Willingness and capacity to provide written informed consent * Presence of a somatic pathogenic variant associated with hematological malignancy without morphological evidence of myelodysplasia and without a MDS defining cytogenetic abnormality * Variant allele fraction of greater than or equal to 2% in at least one identified somatic pathogenic variant * Bone marrow aspirate and biopsy excluding hematological malignancy and MDS * Presence of a cytopenia for \>30 days * Hemoglobin, \<10 g/dL; platelet count, \<100 X10\^9 /L; or absolute neutrophil count, \<1.5 X10\^9 /L * At least 2 CBCs documented in a non-hospitalized patient at least 3 days apart EXCLUSION CRITERIA: * Known diagnosis of a hematological malignancy or bone marrow failure syndrome (excluding MGUS or MBL) * Morphological evidence of dysplasia on bone marrow aspirate / biopsy 10% dysplastic cells in any hematopoietic lineage * Ringed sideroblasts \>15% * Presence of MDS defining cytogenetic abnormality * Del(7q) * del(5q) * 17q or t(17p) * Del(13q) * del(11q) * del(12p) or t(12p) * del(9q) * idic(X)(q13) * t(11;16) * t(3;21) * t(1;3) * t(2;11) * inv(3)/t(3;3) * t(6;9) --Note: As a sole cytogenetic abnormality in the absence of morphological criteria, gain of chromosome 8, del(20q) and loss of chromosome Y are not considered definitive evidence of MDS. * Alternate hematological diagnosis causing cytopenia * Pregnant at time of recruitment
Where it's running
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National Institutes of Health Clinical Center
Bethesda, Maryland, United States Recruiting
Study contacts
- Principal investigator: Fernanda Gutierrez Rodrigues — National Heart, Lung, and Blood Institute (NHLBI)
- Study coordinator: Chanelle A Hutchinson
- Email: chanelle.hutchinson@nih.gov
- Phone: (301) 827-1094
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Testing genetic markers for early detection of myeloid cancers and bone marrow failure
This study is testing if looking for specific genetic markers in blood and tissue samples can help find myeloid cancers and bone marrow issues earlier in people who show early signs but aren't diagnosed yet.
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Clonal Hematopoiesis Effects with Chemo and Radiation in Solid Cancers
This study tests whether clonal hematopoiesis affects outcomes for adults with solid cancers who are receiving chemotherapy or radiation.
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Nicotinamide Riboside and Pterostilbene in lower risk MDS and high-risk CCUS
This phase 2 study tests whether nicotinamide riboside plus pterostilbene can help improve blood counts in adults with lower risk MDS or high-risk CCUS who are not transfusion-dependent.
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Precision colchicine to target atherosclerosis in people with TET2-CHIP after ACS
This study tests whether including colchicine helps post-ACS patients, guided by TET2-CHIP status, to reduce plaque growth.
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Evaluating the risk of blood cancers in firefighters
This study is testing if firefighters who have been exposed to harmful substances are at a higher risk for blood cancers and related conditions.
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Early treatment for high-risk Clonal Cytopenia of Undetermined Significance
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.