Individuals and families with DDX41 or similar inherited blood cancer risk variants
Official title: Longitudinal Study of Individuals and Families With Aberrations in DDX41 or Similar Cancer Predisposition Variants
Run by National Institutes of Health Clinical Center (CC) · NCT07019155 · Data updated 2026-11-12
We will follow people and their family members who have DDX41 or other inherited blood cancer risk variants to see how often and when they develop MDS or AML and related health changes.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 1 Month to 120 Years |
| Sex | All |
| Enrollment | 510 (estimated) |
| Sponsor | National Institutes of Health Clinical Center (CC) NIH |
| Drugs / interventions | chemotherapy |
| Locations | 1 site (Bethesda, Maryland) |
| Status | Recruiting |
| Started | July 24, 2025 |
| Main results expected | June 15, 2035 |
| Study ends | June 15, 2035 |
| Registry record updated | October 16, 2026 |
| Trial ID | NCT07019155 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are people aged 1 month or older with a confirmed or suspected germline DDX41 variant, other HHM gene variants, or first- or second-degree relatives of someone with a confirmed or suspected HHM variant.
✕Probably not a fit
People without HHM variants and without a close relative carrying such variants are unlikely to gain direct clinical benefit from this observational natural history study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a natural history observational study enrolling people (age ≥1 month) with germline DDX41 changes, other hereditary hematopoietic malignancy (HHM) gene variants, or relatives of affected individuals. Participants aged 3 and older will have an initial clinic visit with optional annual follow-ups and routine assessments including physical exam, blood and urine testing, and reviews of daily functioning. Optional biospecimen collection may include saliva, stool, nails, skin, and in some cases bone marrow sampling to document molecular and clinical changes over time. The goal is to define the clinical course, timing of disease onset, and associated molecular events to improve identification and management of HHM-related MDS/AML.
Why it matters
Potential benefit: If successful, the study could improve early detection, genetic counseling, and clinical care plans for people with DDX41 and related hereditary variants.
How similar studies have gone: Previous research has identified DDX41 as a recurrent germline predisposition to myeloid neoplasms and shown that associated cancers often respond to standard chemotherapy, but comprehensive long-term natural history data remain limited.
Who can join: the full rules
Show full inclusion / exclusion criteria
* INCLUSION CRITERIA: * Age \> 1 month old. * Participants with history of aberrations that affect the DDX41 gene, DDX41 RNA, or DDX41 protein (Cohorts 1-2) OR Participants with history of aberrations in another HHM variant (Cohort 3) OR Participants with history of absence of HHM variants, who have first or second degree relative with history of confirmed or suspected HHM variant(s) per participant report (Cohort 4). * Participants must have an identified healthcare provider outside of NIH who manages participant care, and any diagnostic clinical findings provided by this study. * Ability of participant or parent/guardian to understand and the willingness to sign a written consent document. EXCLUSION CRITERIA: None.
Where it's running
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National Institutes of Health Clinical Center
Bethesda, Maryland, United States Recruiting
Study contacts
- Principal investigator: Sung-Yun Pai, M.D. — National Cancer Institute (NCI)
- Study coordinator: Rebecca B Alexander
- Email: rebecca.alexander@nih.gov
- Phone: (240) 781-4037
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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.