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Scientists track rare gene variant to unlock blood disorder mysteries

NCT ID NCT03854318

Knowledge-focused Sponsor: National Human Genome Research Institute (NHGRI) Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 11, 2026 · Updated 14 times

Summary

This study follows people of all ages who have or may have a RUNX1 gene variant, which can cause bleeding problems and increase the risk of blood cancers. Researchers will collect medical history, blood samples, and bone marrow over many years to understand how the condition develops. The goal is to improve diagnosis, monitoring, and eventually treatment for these rare inherited platelet disorders.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this research could lead to better ways to diagnose and monitor familial platelet disorders, and possibly point toward future treatments.
What could go wrong
This is an observational study, not a treatment trial. It may not directly benefit participants, and findings may take years to translate into clinical practice.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 1,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2019

Expected to finish

Dec 2099

An estimate. End dates often move.

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Patients (and direct family members of patients) enrolled in this protocol will have been referred with a known or suspected RUNX1 mutation.

Ages

1 day to 100 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

* INCLUSION CRITIERIA: Patients enrolled in this protocol will have been referred with a known or suspected variant in the RUNX1 gene. Patients with suspected RUNX1 variants are those with clinical features of FPD but who have not been tested for RUNX1, or who were negative on standard testing. The Principal Investigator, along with consulting specialists, will review the medical records of prospective patients and offer enrollment based upon the potential to help the individual, to learn from the patient, or to initiate clinical or basic research suggested by the patient's workup. Persons interested in participation may be given a screening questionnaire to determine eligibility. The questions about hematologic manifestations in the screening questionnaire are important to help us determine if RUNX1 variants are likely to be pathogenic, or if there is a high clinical suspicion of RUNX1 (abnormal platelets, bleeding, bruising, leukemia etc.). Unaffected family members may be asked to enroll in the study to provide specimens (saliva, blood, skin) for genetic testing, next-generation sequencing, and other related studies. Enrolled subjects can be any sex and any age. There are no upper or lower age restrictions on this study. EXCLUSION CRITIERIA: There are no exclusionary criteria.

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Conditions

The condition(s) this trial relates to.

acute myeloid leukemia hematopoietic and lymphoid system neoplasm hereditary thrombocytopenia and hematologic cancer predisposition syndrome hereditary thrombocytopenia and hematological cancer predisposition syndrome associated with RUNX1 neoplasm Rare Diseases

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

FPDMM Inherited hematological diseases Rare diseases

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States

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