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Scientists hunt for clues to fatigue in Low-Platelet patients

NCT ID NCT06979765

Knowledge-focused Sponsor: Assistance Publique - Hôpitaux de Paris 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study looks for substances in the blood that might be linked to fatigue in people with low platelet counts (thrombocytopenia). Researchers think a protein called BDNF, which is stored in platelets, could play a role. They will measure BDNF levels in 280 patients and healthy volunteers and compare them with fatigue scores. The goal is to better understand why fatigue happens, not to test a new treatment.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 280 people

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

Started

Mar 2025

Expected to finish

Jun 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

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

Ages

8 years and older

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 criteria for patients (adults or minors): * Patients with constitutional or autoimmune (chronic or persistent ITP with last treatment administration ≥ 3 weeks) thrombocytopenia (platelet count \< 150×109/L) already diagnosed * patient not being treated and not receiving serotonin reuptake inhibitor (SSRI) or norepinephrine (SNRI) or antithrombotic treatments (antiplatelet or anticoagulant) in the 10 days prior to inclusion * affiliation to social security (beneficiary or assignee) * patient followed in consultation in one of the recruiting haematology departments * Patient (or parent) having received a detailed explanation of the research project and having consent by signing the consent form before any research-specific procedure Inclusion criteria for healthy volunteers: * Age- (± 5 years) and sex-matched healthy adult controls * Non-thrombocytopenic patients and not receiving antithrombotic, SNRI or SSRI therapy or if applicable, last treatment ≥ 10 days * affiliation to social security (beneficiary or assignee) * adults who received a detailed explanation of the research project and having consent by signing the consent form before any research-specific procedure Non inclusion criteria (adults and minors): * Adult patients under legal protection (guardianship or curatorship) Thrombocytopenic patients treated with antithrombotics, serotonin reuptake inhibitors (SSRIs) or noradrenaline reuptake inhibitors (SNRIs) * Minor patients weighing less than 20 kg Non inclusion criteria for healthy adult controls: * Healthy adult volunteers under legal protection (guardianship, curatorship or safeguard of justice). * Pregnant women

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Conditions

The condition(s) this trial relates to.

thrombocytopenia

As listed by the trial registrant

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

Thrombopenia

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

  • Hôpital Bichat-Claude Bernard

    RECRUITING

    Paris, 75018, France

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