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Blood clues: could MicroRNAs reveal hidden links between a parasite and mental illness?

NCT ID NCT07346833

Knowledge-focused Sponsor: Benha University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 at 55 women who have a chronic (long-term) infection with the Toxoplasma parasite and also have a mental health condition like schizophrenia, depression, or bipolar disorder. Researchers want to see if tiny molecules called microRNAs in the blood can help tell these conditions apart and show how the infection affects mental health. No treatment is given—this is an observational study to gather knowledge.

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 55 people

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

Started

Nov 2025

Expected to finish

Apr 2026

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.

Who is studied

The study population consists of adult women (aged 18 years and older) who have been clinically diagnosed with Schizophrenia, Major Depressive Disorder, or Bipolar Disorder according to DSM-5 criteria. These patients are recruited from the psychiatric departments of Benha and Tanta Universities. Within this group, the population is divided into two cohorts: those with chronic toxoplasmosis (confirmed by the presence of anti-Toxoplasma IgG antibodies) and those without the infection. To ensure a specific focus on chronic cases, the study excludes patients with acute toxoplasmosis (IgM positive) or other unrelated psychiatric conditions. No healthy volunteers are included, as the research specifically aims to differentiate biomarkers among patients already experiencing psychological disturbances.

Ages

18 to 50 years

Sex

Female participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Confirmed psychiatric diagnosis of Schizophrenia (SCZ), Major Depressive Disorder (MDD), or Bipolar Disorder (BD) according to DSM-5 criteria. * Seronegative for T. gondii IgM (to ensure infection is not in the acute phase). * Signed informed consent. Exclusion Criteria: * Psychiatric disorders other than Schizophrenia, MDD, and Bipolar Disorder. Seropositive for T. gondii IgM (indicating acute infection). Refusal to participate.

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Conditions

The condition(s) this trial relates to.

bipolar disorder major depressive disorder schizophrenia toxoplasmosis

As listed by the trial registrant

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

Toxoplasmosis

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

  • Benha faculty of Medicine

    RECRUITING

    Banhā, El Qalyoubia, 13511, Egypt

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