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Brain enzyme levels under scrutiny in depression study

NCT ID NCT05703685

Recruiting now Knowledge-focused Sponsor: National Institute of Mental Health (NIMH) Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study aims to see if people with major depressive disorder have lower levels of an enzyme called PDE4B in their brains compared to healthy volunteers. Researchers will use PET and MRI scans along with an experimental radioactive tracer to measure this enzyme. The study involves up to 5 clinic visits and includes both people with depression and healthy adults aged 18 to 70.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

Depression depressive disorder major depressive disorder

As listed by the trial registrant

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

DEPRESSION

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••