Scientists peer into depressed brains to spot missing enzyme

NCT ID NCT05703685

First seen Oct 31, 2025 · Last updated May 17, 2026 · Updated 31 times

Summary

This study uses a special PET scan tracer to measure levels of an enzyme called PDE4B in the brain. Researchers want to see if people having a major depressive episode have lower PDE4B levels than healthy volunteers. Up to 108 adults aged 18-70 with depression or healthy will undergo brain scans and tests. The goal is to better understand depression, not to treat it.

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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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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: •••••@•••••

Conditions

Explore the condition pages connected to this study.