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Could a light beam lift depression when drugs fail?

NCT ID NCT07543328

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests a non-invasive light therapy called transcranial photobiomodulation (tPBM) on the forehead to help people with treatment-resistant depression. About 40 adults who still have moderate-to-severe depression despite taking antidepressants will receive tPBM at different frequencies. The goal is to see if it reduces depressive symptoms, especially physical complaints like pain or fatigue, and to understand how it affects brain activity.

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 40 people

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

Started

Jan 2026

Expected to finish

Mar 2027

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

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

Ages

18 to 65 years

Sex

Anyone

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: Must have a current diagnosis of Major Depressive Disorder (MDD). The clinical severity must be evaluated by a psychiatrist as moderate or above, defined as a Clinical Global Impression-Severity (CGI-S) score \> 4 and a 17-item Hamilton Depression Rating Scale (HDRS-17) total score ≥ 18. Must be currently receiving stable antidepressant treatment for at least four weeks but showing inadequate response (treatment-resistant). This study will be conducted as an add-on therapy. Must have full behavioral capacity, normal intellectual functioning, and the ability to comprehend and sign the informed consent form. Exclusion Criteria: Individuals diagnosed with Bipolar Disorder or Schizophrenia. Individuals with current or recent Substance Use Disorder. History of organic brain lesions (e.g., neurodegenerative diseases, epilepsy, stroke) or any medical conditions affecting central nervous system function. Individuals with abnormal intellectual functioning based on clinical judgment (e.g., suspected intellectual disability, severe learning difficulties). Individuals who are currently pregnant (due to limited evidence regarding the safety of tPBM during pregnancy). Any other condition that, in the investigator's judgment, would render the participant unable to cooperate, unsuitable for the study, or unwilling to sign the informed consent.

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Conditions

The condition(s) this trial relates to.

Depressive Disorder, Treatment-Resistant major depressive disorder

As listed by the trial registrant

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

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

  • Taipei Veterans General Hospital

    RECRUITING

    Taipei, 11217, Taiwan

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