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Can a new map of symptoms untangle adult ADHD and depression?

NCT ID NCT04504474

Knowledge-focused Sponsor: Health Sciences North Research Institute Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 Sep 24, 2026 · Last updated Sep 25, 2026 · Updated 1 time

Summary

Researchers are using a statistical method called network analysis to study how symptoms of major depressive disorder and attention-deficit hyperactivity disorder overlap in adults. The study includes adults diagnosed with either or both conditions who can consent. The goal is to see which symptoms are most central and how reliably the symptom network holds together, which may help doctors better understand and treat these co-occurring conditions.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If the approach works, it could help doctors spot which symptoms link ADHD and depression, guiding more targeted treatment for adults who have both.
What could go wrong
This is a very small study with only one participant, so the findings may not apply to others. Network analysis is a statistical method, and the results depend on the quality of symptom reports.

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

1 person

The number who actually took part.

Started

Jun 2018

Finished

Dec 2023

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

We will gather a recruitment of 500 male and female outpatients from the Psychiatric Outpatient Clinic at Kirkwood Site attached to Health Sciences North.

Ages

18 to 60 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: * participants have a diagnosis of MDD or ADHD or both * participants are competent to consent to the study

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Conditions

The condition(s) this trial relates to.

attention deficit hyperactivity disorder, inattentive type attention deficit-hyperactivity disorder major depressive disorder

As listed by the trial registrant

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

ADHD

Contacts and locations

Locations

  • Kirkwood Site - Health Sciences North

    Greater Sudbury, Ontario, P3E 1X3, Canada

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