ClinicalTrials.gg
CompletedNCT02220309Updated Jan 5, 2026

Stanford RAD-AT Study (Research on Anxiety and Depression - Anhedonia Treatment)

An observational study in Anxiety and Depression, sponsored by Stanford University. Completed at 3 sites in United States. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-01-05.

Primary conditionDepressionRegistry: Anxiety DisordersReclassifiedWhy we changed it
Registry
Anxiety Disorders — the first condition term the registry derived for this study.
ClinicalTrials.gg
Depression
Why
  1. The registry often attaches Anxiety Disorders to studies about something else, and this study's title and listed conditions do not name it.
  2. The study's listed conditions name Depression.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Stanford University · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
167
Ages
18 Years to 65 Years
Sex
All
01

Study summary

This research study is aimed at understanding behaviors and brain circuits that relate to anxiety and depression. Our goal is to learn which circuits of the brain are involved in anxiety and how these circuits might affect daily functioning.

This study has recently added an additional treatment component: participants undergo a 12 week course of either Pramipexole medication or rTMS therapy (explained below). The ultimate goal of the study is to offer participants experiencing anxiety and depression a treatment that is alternative to ones that have failed them in the past, and to apply the knowledge we gain from investigating the brain circuits involved in anxiety and depression to help personalize treatments.

We invite anyone who has recently experienced any symptoms of anxiety and/or depression to participate (no diagnosis is required to participate).

Read the detailed description

If you are eligible and choose to participate, we'll ask you to come in for 2 separate testing visits and 8 weeks of treatment in between.

In both the pre-treatment and post-treatment testing visit, you would complete game-like tasks on the computer, undergo a non-invasive MRI brain scan, and answer some questions about your emotional health. The entire visit takes place during 1-2 days at Stanford and lasts about 4-5 hours. We'll also ask you to complete a follow-up 12 weeks later, from home, during which we'll again ask you some questions on your emotional health.

The 8-week treatment phase will consist of your choice of either TMS (transcranial magnetic stimulation) or Pramipexole (a medication for depression). You will meet with study coordinators and MDs each week (Pramipexole) or each day (TMS) to receive treatment. You will also be asked to complete weekly online surveys to monitor your mood during the 2-month course of treatment.

To inquire more about participation, you can either sign up online or contact us.

Sign up online: http://med.stanford.edu/williamslab/research/current/rad.html Contact us: Call or text (650) 600-1609 or email rad-at-study@stanford.edu

02

Conditions studied

  • Anxiety
  • Depression

Keywords

  • Anxiety
  • Depression
  • Social Anxiety Disorder
  • Bipolar disorder II
  • PTSD
  • GAD
  • Phobia
03

In context

Depression Reclassified

8,577 studies on the registry are indexed under Depression; 1,720 are open to participants now.

This study's enrollment of 167 is close to the median of 175 across 1,257 observational studies indexed under Depression.

Browse Depression studies →

Lead sponsor

Stanford University is the lead sponsor of 2,168 studies on the registry; 431 are open to participants now.

Of its 267 completed or terminated interventional studies of FDA-regulated products, 207 (78%) have results posted.

Compared within Depression, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Anxiety Disorders. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

We expect to enroll 160 individuals spanning the spectrum of anxiety and associated mood symptoms. These individuals include patients of the Gronowski Center, a community clinical psychology center in Palo Alto. We will also recruit from the community through various advertisements. Further, participants will include healthy people recruited by advertisement.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Recent experiences of anxiety and/or depression
  • Ages 18-65

Exclusion criteria

Exclusion Criteria:

  • Specific psychiatric medications (case-by-case basis)
  • A diagnosis of Bipolar 1 Disorder, Schizophrenia, or Obsessive Compulsive Disorder
  • Any of the following medical conditions: Parkinson's disease; liver or kidney disease; history of epilepsy or seizures; history of cardiovascular disorders (specifically orthostatic hypotension)
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
167 participants (actual)
Patient registry
No
Biospecimen retention
None retained

Groups and cohorts

  • Anxiety and mood disorders

    Drug: Pramipexole Oral Tablet

Interventions

06

What researchers measure

Primary outcomes

  1. Assessments of symptoms and daily functioning

    General demographics questionnaires, alcohol use questionnaire, substance use questionnaires, Mood and Anxiety Symptom Questionnaire, Penn State Worry Questionnaire, Health at Work Performance Questionnaire, WHO Quality of Life questionnaire, Satisfaction with Life Survey, Emotion Regulation Questionnaire, Brief COPE questionnaire, Early Life Stress questionnaire, Quick Inventory of Depressive Symptomatology, Beck Depression Inventory, PTSD Checklist - Civilian Version, Beck Anxiety Inventory, Barratt Impulsiveness Scale, MINI Neuropsychiatric Interview

    Time frame: 12 weeks

  2. Brain imaging

    Non-invasive MRI brain scan to see function and structure of brain.

    Time frame: 12 weeks

  3. Cognitive assessment

    WebNeuro is an objective assessment of cognitive strengths and weaknesses. It provides an accurate and objective assessment of person's cognitive function and efficiency.

    Time frame: 12 weeks

07

Study locations

3 sites
  • Gronowski Center-5150 El Camino Real
    Los Altos, California 94022, United States
  • VAPAHCS/Palo Alto MIRECC-3801 Miranda Avenue
    Palo Alto, California 94304, United States
  • Stanford University Department of Psychiatry
    Stanford, California 94305, United States
08

References and documents

Publications

  • Williams LM, Goldstein-Piekarski AN, Chowdhry N, Grisanzio KA, Haug NA, Samara Z, Etkin A, O'Hara R, Schatzberg AF, Suppes T, Yesavage J. Developing a clinical translational neuroscience taxonomy for anxiety and mood disorder: protocol for the baseline-follow up Research domain criteria Anxiety and Depression ("RAD") project. BMC Psychiatry. 2016 Mar 15;16:68. doi: 10.1186/s12888-016-0771-3. PubMed 26980207 ↗
09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Aug 2013, a primary completion of Dec 2024 and a completion of Apr 2025. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 13, 2014
First posted
Aug 19, 2014
Start
Aug 11, 2013
Primary completionActual
Dec 18, 2024
CompletionActual
Apr 2, 2025
Last update
Jan 5, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 5, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02220309
Responsible party
Leanne Williams (Professor, Stanford University) — Principal investigator
First posted
Aug 19, 2014
Start date
Aug 11, 2013
Primary completion
Dec 18, 2024
Completion
Apr 2, 2025
Last update
Jan 5, 2026

Study contacts

Leanne M Williams, PhD
principal investigator · Stanford University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2025. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion