National Institute of Mental Health (NIMH)

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, National Institute of Mental Health (NIMH) sits in the top decile of US sponsors by registered trial count (#103 of 15,742 sponsors by registered trial count).

343 total trials 42 currently recruiting 256 completed early-phase tilt top decile by trial count

National Institute of Mental Health (NIMH): 343 sponsored US clinical trials, 42 recruiting.

National Institute of Mental Health (NIMH) sponsors 343 registered US clinical trials on ClinicalTrials.gov, 42 of them currently recruiting, and 256 completed. 29 of these trials are in Phase 3-4 (later-stage) and 106 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Healthy, with 21 trials.

Top-decile sponsor footprint

National Institute of Mental Health (NIMH) ranks in the top decile of sponsors by registered trial count (#103 of 15,742 sponsors by registered trial count). Volume at this scale usually reflects a long institutional pipeline, read phase tilt and therapeutic areas below before treating it as current-year activity.

Trial completion reliability score

D 56/100

256 of 296 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (86.5%), vs. national p10 68.4% / p90 100% among 1,234 sponsors with at least 10 decided trials. Still-open trials (Recruiting, Active-not-recruiting, Not-yet-recruiting) are excluded since they have not reached an outcome yet.

Open and recent trials

343 total, page 4 of 7

COMPLETED Phase 1

PET Whole Body Imaging Using a Peripheral Benzodiazepine Receptor Ligand [C-11]PBR28

NCT00407693

COMPLETED Phase 4

Minocycline to Treat Childhood Regressive Autism

NCT00409747

COMPLETED

PET Scanning of Adults With Attention Deficit Hyperactivity Disorder (ADHD)

NCT00397748

COMPLETED

Protein Synthesis in the Brain of Patients With Fragile X Syndrome

NCT00362843

COMPLETED Phase 1

Antidepressant Effects on cAMP Specific Phosphodiesterase (PDE4) in Depressed Patients

NCT00369798

TERMINATED Phase 2

The Antidepressant Efficacy of the Anticholinergic Scopolamine

NCT00369915

COMPLETED

Identifying the Role of Oxytocin and Vasopressin in the Functioning of Neurocognitive Systems Involved in Mood Disorders

NCT00325065

COMPLETED

Clinical and Immunological Investigations of Subtypes of Autism

NCT00298246

COMPLETED Phase 1

PET Imaging of Brain Peripheral Benzodiazepine Receptors

NCT00283920

COMPLETED Phase 1

PET Imaging of Brain 5-HT(1A) Receptors Using [(11)C](-)-RWAY

NCT00263523

COMPLETED Phase 1

PET Whole Body Biodistribution and Test Retest Bain Imaging Studies Using a Phosphodiesterase 4 Inhibitor (R)-[11C]Rolipram

NCT00250172

COMPLETED Phase 2

Use of an Antibiotic as an Enhancer for the Treatment of Social Phobia

NCT00128401

COMPLETED Phase 2

Riluzole to Treat Child and Adolescent Obsessive-Compulsive Disorder With or Without Autism Spectrum Disorders

NCT00251303

COMPLETED

Dopamine Receptor Imaging in Mood Disorders

NCT00116077

COMPLETED

Attention and Visual Perception

NCT00111293

TERMINATED Phase 2

Org 24448 to Treat Major Depression

NCT00113022

COMPLETED

The Role of Norepinephrine in Emotional Processing

NCT00109642

COMPLETED

Velocardiofacial (VCFS; 22q11.2; DiGeorge) Syndrome Study

NCT00105274

COMPLETED

Effect of Transcranial Magnetic Stimulation on Memory

NCT00105118

COMPLETED

Brain Changes in Children and Adolescents With Behavioral Problems

NCT00104039

COMPLETED

Neurobiological Mechanisms in Panic Disorder

NCT00103987

COMPLETED

Role of Substance P in Post-Traumatic Stress Disorder

NCT00102102

COMPLETED Phase 4

Brain Activity Changes and Treatment Response in Depressed People Who Are Receiving Antidepressant Medication

NCT00375843

COMPLETED

Hormonal Causes of Menstrual-Related Mood Disorders

NCT00100360

COMPLETED

Effects of Tryptophan Depletion on Brain Processing of Emotions in Patients With Mood Disorders

NCT00097175

COMPLETED

Relationship of Dopamine to Cognitive Function in Parkinson's Disease

NCT00094601

COMPLETED

Effect of Gabapentin on GABA Concentration and Emotional Processing

NCT00094510

COMPLETED

Investigating the Role of Serotonin in Emotional Processing Through the Use of Tryptophan Depletion

NCT00090831

COMPLETED

Psychological Mechanisms of Behavioral Dysregulation

NCT00352456

COMPLETED Phase 1

Evaluation of Substance P Neurotransmission in Panic Disorder by PET Imaging of NK1 Receptors With [18F]SPA-RQ

NCT00088738

COMPLETED Phase 1

Rapid Antidepressant Effects of Ketamine in Major Depression

NCT00088699

COMPLETED Phase 1

Positron Emission Tomography Imaging of Dopamine Receptors Using the Tracer [11C]NNC-112

NCT00088517

TERMINATED Phase 2

Treatment of Menstrually Related Disorders With Continuous v. Interrupted Oral Contraceptives

NCT00089414

COMPLETED Phase 2

Lexapro and Pramipexole and to Treat Major Depression

NCT00086307

COMPLETED

Serotonin Transporters in Alcoholism

NCT00085865

COMPLETED

Family Study of Affective and Anxiety Spectrum Disorders

NCT00071786

COMPLETED

Genetic Causes of Panic Disorder

NCT00083265

COMPLETED

Serotonin Transporters in Obsessive-Compulsive-Related Disorders

NCT00082550

COMPLETED Phase 1

Use of [18F]FECNT in Positron Emission Tomography

NCT00083629

COMPLETED

Function of Catecholamines in the Brain During Depression

NCT00082030

COMPLETED Phase 1

Dutasteride to Treat Women With Menstrually Related Mood Disorders

NCT00082043

COMPLETED

Neurocardiac Control in Major Depression

NCT00084162

COMPLETED Phase 2

Rapid Antidepressant Effects of Yohimbine in Major Depression

NCT00078715

COMPLETED

FMRI Study of Performance During a Probabilistic Reversal Learning Task in Depression

NCT00075296

COMPLETED

The Psychobiology of Childhood Temperament

NCT00060775

COMPLETED

Evaluating Brain Responses to Facial Expressions in Major Depressive Disorder

NCT00071123

COMPLETED

Psychobiological Mechanisms of Resilience to Trauma

NCT00069212

COMPLETED Phase 2

Propranolol for the Treatment of Acute Stress Disorder

NCT00069355

COMPLETED Phase 2

An Investigation of the Antidepressant Efficacy of the 5-HT2A Antagonist, M100907, in Combination With Citalopram in Treatment Resistant Depression

NCT00070694

COMPLETED

Brain Structure and Function Before and After Treatment for Post-Traumatic Stress Disorder

NCT00069225

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Phase Distribution

PhaseTrial count
Phase 1 61
Phase 2 45
Phase 3 8
Phase 4 21

What is open in the National Institute of Mental Health (NIMH) pipeline

42 recruiting of 343 indexed (12% open); 256 completed (75%).

Phase mix: 29 late (III/IV) vs 106 early (I/II) (early-phase heavy).

Top condition: Healthy (21 trials), 9 others listed.

How open-pipeline share is computed

Recruiting share is recruiting_count divided by trial_count for this sponsor in the public registry export. Status can change between pulls; treat the figure as a research-attention snapshot, not product availability.

National Institute of Mental Health (NIMH): open-pipeline peers nationwide

Peers matched on 343 registered trials and 12% open enrollment, not the therapeutic-area sidebar.

National Institute of Mental Health (NIMH) sits at or above the median trial volume and below the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot). 2×2 strategic matrix plotting 9 entities by Total trials (X) and Recruiting share (Y), with a crosshair dividing the plot into four quadrants. Higher volume & more openFocused & more openHigher volume, mostly closedSmaller & mostly closed 0100200300400 5%10%15%20%25% Total trials Recruiting share National Institute of Mental Health (NIMH)Children's Oncology GroupMontefiore Medical CenterOhio State University Comprehensive Cancer CenterCedars-Sinai Medical CenterAugusta UniversityUniversity of IowaDaiichi SankyoFriends Research Institute
National Institute of Mental Health (NIMH) sits at or above the median trial volume and below the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot).

National Institute of Mental Health (NIMH) sits at or above the median trial volume and below the median recruiting share among these 9 nationwide peers -- the two do not always move together.

Sponsors near 343 trials (± recruiting share)

Sponsors near 12% open enrollment (± trial volume)

What to do with this National Institute of Mental Health (NIMH) page

343 registered trials is a research-attention snapshot, not an endorsement of National Institute of Mental Health (NIMH) or any single study.

  • 42 of National Institute of Mental Health (NIMH)'s trials are currently recruiting, check each one's own eligibility criteria before contacting a site. Browse recruiting trials
  • Healthy is the condition National Institute of Mental Health (NIMH) studies most, compare against other sponsors active in the same condition before evaluating a specific study. See Healthy trials
  • Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

National Institute of Mental Health (NIMH) pipeline card: 343 registered trials from official public datasets.Report a data error.