| Not Yet Recruiting | Locating Biomarkers in OCD Through Behavioral Tasks NCT03313622 | Baylor College of Medicine | — |
| Recruiting | Implementing Team-Based Treatment for Pediatric Anxiety in Community Mental Health Settings NCT06934525 | Bradley Hospital | N/A |
| Recruiting | Retrospective Analyses of the Greenbrook Database Evaluating Mental Health Treatments NCT06997549 | Neuronetics | — |
| Recruiting | Light Therapy for Obsessive-compulsive Disorder (OCD) NCT06720090 | Washington University School of Medicine | EARLY_Phase 1 |
| Recruiting | Computer Game, Qualitative, and MEG/EEG Assessment of Serotonergic Psychedelics NCT06624137 | Yale University | — |
| Recruiting | Open-Label Psilocybin Study in Transdiagnostic Population NCT06442423 | Yale University | Phase 1 |
| Active Not Recruiting | Testing a Transdiagnostic TMS Treatment Target NCT06282146 | Brigham and Women's Hospital | EARLY_Phase 1 |
| Recruiting | Neuromodulation for a Novel OCD Biomarker and Treatment NCT05994053 | Boston University Charles River Campus | N/A |
| Recruiting | Behavioural Development, Long-term Outcomes and Opportunities to Optimize Youth Mental Health Trajectories NCT06978452 | Douglas Mental Health University Institute | — |
| Recruiting | Discovering Factors in the Clinical Study Journey of Patients With OCD NCT05881356 | Power Life Sciences Inc. | — |
| Recruiting | Personalized DBS for OCD Guided by Stereoencephalography Mapping NCT06347978 | Andrew Moses Lee, MD, PhD | N/A |
| Recruiting | Multi-session, Personalized Cognitive Bias Modification for Thought-Action-Fusion NCT06731426 | Han Joo Lee | N/A |
| Recruiting | Objective Characterizatoion of Repetitive Behaviors NCT06050369 | Institut National de la Santé Et de la Recherche Médicale, France | N/A |
| Unknown | pBFS Guided High-dose rTMS Therapy for Treatment-Resistant Obsessive-Compulsive Disorder NCT05964062 | Changping Laboratory | N/A |
| Unknown | pBFS Guided rTMS Therapy for Treatment-resistant Obsessive-Compulsive Disorder NCT05964049 | Changping Laboratory | N/A |
| Recruiting | Cerebral and Cognitive Markers of Treatment Resistance in Obsessive Compulsive Disorder NCT05843604 | Centre Hospitalier Henri Laborit | — |
| Completed | Does TMS Affect Neuroplasticity? The Role of Brain-derived Neurotrophic Factor and Neuronal Cell Adhesion Mole NCT06231095 | Wroclaw Medical University | Phase 4 |
| Active Not Recruiting | A Clinical Trial of Tolcapone in Obsessive Compulsive Disorder NCT05624528 | University of Chicago | Phase 2 |
| Unknown | Effect of Pyridoxine as Add-on Therapy in OCD Patients NCT06244121 | Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh | N/A |
| Unknown | Psychiatric Orders in Psychoanalytic Treatment of ASD NCT05930912 | Yang I. Pachankis, PhD | — |
| Recruiting | Neurostimulation Versus Therapy for Problems With Emotions NCT05712057 | Duke University | N/A |
| Recruiting | Paired tVNS With ERP in OCD NCT05580614 | University of Florida | N/A |
| Recruiting | How Hormones and Exposure and Response Prevention (EX/RP) Affect the Brain of People With OCD NCT05359562 | University of Pennsylvania | N/A |
| Recruiting | Accelerated TMS for Depression and OCD NCT04982757 | Weill Medical College of Cornell University | N/A |
| Withdrawn | Role of Basal Ganglia and Thalamus in Perceptual Consciousness and Metacognition NCT04461730 | University Hospital, Grenoble | — |
| Completed | Therapist Guided, Parent-led, Cognitive Behavioural Therapy (CBT) for Preadolescent Children With Obsessive Co NCT05981690 | University of Reading | N/A |
| Withdrawn | Individual Versus Group Exposure With Response Prevention (ERP) for the Treatment of Obsessive Compulsive Diso NCT03926546 | Baylor College of Medicine | N/A |
| Unknown | Effect of N-acetylcysteine as Add on Therapy With SSRI in Moderate to Severe OCD Patients NCT04904952 | Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh | N/A |
| Withdrawn | DELPhI Evaluation of Psychiatric Conditions NCT03842345 | QuantalX Neuroscience | — |
| Unknown | Sertraline Combined With Fluvoxamine in the Treatment of Refractory Obsessive-compulsive Disorder NCT04963257 | Second Affiliated Hospital, School of Medicine, Zhejiang University | Phase 4 |
| Completed | Arbitration Between Habitual and Goal-directed Behavior in Obsessive-compulsive Disorder: Circuit Dynamics and NCT04075890 | University of California, Los Angeles | N/A |
| Unknown | Neurofeedback for Treatment-resistant Obsessive-compulsive Disorder (OCD) NCT03956771 | Pedro Morgado | N/A |
| Completed | Rapid Non-Invasive Brain Stimulation for OCD (oTMS) NCT03404609 | Stanford University | N/A |
| Unknown | Personalized Inhibitory Control Training for Compulsive Behavior Change NCT03682913 | Hebrew University of Jerusalem | N/A |
| Unknown | Improving Access to Child Anxiety Treatment NCT03528109 | Bradley Hospital | N/A |
| Active Not Recruiting | Measuring Automated Behavioral Observations & Vocal Expressions (ABOVE) NCT03459456 | Baylor College of Medicine | — |
| Unknown | Effect of Vitamin C Upon SSRI-treated OCD Patients NCT03754647 | Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh | N/A |
| Active Not Recruiting | Open/Aftercare Treatment for Participants Diagnosed With Obsessive Compulsive Disorder NCT03511534 | Stanford University | N/A |
| Unknown | Evaluation of Capsulotomy by Linear Accelerator Radiosurgery in Severe and Refractory Obsessive-compulsive Dis NCT02500888 | Hospital de Clinicas de Porto Alegre | N/A |
| Completed | Development of an Instrument That Monitors Behaviors Associated With OCD NCT02866422 | University of Minnesota | — |
| Completed | Effects of Sertraline on Brain Connectivity in Adolescents With OCD NCT02797808 | University of Minnesota | Phase 1 / Phase 2 |
| Unknown | Differences in Cognitive Performance and Brain Activity Between Patients With PTSD and OCD NCT01723033 | Beersheva Mental Health Center | — |
| Completed | Modeling Between Plasma Concentration and Serotonin Transporter Occupancy Induced by Escitalopram in Obsessive NCT01936051 | Seoul National University Hospital | — |
| Completed | Randomized Controlled Meditation Trial for Treating OCD NCT01833442 | University of Sao Paulo | N/A |
| Unknown | The Imaging Genetic Study of the Core Family of Obsessive-compulsive Disorder (OCD) Patient NCT01298622 | Kunming Medical University | — |
| Unknown | Tolerability And Efficacy Of High Dose Escitalopram In The Treatment Of Patients Suffering From Schizophrenia NCT00708396 | BeerYaakov Mental Health Center | Phase 4 |
| Completed | Riluzole Augmentation in Treatment-refractory Obsessive-compulsive Disorder NCT00523718 | Yale University | Phase 2 |
| Completed | Pilot Study to Evaluate Escitalopram in Obsessive-compulsive Disorder NCT00215137 | Duke University | Phase 2 |
| Withdrawn | Treatment With Duloxetine for OCD Patients NCT00399022 | Sheba Medical Center | N/A |