| Not Yet Recruiting | Neurobehavioral Investigations of Approach Dynamics in the Ventral Striatum NCT05422469 | Baylor College of Medicine | N/A |
| Not Yet Recruiting | OCD Summer Treatment Program for Adolescents in Iceland NCT07465354 | University of Iceland | N/A |
| Not Yet Recruiting | Helping Adults With Obsessive-Compulsive Disorder Succeed at Work NCT07124780 | New York State Psychiatric Institute | N/A |
| Active Not Recruiting | iCBT for Adolescents Obsessive-compulsive Dissorder NCT07469358 | Hospital Clinic of Barcelona | N/A |
| Not Yet Recruiting | Assessments of Obsessive-compulsive Symptoms in Patients With Substances Use Disorder NCT07395453 | Assiut University | — |
| Not Yet Recruiting | Feasibility of Modulating Cognitive Control in OCD NCT07419009 | Dartmouth-Hitchcock Medical Center | N/A |
| Recruiting | A Lifestyle Intervention to Reduce Cardiometabolic Risk Factors in Individuals With Obsessive-compulsive Disor NCT07206212 | Karolinska Institutet | N/A |
| Recruiting | Stepped Care Treatment for Anxiety Resilience NCT07228143 | Andrew Wiese | N/A |
| Not Yet Recruiting | Aerobic Exercise and Obsessive-Compulsive Disorder Symptoms NCT07103902 | Yale University | N/A |
| Recruiting | Implementing Team-Based Treatment for Pediatric Anxiety in Community Mental Health Settings NCT06934525 | Bradley Hospital | N/A |
| Not Yet Recruiting | ZeroOCD: Learn to Overcome Contamination OCD With Your Smartphone NCT07194473 | VU University of Amsterdam | N/A |
| Recruiting | Transcranial Direct Current Stimulation and Extinction in Obsessive Compulsive Disorder NCT06834217 | Yale University | N/A |
| Not Yet Recruiting | iCBT for Adult Obsessive-Compulsive Disorder NCT07081438 | Hospital Clinic of Barcelona | N/A |
| Recruiting | The Efficacy of Temporal Interference Stimulation in the Treatment of Obsessive-Compulsive Disorder NCT07113652 | Shanghai Mental Health Center | N/A |
| Not Yet Recruiting | Exploring the Efficacy of Accelerated Transcranial Direct Current Stimulation (tDCS) as Adjunct to Pharmacothe NCT07115615 | Shanghai Mental Health Center | N/A |
| Recruiting | Acceptance and Commitment Therapy for Religious OCD NCT06647589 | University of Alabama at Birmingham | N/A |
| Recruiting | Accelerated rTMS Therapeutic Approach for Refractory Obsessive-Compulsive Disorder NCT07198594 | Shanghai Pudong New Area Mental Health Center, School of Medicine, Tongji University | N/A |
| Recruiting | Comparative Effectiveness of Internet-based Versus Parent-Coached Cognitive-Behavioral Therapy For Children an NCT07024758 | Baylor College of Medicine | N/A |
| Recruiting | Gamified Combined Cognitive Bias Modification in Adults Diagnosed With OCD: Randomized Controlled Trial NCT06941155 | Dokuz Eylul University | N/A |
| Recruiting | Brief Cognitive Behaviour Therapy (CBT) for Adolescent OCD in Routine Clinical Practice NCT06983301 | University of Oxford | N/A |
| Recruiting | Neurophysiological Investigation of the Approach-avoidance Axis in OCD: Applications to Neuromodulation NCT06596447 | Baylor College of Medicine | — |
| Recruiting | Pharmacogenomics of Selective Serotonin Reuptake Inhibitor (SSRI)-Induced Behavioural Activation NCT06763081 | University of Manitoba | — |
| Enrolling By Invitation | Assess the Utility of a Speech-based Machine Learning Algorithm to Predict Treatment Response to Psychiatric I NCT06823024 | Psyrin Inc. | — |
| Completed | Epidemiological Study on the Prevalence of Mental Disorders in Slovakia NCT07129408 | Comenius University | — |
| Recruiting | RNS for Treatment-resistant Obsessive-compulsive Disorder NCT06782867 | Xuanwu Hospital, Beijing | N/A |
| Active Not Recruiting | Priming CBT With rTMS for OCD NCT06840951 | Sunnybrook Health Sciences Centre | Phase 1 |
| Enrolling By Invitation | Mental Health, Intellectual and Neurodevelopmental Disorder Detection With Artificial Intelligence Models NCT06792175 | Psyrin Inc. | — |
| Recruiting | Brain-Oscillation Synchronized Stimulation of the DMPFC NCT06942559 | Centre for Addiction and Mental Health | N/A |
| Recruiting | LHC-CIDI-5 in Hong Kong NCT06804525 | The University of Hong Kong | — |
| Not Yet Recruiting | Can Computational Measures of Task Performance Predict Psychiatric Symptoms and Changes in Symptom Severity Ac NCT06705179 | California Institute of Technology | N/A |
| Recruiting | Computer Game, Qualitative, and MEG/EEG Assessment of Serotonergic Psychedelics NCT06624137 | Yale University | — |
| Recruiting | Comparing Exposure v Imagery Rescripting in People With OCD: a SCED NCT06944366 | King's College London | N/A |
| Recruiting | DBS for Obsessive-Compulsive Disorder NCT02773082 | Northwell Health | N/A |
| Not Yet Recruiting | DBS for Treatment-resistant Obsessive-compulsive Disorder NCT06360991 | Xuanwu Hospital, Beijing | N/A |
| Recruiting | Efficacy and Mechanism of Augmentation of Cognitive Behavioral Therapy With Transcranial Alternating Current S NCT06717165 | Shanghai Mental Health Center | N/A |
| Completed | Exploring The Metacognitive Beliefs in OCD: A Randomized Controlled Trial of Metacognitive Therapy NCT07052812 | Northeast Normal University | N/A |
| Enrolling By Invitation | Preliminary Explorative Study of Magnetic Resonance-Guided Focused Ultrasound Surgery in Refractory Obsessive- NCT06816511 | National Taiwan University Hospital | N/A |
| Completed | Reducing Maximal Support in OCD: Efficacy of Stepped-Care Online CBT NCT06659094 | Shanghai Mental Health Center | N/A |
| Recruiting | Unhide® Project: A Digital Health Platform to Collect Lifestyle Data for Brain Inflammation Research NCT04806620 | Brain Inflammation Collaborative | — |
| Completed | Impact of Attention on Obsessive Thoughts Through THOUGHT NCT05944172 | Assistance Publique - Hôpitaux de Paris | — |
| Active Not Recruiting | Obsessive-Compulsive Disorder: Insight, Trauma, and Links to Schizophrenia Spectrum Disorders NCT07092826 | Matteo Tonna | — |
| Recruiting | ERP to Improve Functioning in Veterans With OCD NCT05240924 | VA Office of Research and Development | N/A |
| Active Not Recruiting | NAC for Treatment-Resistant OCD and Other Related Disorders NCT06956157 | Guangdong Provincial People's Hospital | Phase 4 |
| Completed | Impact of EsTOCma on OCD Family Members NCT06616350 | University of Valencia | N/A |
| Recruiting | Connectomic Deep Brain Stimulation for Obsessive Compulsive Disorder NCT05160129 | Icahn School of Medicine at Mount Sinai | N/A |
| Completed | Electroencephalography Predictors of Repetitive Transcranial Magnetic Stimulation in Obsessive-Compulsive Diso NCT04432246 | Shanghai Mental Health Center | N/A |
| Suspended | A Non-Interventional Pilot Study to Explore the Role of Gut Flora in Disease NCT04031469 | ProgenaBiome | — |
| Unknown | Neural Predictors and Neural Changes Associated With Cognitive Behavior Therapy for Obssesive Compulsive Disor NCT04042038 | Institut d'Investigació Biomèdica de Bellvitge | N/A |
| Completed | Psilocybin for Treatment of Obsessive Compulsive Disorder NCT03300947 | University of Arizona | Phase 1 |
| Completed | Deep Electrical Neuromodulation in Obsessive-compulsive Disorder NCT03605316 | University Hospital, Montpellier | — |
| Completed | Feasibility, Acceptability, and Preliminary Efficacy of a Mobile App (nOCD) for OCD NCT03476902 | New York State Psychiatric Institute | N/A |
| Unknown | "Concentrated Exposure Treatment" (cET) for for Obsessive Compulsive Disorder NCT02886780 | Haukeland University Hospital | N/A |
| Completed | Metacognitive Therapy for Obsessive-Compulsive Disorder NCT02867449 | University of Leipzig | N/A |
| Terminated | Cognitive Behavioral Strategies and Transcranial Magnetic Stimulation in Obsessive-Compulsive Disorder: Open L NCT02528331 | Duke University | N/A |
| Completed | The Efficacy of TBCT Compared to ERP in the Treatment of OCD Patients, by the Assessment of Magnetic Resonance NCT02656784 | Universidade Estadual do PiauÍ | N/A |
| Completed | Open Label Trial of Rapastinel (Formerly GLYX-13) in Individuals With Obsessive-Compulsive Disorder NCT02267629 | New York State Psychiatric Institute | Phase 2 |
| Unknown | Examining the Feasibility and Acceptability of Good Quality Intensive CBT for OCD and Good Quality Weekly CBT NCT02216981 | University of Bath | N/A |
| Terminated | Neuropsychological Profiles of Pediatric Obsessive Compulsive Disorder (OCD) NCT02160431 | University of Texas at Austin | N/A |
| Unknown | Influence of Pregnenolone on Exposure Therapy in Obsessive-compulsive Disorder NCT01949753 | Universitätsklinikum Hamburg-Eppendorf | Phase 2 |
| Completed | Antibiotic Treatment Trial for the PANDAS/PANS Phenotype NCT01617083 | University of South Florida | Phase 2 |
| Completed | Intensive Cognitive-Behavioral Therapy For Obsessive-Compulsive Disorder NCT01368510 | University of California, Los Angeles | N/A |
| Completed | Family Based Cognitive-Behavioral Treatment for Preschoolers With Obsessive Compulsive Disorder NCT01447966 | University of South Florida | N/A |
| Completed | Long-term Follow-up in Patients With Deep Brain Stimulation (DBS) for Obsessive Compulsive Disorder (OCD). NCT01879254 | Universitaire Ziekenhuizen KU Leuven | — |
| Completed | Evaluating the Effects of Stress in Pregnancy NCT00525226 | Emory University | — |
| Completed | Safety Study of the Drug RG1068 in Patients With Obsessive Compulsive Disorder NCT00216294 | Indiana University School of Medicine | Phase 2 |