| Not Yet Recruiting | Design and Rationale of the COLT Study NCT07432529 | Azienda Sanitaria Locale ASL 6, Livorno | Phase 3 |
| Not Yet Recruiting | Incidence and Characteristic of CRT Persistent After Catheter Extraction in ICU Patients NCT07473284 | Masarykova Nemocnice v Usti nad Labem, Krajska Zdravotni a.s. | — |
| Not Yet Recruiting | Immunosuppressive Therapy Alone Versus Plus Oral Anticoagulation in the Treatment of VT Associated With Behcet NCT06925698 | Marmara University | Phase 3 |
| Recruiting | Structured Exercise Versus Endovascular Reconstruction in Post Thrombotic Syndrome NCT05744843 | Guy's and St Thomas' NHS Foundation Trust | N/A |
| Unknown | Long-Term Post Thrombotic Syndrome Assessment (CELEST Long Term). NCT06046807 | Laboratoires Innothera | — |
| Completed | Exercise Tolerance After Venous Recanalization for Post-thrombotic Syndrome NCT05794932 | University Hospital, Montpellier | N/A |
| Recruiting | DEFIANCE: RCT of ClotTriever System Versus Anticoagulation In Deep Vein Thrombosis NCT05701917 | Inari Medical | N/A |
| Terminated | Best Endovenous Treatment, Including STenting, Versus Non-endovenous Treatment in Chronic Proximal Deep Venous NCT05622500 | Imperial College London | N/A |
| Unknown | The MUFFIN-PTS Trial NCT03833024 | Sir Mortimer B. Davis - Jewish General Hospital | Phase 3 |
| Terminated | Tinzaparin Lead-In to Prevent the Post-Thrombotic Syndrome NCT04794569 | Sunnybrook Health Sciences Centre | Phase 4 |
| Unknown | Mechanisms of Deep Vein Thrombosis (DVT) and Vein Wall Fibrosis NCT04833764 | Khanh Nguyen | Phase 1 / Phase 2 |
| Recruiting | Statins for Venous Event Reduction in Patients With Venous Thromboembolism NCT04319627 | Ottawa Hospital Research Institute | Phase 3 |
| Completed | Post-thrombotic Syndrome After Deep Venous Thrombosis (DVT) in Patients Treated According to the NOPHO ALL2008 NCT04825548 | Aarhus University Hospital | — |
| Terminated | Compression Hosiery to Avoid Post-Thrombotic Syndrome NCT04103112 | Imperial College London | N/A |
| Withdrawn | Catheter-directed Thrombolysis Compared to Anticoagulation Alone for Acute Primary Iliofemoral Deep Venous Thr NCT04411316 | University of Toledo Health Science Campus | Phase 4 |
| Unknown | EXERT: Exercise Physiology After Thrombosis NCT05296499 | Guy's and St Thomas' NHS Foundation Trust | — |
| Unknown | Angioplasty-stenting vs Optimal Medical Treatment on Post-thrombotic Syndrome Reduction NCT04250025 | University Hospital, Grenoble | N/A |
| Active Not Recruiting | Chronic Venous Thrombosis: Relief With Adjunctive Catheter-Directed Therapy (The C-TRACT Trial) NCT03250247 | Washington University School of Medicine | N/A |
| Withdrawn | Pediatric High-Risk Deep Venous Thrombosis Lytic Outcomes Trial NCT02767232 | University of Colorado, Denver | Phase 3 |
| Unknown | Non-elastic Compression Garment Therapy Versus Control for Deep Vein Thrombosis NCT03368313 | Pró Circulação® | N/A |
| Completed | Long-term Outcome After Heparin and Edoxaban Versus Heparin Plus Vit K Antagonists for Acute DVT and PE NCT03757481 | University Hospital, Montpellier | N/A |
| Completed | Novel PET/CT and Treatment Strategies to Reduce PTS Following DVT NCT03195777 | Massachusetts General Hospital | N/A |
| Completed | Long Term Assessment of Post Thrombotic Syndrome : OPTIMEV Study ( SPOT ) NCT03054727 | Association des Médecins Vasculaires Hospitaliers | — |
| Unknown | Long-term Outcome After Edoxaban Versus Vitamin K Antagonists for Acute VTE NCT04007653 | Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | — |
| Withdrawn | Post Thrombotic Syndrome Prevention Study NCT03039517 | NYU Langone Health | N/A |
| Completed | Treatment of the Postthrombotic Syndrome With the Oblique Stent - TOPOS Study NCT02942394 | Optimed Medizinische Instrumente GmbH | — |
| Completed | Physical Activity in Children at Risk of Post-thrombotic Sequelae (PACT) NCT03075761 | University of Texas Southwestern Medical Center | N/A |
| Terminated | Prospective Evaluation of the QoL of Patients With PTS Who Receive Compression Therapy and Sulodexide NCT02512601 | Bama GeVe, S.L.U. | Phase 4 |
| Completed | Bern Venous Stent Registry NCT02433054 | University of Zurich | — |
| Completed | Treatment of Chronic Deep Vein Thrombosis (DVT) and Post-Thrombotic Syndrome (PTS) With the EkoSonic® Endovasc NCT02159521 | Boston Scientific Corporation | Phase 4 |
| Unknown | Venous Thrombectomy/Thrombolysis Outcome Registry NCT02113475 | Heart and Vascular Outcomes Research Institute | — |
| Unknown | Long Term Outcomes of Venous Thromboembolism NCT02268630 | Ostfold Hospital Trust | — |
| Completed | Treadmill Pilot Study (Invasive Pressure Measurements in PTS) NCT01846780 | Maastricht University Medical Center | — |
| Unknown | The Use of Intermittent Pneumatic Compression Device for Symptomatic Relief in Patients With Post Thrombotic S NCT01637428 | Hadassah Medical Organization | Phase 2 |
| Completed | Elastic Compression Stockings for Prevention of Post-thrombotic Syndrome NCT01578122 | Laboratoires Innothera | N/A |
| Completed | Practicability of Gliding Aids for Medical Compression Stockings NCT01432795 | University of Zurich | Phase 4 |
| Completed | Acute Venous Thrombosis: Thrombus Removal With Adjunctive Catheter-Directed Thrombolysis NCT00790335 | Washington University School of Medicine | Phase 3 |
| Completed | Pilot Study for VeinoPlus to Improve Symptoms of Postthrombotic Syndrome (PTS) NCT00858130 | University of North Carolina, Chapel Hill | N/A |
| Completed | Treatment Trial for Post-Thrombotic Syndrome NCT00633971 | University of Vermont | N/A |
| Withdrawn | The 36-month Extension to Follow up Sub Study NCT01615692 | Sir Mortimer B. Davis - Jewish General Hospital | — |