| Not Yet Recruiting | Preoperative Physical Exercise, Nutritional Support, and Psychological Intervention (Multimodal Prehabilitatio Cancer Surgery, Prehabilitation | N/A | 2026-07-01 |
| Recruiting | Neonatal Data and Biobank to Study Factors Influencing Development in Preterm Infants Born at <32 Weeks' Gesta Preterm Infant Development, Preterm Infant Health, Prematurity Complications | — | 2026-03-13 |
| Not Yet Recruiting | External Beam Radiotherapy Combined with Endorectal High-dose-rate Brachytherapy in Elderly and Frail Patients Rectal Cancer | N/A | 2025-03-30 |
| Not Yet Recruiting | Exercise Intervention in Women Diagnosed With Triple-negative Breast Cancer Receiving Oncologic Treatment Breast Cancer, Triple Negative Breast Cancer | N/A | 2024-09-01 |
| Not Yet Recruiting | DeliKet (Substudy of KetoNiFast Study ID 22-1398_1) Delirium, Ketogenic Dieting, Nutrition, Healthy | N/A | 2024-09-01 |
| Not Yet Recruiting | Vibration Training Approach in Liver Cirrhosis Liver Cirrhosis | N/A | 2024-06-01 |
| Recruiting | PrognostICate- Study:Prognostication of ICU- and Ventilator- Days Over the Next Years Until 2040 ICU Admission | — | 2024-03-01 |
| Unknown | Hybrid Interactive Avatars for Post-COVID Sufferers Post-Acute COVID-19 Syndrome | — | 2024-01-01 |
| Recruiting | KetoNiFast: Cyclic Enteral Daytime Feeding With Ketogenic Nighttime Fasting Nutrition, Muscle Loss, Inflammatory Response | N/A | 2023-09-01 |
| Unknown | Stent Therapy Versus Endoscopic Vacuum Therapy for Anastomotic Leaks After Esophagectomy Leaks, Anastomotic | — | 2021-05-01 |
| Completed | Impact of Face Masks on 6MWD in Patients With Pulmonary Hypertension Pulmonary Hypertension | N/A | 2020-11-15 |
| Recruiting | Characterization of Antibacterial Antibodies in Patients With Cystic Fibrosis Pulmonary Cystic Fibrosis, Neutralizing Antibodies | — | 2020-10-01 |
| Unknown | Clinical and Immunological Characterisation of COVID-19 in Children, Adolescents and Adults COVID-19, SARS-CoV-2 | — | 2020-04-01 |
| Unknown | Cerebrospinal Fluid Proteom in Dependence of Intranasal Breast Milk Hydrocephalus in Infants | — | 2020-02-07 |
| Unknown | 24-h-ambulatory Blood Pressure Monitoring and Pulse Wave Analysis in NAFLD Patients NAFLD; Hypertension, White-coat Hypertension, Masked Hypertension | — | 2019-10-01 |
| Unknown | Feasibility and Efficacy of a Combination of a SEMS and Vacuum Wound Treatment (VACStent) Perforation Esophagus, Esophageal Cancer, Esophageal Achalasia | N/A | 2019-09-22 |
| Unknown | Impact of Prescription Quality, Infection Control and Antimicrobial Stewardship on Gut Microbiota Domination b Patients at High Risk of Antibacterial Treatment Upon Admission | — | 2019-01-01 |
| Unknown | Assessing the Impact of Antimicrobial Exposure and Infection Control Measures on the Spread of VRE VRE Infection, Antibiotic Resistant Infection | — | 2019-01-01 |
| Unknown | Theta-Burst-Stimulation in Recurrent Stroke Recovery Stroke, Neurorehabilitation | Phase 2 | 2018-01-11 |
| Completed | App Based Study on the Symptoms of Patients With Allergic Rhinitis in the Pollen Season Allergic Rhinitis | — | 2017-04-19 |
| Completed | Clinical Implications of Azole-Resistant Aspergillosis in Hematological Malignancy Invasive Aspergillosis | — | 2017-03-01 |
| Completed | Non-interventional Study to Assess the Tolerability and the Safety Profile of SCIT Therapy With Acarovac® Haus Perennial Allergic Rhinitis | — | 2017-03-01 |
| Completed | Antibiotic Stewardship and Infection Control in Patients at High Risk of Developing Infection by Clostridium D Clostridium Difficile Infection, VRE Infection, Nosocomial Infection | — | 2016-11-01 |
| Completed | Non-interventional Study to Assess the Tolerability, the Safety Profile and the Adherence of Different Up-dosi Seasonal Allergic Rhinitis | — | 2016-10-20 |
| Completed | Growth Hormones and Cells in Human Milk Depending on Gestational Age Lactation | — | 2016-03-01 |
| Completed | Tolerability of SLIT With LAIS® Mites Allergoid Tablets Allergic Rhinitis | — | 2015-12-01 |
| Unknown | Proteomics for Identification of Hyperoxia-induced Changes in Protein Expression Hyperoxia | N/A | 2015-10-01 |
| Completed | Breastfeeding Rates at the Department of Neonatology of University Hospital Cologne Newborn | — | 2015-05-01 |
| Recruiting | German Centre for Infection Research HIV Translational Platform HIV | — | 2015-04-01 |
| Completed | Tolerability of SLIT With LAIS® 2-Tree Allergoid Tablets Allergic Rhinitis | — | 2015-01-01 |
| Unknown | Clinical Impact of Cytokine in Cardiac Surgery Coronary Disease | — | 2014-08-01 |
| Completed | Influence of Triathlon on the Electrolyte Balance Hyponatremia | — | 2014-08-01 |
| Completed | Effect of DBS on Quality of Life in Dyskinetic Cerebral Palsy Dyskinetic Cerebral Palsy Due to Perinatal Hypoxia | — | 2014-03-04 |
| Unknown | Comparison of the Quality of CPR by Professional Helpers (Emergency Physicians / Paramedics) During Flights Cardiac Arrest | N/A | 2013-12-01 |
| Unknown | Comparison of the Quality of CPR by Lay Rescuers With and Without Feedback Devices Cardiac Arrest | N/A | 2013-11-01 |
| Unknown | An Evaluation of Sequential Computed Tomography of the Chest in Management of Invasive Pulmonal Aspergillosis Invasive Aspergillosis | — | 2013-06-01 |
| Unknown | Sinus Floor Elevation Using Separately Two Different Xenografts - A Prospective Randomized Clinical Trial Posterior Maxilla Edentulous Patients With Insufficient Alveolar Bone Height | N/A | 2013-02-01 |
| Recruiting | Assessment of Transcatheter Edge-to-Edge Repair in Atrial Functional Mitral Regurgitation (ATRIAL-MR) Atrial Functional Mitral Regurgitation, Mitral Insufficiency | — | 2010-01-01 |
| Completed | Extended Resection After Positive Intraoperative Pathology in Gastric Cancer Surgery Gastric Cancer | — | 1996-05-01 |
| Recruiting | Cologne Cohort of Neutropenic Patients (CoCoNut) Hematological Malignancies, Cancer, Chemotherapy | — | 1995-01-01 |