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Showing 1–24 of 185 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Retrospective observational study Clear all
Completed No phase listed Observational

Implementation of Harmonized Depression Outcome Measures in a Primary Care Registry and a Mental Health Registry

NCT04235725
View directory record Official record
Conditions
Major Depression, Dysthymia
Interventions
Harmonized Depression Outcome Measures
Other
Lead sponsor
OM1, Inc.
Industry
Eligibility
18 Years and older
Enrollment
953 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated May 17, 2021 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

A Retrospective Study of Subjects With Thymidine Kinase 2 Deficiency

NCT05017818
View directory record Official record
Conditions
Thymidine Kinase 2 Deficiency
Interventions
Observational retrospective data
Other
Lead sponsor
Zogenix MDS, Inc.
Industry
Eligibility
Not listed
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
4
States / cities
Los Angeles, California • Indianapolis, Indiana • Akron, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2023 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Real-world Impact of Erenumab on Sick-leaves, Health Care Resource Use and Comorbidities.

NCT05375097
View directory record Official record
Conditions
Migraine
Interventions
Erenumab
Other
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 30, 2022 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Delphinus SoftVue™ ROC Reader Study

NCT03972605
View directory record Official record
Conditions
Breast Cancer Detection, Dense Breast Parenchyma, Benign Breast Findings, Normal Breast Screening, Abnormal Breast Screening
Interventions
Reading of Automated Breast Ultrasound in conjunction with Screening Mammography
Device
Lead sponsor
Delphinus Medical Technologies, Inc.
Industry
Eligibility
Not listed
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 27, 2020 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational Results available

A Natural History of the Progression of Stargardt Disease: Retrospective and Prospective Studies

NCT01977846
View directory record Official record
Conditions
Stargardt Disease
Interventions
Not listed
Lead sponsor
Foundation Fighting Blindness
Other
Eligibility
6 Years and older
Enrollment
259 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
6
States / cities
Baltimore, Maryland • Cleveland, Ohio • Philadelphia, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2019 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Physiologic Signals and Signatures With the Accuryn Monitoring System (The Accuryn Registry)

NCT04585555
View directory record Official record
Conditions
Acute Kidney Injury, Abdominal Compartment Syndrome, Intraabdominal Hypertension, Cardiovascular Surgery
Interventions
Accuryn Monitoring System
Device
Lead sponsor
Potrero Medical
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 3, 2021 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Study of Patient Outcomes 5 Years After Partial Knee Replacement

NCT01620892
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
Not listed
Lead sponsor
Athens Orthopedic Clinic, P.A.
Other
Eligibility
18 Years and older
Enrollment
159 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 9, 2019 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Observational Studies in Cancer Associated Thrombosis for Rivaroxaban - United States Cohort

NCT04979780
View directory record Official record
Conditions
Treatment of Venous Thromboembolism in Cancer Patients, Prophylaxis of Recurrent Venous Thromboembolism in Cancer Patients
Interventions
Rivaroxaban (Xarelto, BAY59-7939), Low molecular weight heparin (LMWH), Direct Oral Anticoagulants (DOAC)
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older
Enrollment
3,708 participants
Timeline
2021 – 2022
U.S. locations
1
States / cities
Multiple Locations, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 30, 2024 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

A Real-world Study to Assess the Characteristics and Long-term Effectiveness of Inclisiran in Chinese Adult Patients

NCT06595069
View directory record Official record
Conditions
Hypercholesterolemia
Interventions
Not listed
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Delphinus SoftVue™ ROC Reader Study

NCT03698942
View directory record Official record
Conditions
Breast Cancer, Breast Neoplasms
Interventions
Reading of Automated Breast Ultrasound in conjunction with Screening Mammography
Device
Lead sponsor
Delphinus Medical Technologies, Inc.
Industry
Eligibility
Not listed
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 6, 2020 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

An Observational Study, Called DEAR, to Learn More About Treatment With Darolutamide, Enzalutamide and Apalutamide in Men With Non-metastatic Castration-resistant Prostate Cancer in Real World Settings

NCT05362149
View directory record Official record
Conditions
Non-metastatic Castration-resistant Prostate Cancer
Interventions
Darolutamide (Nubeqa, BAY1841788), Enzalutamide, Apalutamide
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older · Male only
Enrollment
870 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Whippany, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Sep 2, 2026, 2:30 PM EDT
Not listed No phase listed Observational

Developing Prediction Models for Allograft Failure After Liver Transplantation

NCT05289609
View directory record Official record
Conditions
Liver Transplant Disorder
Interventions
Liver Transplantation
Procedure
Lead sponsor
Fondazione Policlinico Universitario Agostino Gemelli IRCCS
Other
Eligibility
18 Years and older
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
4
States / cities
Los Angeles, California • Jacksonville, Florida • Worcester, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 20, 2022 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Natural History Study of Patients With Canavan Disease (CANinform Study)

NCT04126005
View directory record Official record
Conditions
Canavan Disease
Interventions
Not listed
Lead sponsor
Aspa Therapeutics
Industry
Eligibility
Not listed
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
2
States / cities
Oakland, California • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Pediatric Oncology Recovery Trial After Surgery

NCT04344899
View directory record Official record
Conditions
Pelvic Cancer
Interventions
Observational
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
1 Month to 18 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
3
States / cities
Aurora, Colorado • Cincinnati, Ohio • Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Retrospective Safety Study to Compare Mortality in Intensive Care Unite (ICU) Patients Undergoing Echocardiography With or Without DEFINITY®

NCT01299649
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Not listed
Lead sponsor
Lantheus Medical Imaging
Industry
Eligibility
18 Years and older
Enrollment
4,300,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
North Billerica, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 9, 2020 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

A Real-world Study to Assess the Use of Siponimod in Spain to Treat Patients With Secondary Progressive Multiple Sclerosis

NCT06588387
View directory record Official record
Conditions
Secondary Progressive Multiple Sclerosis
Interventions
Not listed
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

Evaluating Off-label Use of Direct Oral Anticoagulants (DOACs) in Hypercoagulable States

NCT04565977
View directory record Official record
Conditions
Hypercoagulable States
Interventions
Observational
Other
Lead sponsor
Methodist Health System
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Nov 19, 2024 · Synced Sep 2, 2026, 2:30 PM EDT
Completed Not applicable Interventional

Management of Postpartum Preeclampsia

NCT05775744
View directory record Official record
Conditions
Postpartum Preeclampsia
Interventions
Tight postpartum blood pressure control
Other
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older · Female only
Enrollment
392 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
2
States / cities
Livingston, New Jersey • New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 1, 2024 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

An Observational Study, Called RegoFlex EU, to Learn More About the Use of Stivarga at Reduced Doses as Recommended (Flexible Dosing) to Treat People With Metastatic Colorectal Cancer in Real World Settings in Europe

NCT05551039
View directory record Official record
Conditions
Metastatic Colorectal Cancer
Interventions
Retrospective patient chart review
Other
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Whippany, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

GRANITE: Airsupra Effectiveness in the Real World

NCT07141277
View directory record Official record
Conditions
Asthma
Interventions
None (Observational study)
Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
4,060 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Sep 2, 2026, 2:30 PM EDT
Completed Phase 4 Interventional

Oliceridine in Patients With Acute Burn Injuries

NCT05465226
View directory record Official record
Conditions
Acute Pain, Burns, Adverse Drug Event, Respiratory Depression, Nausea and Vomiting, Postoperative
Interventions
Oliceridine, Historical opioid use
Drug
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 25, 2023 · Synced Sep 2, 2026, 2:30 PM EDT
Completed No phase listed Observational

RANS. Study in Patients With Severe Eosinophilic Asthma and Nasal Polyps.

NCT05180357
View directory record Official record
Conditions
Severe Eosinophilic Asthma, Nasal Polyps
Interventions
FASENRA(benralizumab)
Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 99 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
8
States / cities
Centennial, Colorado • Denver, Colorado • Glendale, New York + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2023 · Synced Sep 2, 2026, 2:30 PM EDT
Recruiting No phase listed Observational

A Study of Treatment Patterns and Outcomes in Gastroenteropancreatic Neuroendocrine Tumor (GEP-NET) Patients

NCT07635316
View directory record Official record
Conditions
Gastroenteropancreatic Neuroendocrine Tumor
Interventions
Not listed
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 110 Years
Enrollment
4,023 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 2, 2026, 2:30 PM EDT
Recruiting No phase listed Observational

Integrating Quantitative MRI and Artificial Intelligence to Improve Prostate Cancer Classification

NCT04765150
View directory record Official record
Conditions
Prostate Carcinoma
Interventions
3 Tesla Magnetic Resonance Imaging, Electronic Health Record Review
Procedure · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
275 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 2, 2026, 2:30 PM EDT