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ClinicalTrials.gov public records Last synced Oct 24, 2026, 10:20 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 73–96 of 157 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Letters Clear all
Not listed Phase 4 Interventional Accepts healthy volunteers

Short-term Clinical Effects of Intravitreal Aflibercept Injection 2.0mg as a Predictor of Long-term Results

NCT01657669
View directory record Official record
Conditions
Age Related Macular Degeneration
Interventions
Intravitreal Aflibercept injection
Drug
Lead sponsor
Retina Research Institute, LLC
Other
Eligibility
50 Years and older
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
3
States / cities
St Louis, Missouri • McAllen, Texas
Source: ClinicalTrials.gov public record
Updated Oct 27, 2017 · Synced Oct 24, 2026, 10:20 PM EDT
Completed No phase listed Observational

Optimizing Fall-risk Prediction in Older Adults With Cancer

NCT02912273
View directory record Official record
Conditions
Cancer
Interventions
Baseline Participant Assessment, Baseline Healthcare Provider Assessment, Follow-up Participant Assessment, Follow-up Healthcare Provider Assessment, End-of-study Participant Assessment, End-of-study Healthcare Provider Assessment
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
65 Years and older
Enrollment
227 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 14, 2020 · Synced Oct 24, 2026, 10:20 PM EDT
Not listed Not applicable Interventional

Triple-masking v Double-masking: a Trial of Scientific Publication in Public Health

NCT06067633
View directory record Official record
Conditions
Publication of Articles Submitted to the American Journal of Public Health
Interventions
Triple-Masked, Usual Procedures
Other
Lead sponsor
Queens College, The City University of New York
Other
Eligibility
Not listed
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 5, 2023 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Spaeth/Richman Contrast Sensitivity Test

NCT01300949
View directory record Official record
Conditions
Glaucoma
Interventions
Spaeth/Richman Contrast Sensitivity Test, Pelli-Robson Contrast Sensitivity Chart
Diagnostic Test
Lead sponsor
Wills Eye
Other
Eligibility
18 Years and older
Enrollment
314 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bias Reduction in Academic Recruitment

NCT05616065
View directory record Official record
Conditions
Internship and Residency, Interview, Education, Medical
Interventions
Blinding to academic performance of candidate, Usual Interview methodology
Other
Lead sponsor
Community Medical Center, Toms River, NJ
Other
Eligibility
Not listed
Enrollment
212 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Toms River, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 19, 2023 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nudging Providers to Curtail Dangerous Opioid Prescribing: A Trial to Investigate Mechanisms

NCT04628832
View directory record Official record
Conditions
Opioid Use
Interventions
PMP Use Mandate Letter, Prescribing Information Letter, Prescribing Information + PMP Use Mandate Letter
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
Not listed
Enrollment
12,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
2
States / cities
Minneapolis, Minnesota • Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 19, 2022 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Results available

Software Treatment for Actively Reducing Severity of ADHD - Follow Up

NCT02828644
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity
Interventions
EVO
Device
Lead sponsor
Akili Interactive Labs, Inc.
Industry
Eligibility
8 Years to 12 Years
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
15
States / cities
Scottsdale, Arizona • Newport Beach, California • Sacramento, California + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2019 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Results available

Behavioral Insights to Encourage Judicious Prescribing of Opioids

NCT02790476
View directory record Official record
Conditions
Substance-Related Disorders
Interventions
Letters
Other
Lead sponsor
University of Southern California
Other
Eligibility
Not listed
Enrollment
851 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 29, 2024 · Synced Oct 24, 2026, 10:20 PM EDT
Recruiting Not applicable Interventional

Tailoring an Online Platform to Promote Evidence-Based Care for Adults With Neurofibromatosis 1 and Low Health Literacy

NCT07233408
View directory record Official record
Conditions
Neurofibromatosis 1
Interventions
NF1 Educational Videos, Peer Navigator, Letters about NF1 Care
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Oct 24, 2026, 10:20 PM EDT
Withdrawn Not applicable Interventional

Computerized Cognitive Training for Patients With Epilepsy

NCT03644082
View directory record Official record
Conditions
Epilepsy
Interventions
Luminosity Trial Memory Match, Luminosity Trial Memory Matrix, Luminosity Trial Famliar Faces, Luminosity Trial Brain Shift, Luminosity Trial Star Search, Luminosity Trial Word Bubbles, Luminosity Trial Color Match, Luminosity Trial Ebb and Flow, Luminosity TrialChalk Board Challenge, Luminosiuty Follow that Frog, Luminosity Train of Thought
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 55 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced Oct 24, 2026, 10:20 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

An Investigational Study Examining the Cross-Validation of QbMobile in ADHD and Normative Populations

NCT07220330
View directory record Official record
Conditions
No History of ADHD, Attention Deficit Hyperactivity Disorder (ADHD), Healthy Volunteer
Interventions
QbMobile
Device
Lead sponsor
Qbtech AB
Industry
Eligibility
6 Years to 60 Years
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
3
States / cities
San Jose, California • Largo, Florida • Orlando, Florida
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional

A Decentralized Clinical Trial to Promote Evidence-Based Care for Underserved Patients With Neurofibromatosis 1

NCT06262113
View directory record Official record
Conditions
Neurofibromatosis 1
Interventions
Letters about NF1 Care (Content Type 1), Letters about NF1 Care (Content Type 2)
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
Not listed
Enrollment
294 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 24, 2026, 10:20 PM EDT
Not listed Not applicable Interventional

Comparing a Patient Self-Assessment Software to Treatment as Usual in Opioid Prescriber and Patient Opioid Outcomes

NCT04945525
View directory record Official record
Conditions
Opioid-use Disorder, Opioid Misuse, Opioid Use, Chronic Pain
Interventions
Care Continuity Program
Other
Lead sponsor
Sure Med Compliance
Industry
Eligibility
18 Years and older
Enrollment
1,840 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Mobile, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 30, 2021 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Improving Metoclopramide Prescribing Practices at Penn Through a Physician-targeted Intervention

NCT01126034
View directory record Official record
Conditions
Gastroesophageal Reflux Disease, Diabetic Gastroparesis
Interventions
intervention letter
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
Not listed
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 4, 2015 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional

Using Shared Decision Making to Improve Kidney Transplantation Rates

NCT06141499
View directory record Official record
Conditions
End Stage Renal Disease, Kidney Failure
Interventions
Provider educational materials, Patient letters
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
2
States / cities
New York, New York • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 10, 2025 · Synced Oct 24, 2026, 10:20 PM EDT
Withdrawn Not applicable Interventional

Effects of Cognitive and Emotional Functioning on Treatment Outcomes

NCT03050632
View directory record Official record
Conditions
Eating Disorders
Interventions
N-back, White Bear Task
Behavioral
Lead sponsor
Boston University Charles River Campus
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 10, 2019 · Synced Oct 24, 2026, 10:20 PM EDT
Terminated Not applicable Interventional Results available

Cognitive Control Training for Urgency in a Naturalistic Clinical Setting

NCT03527550
View directory record Official record
Conditions
Impulsive Behavior, Mental Disorders
Interventions
Cognitive Control Training
Other
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 20, 2021 · Synced Oct 24, 2026, 10:20 PM EDT
Active, not recruiting No phase listed Observational

Natural History of PRPF31 Mutation-Associated Retinal Dystrophy

NCT05573984
View directory record Official record
Conditions
Retinitis Pigmentosa, Eye Diseases, Hereditary, Retinal Dystrophies, Retinal Dystrophy Rod, Retinal Dystrophy Rod Progressive
Interventions
Not listed
Lead sponsor
PYC Therapeutics
Industry
Eligibility
10 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
5
States / cities
San Francisco, California • Jacksonville, Florida • Ann Arbor, Michigan + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Phase 3 Interventional Results available

18F-AV-1451 Autopsy Study

NCT02516046
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Flortaucipir F18, PET Scan
Drug · Procedure
Lead sponsor
Avid Radiopharmaceuticals
Industry
Eligibility
50 Years and older
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
30
States / cities
Phoenix, Arizona • Los Gatos, California • Newport Beach, California + 23 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2020 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Results available

Nudging Guideline-concordant Antibiotic Prescribing Using Public Commitments

NCT01767064
View directory record Official record
Conditions
Acute Respiratory Infections (ARIs)
Interventions
Posted commitment letter
Other
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 10, 2017 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Letters Promoting Colorectal Cancer Testing

NCT04548765
View directory record Official record
Conditions
Cancer Colorectal
Interventions
Letter, Loss Frame and Fear Appeals, Transparency, Default Effect and Presentation of Alternatives, Enhanced Fear Appeals and Decoy Effect
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
14,644 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 24, 2021 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Results available

Software Treatment for Actively Reducing Severity of ADHD

NCT02674633
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity
Interventions
AKL-T01, AKL-T09
Device
Lead sponsor
Akili Interactive Labs, Inc.
Industry
Eligibility
8 Years to 12 Years
Enrollment
348 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
20
States / cities
Dothan, Alabama • Scottsdale, Arizona • Newport Beach, California + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2020 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Steps to Effective Problem Solving in Group Homes

NCT02855008
View directory record Official record
Conditions
Problem Behavior
Interventions
STEPS, Food for Life
Behavioral
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
211 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 1, 2022 · Synced Oct 24, 2026, 10:20 PM EDT
Completed Phase 4 Interventional Results available

Health Systems Reach Interventions Project

NCT04199117
View directory record Official record
Conditions
Smoking, Cigarette, Smoking Cessation
Interventions
Varenicline, Combination nicotine patch and nicotine mini-lozenge treatment, Monetary incentives for initiating treatment, Automated tailored outreach, Care management, Wisconsin Tobacco Quit Line referral, Primary care provider referral, Untailored outreach, Multiple smoking cessation coaching calls
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 24, 2026, 10:20 PM EDT