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7,120 recruiting studies with US sites, from the official ClinicalTrials.gov registry (refreshed Oct 26, 2026). No sign-up needed.
Most recently updated studies · page 19 of 297
- RecruitingHealthy volunteersPhase 1
Cabotegravir-Hormone PK/PD Interactions for HIV Prevention
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 19+
- RecruitingHealthy volunteersPhase 1
Investigating the Mechanisms of the Effects of Psilocybin on Visual Perception and Visual Representations in the Brain
University of California, Berkeley
- Location
- Berkeley, CA
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteersPhase 1/Phase 2
Vasopressin and Pain Perception in the Brain
University of Maryland, Baltimore
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
Autonomic Control of the Circulation and VDR
Milton S. Hershey Medical Center
- Location
- Hershey, PA
- Eligibility basics
- Ages 21–35
- RecruitingHealthy volunteersEarly Phase 1
JIT: Effect of Pain on DT in TMD
University of Minnesota
- Location
- Minneapolis, MN
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteersEarly Phase 1
Zynrelef vs Exparel: The Battle of Postoperative Pain Control After Robotic Sleeve Gastrectomy
Texas Tech University Health Sciences Center
- Location
- Lubbock, TX
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
Smart Olfaction App to Reduce Relapse
University of Houston
- Location
- Houston, TX
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
New MRI Methods Applied to Heart Failure With Preserved Ejection Fraction (HFpEF)
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Breathing for Two: Inspiratory Muscle Strength Training for Supporting Healthy Blood Pressure in Pregnancy
University of Arizona
- Location
- Tucson, AZ
- Eligibility basics
- Ages 18–55 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Imaging CRF X NOP Interactions in CUD
Rajesh Narendran
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteersPhase 1/Phase 2
Aging and Task-specific Training to Reduce Falls
University of Illinois at Chicago
- Location
- Chicago, IL
- Eligibility basics
- Ages 60–90
- RecruitingHealthy volunteersPhase 1
HPV DNA Vaccine Via Electroporation for HPV16 Positive Cervical Neoplasia
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
- Location
- Birmingham, AL + 1 other US site
- Eligibility basics
- Ages 19+ · Women only
- RecruitingHealthy volunteersEarly Phase 1
rhPSMA-73 PET-MRI Imaging for the Detection of Prostate Cancer Among Men Who Are Otherwise Candidates for Active Surveillance
Northwestern University
- Location
- Chicago, IL
- Eligibility basics
- Ages 18+ · Men only
- RecruitingHealthy volunteersPhase 1
COES: Curing Order Effects on Sealants
University of Southern California
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 5–14
- RecruitingHealthy volunteersPhase 1
BZLF1 Peptide Vaccine (OSU-2131) With QS-21 for the Prevention of Epstein-Barr Virus Related Cancer in Patients Awaiting Solid Organ Transplants
Ohio State University Comprehensive Cancer Center
- Location
- Columbus, OH
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 1/Phase 2
Sleep Disordered Breathing With Opioid Use
VA Office of Research and Development
- Location
- Detroit, MI
- Eligibility basics
- Ages 18–89
- RecruitingHealthy volunteersOvernight stay mentioned
Cardiovascular Function and Response to Stimulation Within the First Year After Spinal Cord Injury
Kessler Foundation
- Location
- West Orange, NJ
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteersEarly Phase 1
Uric Acid, Klotho and Salt Sensitivity in Young Adults Born Preterm
Wake Forest University Health Sciences
- Location
- Winston-Salem, NC
- Eligibility basics
- Ages 22–33
- RecruitingHealthy volunteersEarly Phase 1
Lorlatinib for Newly-Diagnosed High-Grade Glioma With ROS or ALK Fusion
Nationwide Children's Hospital
- Location
- Cincinnati, OH + 1 other US site
- Eligibility basics
- Ages 1–21
- RecruitingHealthy volunteersPhase 1
Comparative Evaluation of Nicotine Analogs
Ohio State University Comprehensive Cancer Center
- Location
- Columbus, OH
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteersPhase 1
Liver Adiposity Effects on Pediatric Statin
Children's Mercy Hospital Kansas City
- Location
- Kansas City, MO
- Eligibility basics
- Ages 8–21
- RecruitingHealthy volunteersPhase 1/Phase 2
Classroom Break, Cognition, and Fitness in Elementary School Children
Purdue University
- Location
- Royal Center, IN
- Eligibility basics
- Ages 8–12
- RecruitingHealthy volunteersPhase 1/Phase 2
MTOR Inhibitors in Older Adults
University of Texas Southwestern Medical Center
- Location
- Dallas, TX
- Eligibility basics
- Ages 65–80
- RecruitingHealthy volunteersEarly Phase 1
Impact of Nrf2 Activation on Macrovascular, Microvascular & Leg Function & Walking Capacity in Peripheral Artery Disease
University of Nebraska
- Location
- Omaha, NE
- Eligibility basics
- Ages 50–75
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