Phase 1 · Seattle area, WA
Phase 1 clinical trials in Seattle area, WA
29 recruiting studies have a site in the Seattle area. This page includes nearby cities such as Bellevue, Kirkland, Redmond, Renton.
29 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersPhase 1/Phase 2
Phase 1/2 Study of Respiratory Syncytial Virus and Human Metapneumovirus (RSV+HMPV) Vaccine Candidate in Adults 60 Years of Age and Older
Sanofi
- Location
- Seattle, WA + 49 other US sites
- Eligibility basics
- Ages 60+
- RecruitingHealthy volunteersPhase 1/Phase 2
A Study of Investigational RSV/hMPV Combination and Investigational hMPV Vaccines in Younger and Older Adults
GlaxoSmithKline
- Location
- Seattle, WA + 2 other US sites
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersPhase 1/Phase 2
A Study on the Safety and Immune Response of a Urinary Tract Infection (UTI) Vaccine in Adults 18-64 Years of Age and Clinical Efficacy in Females 18-64 Years of Age
GlaxoSmithKline
- Location
- Seattle, WA + 5 other US sites
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteersPhase 1/Phase 2
Study of VGA039 in Healthy Volunteers and Patients With Von Willebrand Disease (VIVID)
Vega Therapeutics, Inc
- Location
- Seattle, WA + 9 other US sites
- Eligibility basics
- Ages 12–60
- RecruitingHealthy volunteersPhase 1
KABAWIL: Reducing Intersectional Stigmas
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1/Phase 2
Chemotherapy (Decitabine in Combination With FLAG-Ida) and Total-Body Irradiation Followed by Donor Stem Cell Transplant for the Treatment of Adults With Myeloid Malignancies at High Risk of Relapse
Fred Hutchinson Cancer Center
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingPhase 1/Phase 2
RESET-MG: A Study to Evaluate the Safety and Efficacy of CABA-201 in Participants With Generalized Myasthenia Gravis
Cabaletta Bio
- Location
- Seattle, WA + 16 other US sites
- Eligibility basics
- Ages 18–70
- RecruitingPhase 1
Study of KITE-363 in Participants With Autoimmune Neurologic Diseases That Did Not Respond to Usual Treatment
Kite, A Gilead Company
- Location
- Seattle, WA + 4 other US sites
- Eligibility basics
- Ages 18–75
- RecruitingPhase 1/Phase 2
A Study of Oral Nuvisertib (TP-3654) in Patients With Myelofibrosis
Sumitomo Pharma America, Inc.
- Location
- Seattle, WA + 29 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 1
A Study to Evaluate the Efficacy and Safety of Cannabidiol Oral Solution (CBD-OS [GWP42003-P, JZP926]) for the Treatment of Focal-Onset Seizures
Jazz Pharmaceuticals
- Location
- Seattle, WA + 20 other US sites
- Eligibility basics
- Ages 12–75
- RecruitingPhase 1/Phase 2
A Study of TSRA-196 in Adults With PiZZ Alpha-1 Antitrypsin Deficiency (AATD)
Tessera Therapeutics, Inc.
- Location
- Seattle, WA + 4 other US sites
- Eligibility basics
- Ages 18–70
- RecruitingPhase 1/Phase 2
Treatment of Participants With Primary or Secondary Progressive Multiple Sclerosis
Tr1X, Inc.
- Location
- Seattle, WA + 7 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingPhase 1/Phase 2
CNP-103 in Adolescent and Adult Subjects Ages 12-35 With Recently Diagnosed (Within 6 Months) Stage 3 Type 1 Diabetes (T1D)
COUR Pharmaceutical Development Company, Inc.
- Location
- Seattle, WA + 44 other US sites
- Eligibility basics
- Ages 12–35
- RecruitingPhase 1/Phase 2
A Study to Investigate the Safety, Tolerability, and Efficacy of AZD0120 in Adults With Refractory SLE
AstraZeneca
- Location
- Seattle, WA + 8 other US sites
- Eligibility basics
- Ages 18–70
- RecruitingPhase 1
OM336 in Autoimmune Cytopenias
Lakefront Biotherapeutics West LLC
- Location
- Seattle, WA + 3 other US sites
- Eligibility basics
- Ages 18–75
- RecruitingPhase 1/Phase 2
ASCEND: Safety and Tolerability of ION337 for the Treatment of Dravet Syndrome
Ionis Pharmaceuticals, Inc.
- Location
- Seattle, WA + 4 other US sites
- Eligibility basics
- Ages 2–12
- RecruitingPhase 1
A Study of VERVE-102 in Patients With Familial Hypercholesterolemia or Premature Coronary Artery Disease
Verve Therapeutics, Inc.
- Location
- Renton, WA + 9 other US sites
- Eligibility basics
- Ages 18–70
- RecruitingPhase 1/Phase 2
Study of CTO1681 for the Prevention and Treatment of CRS in Patients Receiving CAR T-Cell Therapy
CytoAgents, Inc.
- Location
- Seattle, WA + 5 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 1
An Open-label Study of AZD0120 in Adults With Multiple Sclerosis
AstraZeneca
- Location
- Seattle, WA + 4 other US sites
- Eligibility basics
- Ages 18–60
- RecruitingPhase 1/Phase 2
Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Adults With Moderate to Severe Acne
Sanofi Pasteur, a Sanofi Company
- Location
- Seattle, WA + 78 other US sites
- Eligibility basics
- Ages 18–45
- RecruitingPhase 1/Phase 2
A Study of DB-OTO, an Adeno-Associated Virus (AAV) Based Gene Therapy, in Children/Infants, Adolescents and Adults With Hearing Loss Due to Otoferlin Mutations
Regeneron Pharmaceuticals
- Location
- Seattle, WA + 8 other US sites
- Eligibility basics
- Any age listed
- RecruitingPhase 1/Phase 2
A Study of SGT-003 Gene Therapy in Duchenne Muscular Dystrophy (INSPIRE DUCHENNE)
Solid Biosciences Inc.
- Location
- Seattle, WA + 11 other US sites
- Eligibility basics
- Ages 0 mo–17 · Men only
- RecruitingPhase 1
A Study to Learn if Bimekizumab Given in Different Ways is Safe and Moves Similarly Throughout the Body Over Time in Adults
UCB Biopharma SRL
- Location
- Bellevue, WA + 29 other US sites
- Eligibility basics
- Ages 18+
- RecruitingPhase 1
A Study on the Safety and Immune Response of Investigational mRNA Seasonal Flu/COVID-19 Combination Vaccine in Adults
GlaxoSmithKline
- Location
- Seattle, WA + 11 other US sites
- Eligibility basics
- Ages 65–85
Who these studies look for
Phase 1 studies often have narrow eligibility: specific age and weight ranges, no recent participation in another study, no nicotine, and limits on medications. Some Phase 1 studies recruit patients rather than healthy volunteers, so check each listing.
Matching a page like this one never means you qualify. Each research team decides eligibility at screening.