Men · Washington
Studies open only to men in Washington
These studies list male participants only in their official record. Most other studies accept everyone regardless of sex.
7 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersPhase 2
Effects of NLS-133, a Potential Non-Hormonal "On-Demand" Male Contraceptive
Next Life Sciences
- Location
- Seattle, WA
- Eligibility basics
- Ages 18–55 · Men only
- RecruitingPhase 3
Safety and Effectiveness of Giroctocogene Fitelparvovec or Fidanacogene Elaparvovec in Patients With Hemophilia A or B Respectively
Pfizer
- Location
- Seattle, WA + 12 other US sites
- Eligibility basics
- Ages 18+ · Men only
- RecruitingPhase 3
Open-Label Extension Study of Marstacimab in Hemophilia Participants With or Without Inhibitors
Pfizer
- Location
- Seattle, WA + 2 other US sites
- Eligibility basics
- Ages 1–74 · Men only
- RecruitingHealthy volunteers
Collecting and Studying Blood and Tissue Samples From Patients With Locally Recurrent or Metastatic Prostate or Bladder/Urothelial Cancer
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+ · Men only
- RecruitingHealthy volunteers
Prostate Cancer Screening for People at Genetic Risk for Aggressive Disease, PATROL Study
University of Washington
- Location
- Seattle, WA + 6 other US sites
- Eligibility basics
- Ages 40+ · Men only
- RecruitingHealthy volunteers
Optimizing Infection Prophylaxis Prior to Shoulder Surgery
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18–89 · Men only
- RecruitingHealthy volunteersPhase 4
Optimizing Pain Control in Transurethral Resection of the Prostate
Benaroya Research Institute
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+ · Men only