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Amyotrophic Lateral Sclerosis clinical trials in Seattle, WA

7 studies for Amyotrophic Lateral Sclerosis are looking for participants at sites in and around Seattle (within about 30 miles). Open a study to see who can join and how to contact the study team.

Recruiting for a study here? Feature it at the top of this page — $99 for 30 days →

Pridopidine Phase 3 Study to Evaluate Efficacy and Safety in ALS

RecruitingPhase 3
  • Swedish Medical Center, Seattle
  • University of Washington, Seattle
Ages 18 to 80 · All sexes · Updated Sep 22, 2026 · NCT07322003

RE104 Safety and Efficacy Study in Adjustment Disorder in Cancer and Other Medical Illnesses

RecruitingPhase 2
  • Seattle Neuropsychiatric Treatment Center, Seattle
Ages 18 to 80 · All sexes · Updated Sep 15, 2026 · NCT07002034

Usnoflast Neuromuscular Investigation for Treatment Efficacy in Amyotrophic Lateral Sclerosis

RecruitingPhase 2
  • Zydus US011, Seattle
Ages 18 and older · All sexes · Updated Sep 1, 2026 · NCT07023835

ASSESS ALL ALS Study

RecruitingObservational studyHealthy volunteers welcome
  • University of Washington, Seattle
Ages 18 and older · All sexes · Updated Aug 24, 2026 · NCT06578195

PREVENT ALL ALS Study

RecruitingObservational studyHealthy volunteers welcome
  • University of Washington, Seattle
Ages 18 and older · All sexes · Updated Aug 24, 2026 · NCT06581861

ARTFL LEFFTDS Longitudinal Frontotemporal Lobar Degeneration (ALLFTD)

RecruitingObservational studyHealthy volunteers welcome
  • University of Washington, Seattle
Ages 18 and older · All sexes · Updated Jul 30, 2026 · NCT04363684

Target ALS Biomarker Study; Longitudinal Biofluids, Clinical Measures, and At Home Measures

RecruitingObservational studyHealthy volunteers welcome
  • University of Washington, Seattle
Ages 18 and older · All sexes · Updated Nov 21, 2025 · NCT05137665

About Amyotrophic Lateral Sclerosis

ALS stands for Amyotrophic Lateral Sclerosis, also called Lou Gehrig's disease. ALS affects the nervous system, causing muscle problems. Find out how.

More about Amyotrophic Lateral Sclerosis on MedlinePlus

Amyotrophic Lateral Sclerosis trials in other cities

Other studies in Seattle

From ClinicalTrials.gov, data retrieved Oct 5, 2026. Each study sets its own eligibility; the study team decides who can join.