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Active, not recruitingPhase 2

A Phase 2 Study of YA-101 in Patients With Multiple System Atrophy

Key facts

Who runs it
Dasher Neuroscience Inc.
Where
Boston, Houston, Los Angeles, Nashville, New York, and Rochester, United StatesSee the 6 sitesAlso in 2 other countries, 3 sites
Trial code
Status
Active, not recruiting
Phase
Phase 2
People taking part
75 people, planned
Started
3 Mar 2025
Expected to end
31 Dec 2027
Type of study
Interventional, 2 groupsOne group gets a placebo (a dummy treatment), for comparison.
Treatments tested
  • YA-101
  • Placebo
Record updated
19 August 2026

Who can take part

Age
30 years and older
Sex
Women and men
Healthy volunteers
Cannot take part

The registry criteria, word for word

Show all 10 criteriaShow less

Who can take part

  • Able to understand the process of the clinical trial and give informed consent for the participation of the study
  • Diagnosis of MSA according to MDS clinical criteria (Wenning et al, 2022), including subjects with MSA of either subtype (MSA-P or MSA-C)
  • Males or non-pregnant, non-lactating females with no child-bearing potential, or agree to use 2 forms of contraception
  • Able to take oral medications
  • Able to ambulate without the assistance of another person

Who cannot take part

  • Positive urine test for drugs of abuse and/or alcohol test both at screening and Day 1
  • Medical history includes severe systemic diseases such as cardiopulmonary failure, severe liver or kidney disease, and uncontrolled diabetes; significant central nervous system disorders like stroke, encephalitis, and epilepsy and severe head trauma; peptic ulcer in one year prior to screening
  • Evidence of renal impairment or hepatic impairment
  • Positive results for active viral infections, including human immunodeficiency virus (HIV), hepatitis B, and hepatitis C
  • Subject with a Mini-Mental State Examination (MMSE) score of 24 or lower

Where in United States

Also in 2 other countries, 3 sites

  • Brigham and Women's HospitalBoston, United StatesNo longer taking part
  • Baylor College of MedicineHouston, United StatesNo longer taking part
  • UCLA HealthLos Angeles, United StatesNo longer taking part
  • Vanderbilt University Medical CenterNashville, United StatesNo longer taking part
  • Columbia University Irving Medical CenterNew York, United StatesNo longer taking part
  • Mayo ClinicRochester, United StatesNo longer taking part

About the trial

What the trial wants to find out

This is a Phase 2, double-blind, placebo-controlled, multi-center, Phase II, dose escalation study to evaluate the safety, tolerability, pharmacokinetics and efficacy of Ya-101 in subjects with multiple system atrophy.

The 2 groups in the trial

  • YA-101Treatment being tested
  • PlaceboPlacebo, for comparison

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
A Double-Blind, Placebo-Controlled, Multi-Center, Phase II, Dose Escalation Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of YA-101 in Subjects With Multiple System Atrophy
Record updated
19 August 2026