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Bocidelpar for Mitochondrial Myopathy (MOUNTAINSIDE Trial)

Phase 2
Waitlist Available
Research Sponsored by Astellas Pharma Inc
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Diagnosed with primary mitochondrial myopathy (PMM) with specific genetic abnormality and reported symptoms or physical examination findings of myopathy.
Be older than 18 years old
Must not have
Participant has known or suspected hypersensitivity to study drug, symptomatic COVID-19 infection within a certain timeframe, or specific BMI range.
Participant has a history of active malignancy or any other cancer within a certain timeframe.
Timeline
Screening 3 weeks
Treatment Varies
Follow Up through week 28 (end of study)

Summary

This trial is testing a new drug called ASP0367 to see if it can help people with a muscle disease called Primary Mitochondrial Myopathy. The drug aims to improve muscle function, making it easier for patients to walk and do other activities.

Who is the study for?
This trial is for individuals with primary mitochondrial myopathy who have been on a stable regimen of certain supplements and exercise. They must be able to perform specific physical tests, use digital apps for the study, and agree to contraception if applicable. People with recent cancers, other medical conditions that could affect test performance, or those on investigational drugs within 28 days are excluded.
What is being tested?
The trial is testing ASP0367's effectiveness in improving function compared to a placebo in two phases: Phase 2 determines an active dose by evaluating how the body processes it; Phase 3 measures functional improvement and fatigue reduction against a placebo.
What are the potential side effects?
While not explicitly listed here, potential side effects may include reactions related to drug tolerability such as gastrointestinal issues, skin reactions, muscle or joint pain based on its pharmacological class. Specific side effects will be monitored throughout the trial.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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I have been diagnosed with PMM and show symptoms or signs of muscle disease.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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I am not allergic to the study drug, don't have COVID-19 symptoms, and my weight is within the required range.
Select...
I have had cancer or another type of malignancy in the past.
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I have weakness in my face or throat muscles due to nerve or muscle disease.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~through week 28 (end of study)
This trial's timeline: 3 weeks for screening, Varies for treatment, and through week 28 (end of study) for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Change from baseline in distance walked in 6 minutes assessed in meters
Number of participants with 12-lead electrocardiogram (ECG) abnormalities and/or AEs
Number of participants with body weight change abnormalities and/or AEs
+6 more
Secondary study objectives
Change from baseline in Modified Fatigue Impact Scale (MFIS)
Change from baseline in Patient Global Impression of Severity (PGIS)
Change from baseline in quality of life in neurological disorders (Neuro-QoL) Short Form Fatigue and Lower Extremity Function (Mobility) scores
+2 more

Trial Design

3Treatment groups
Experimental Treatment
Placebo Group
Group I: Low dose ASP0367Experimental Treatment1 Intervention
Participants will receive ASP0367 once daily in the morning for 24 weeks.
Group II: High dose ASP0367Experimental Treatment1 Intervention
Participants will receive ASP0367 once daily in the morning for 24 weeks.
Group III: PlaceboPlacebo Group1 Intervention
Participants will receive placebo once daily in the morning for 24 weeks.
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Bocidelpar
2021
Completed Phase 1
~40

Research Highlights

Information in this section is not a recommendation. We encourage patients to speak with their healthcare team when evaluating any treatment decision.
Mechanism Of Action
Side Effect Profile
Prior Approvals
Other Research
Common treatments for Mitochondrial Myopathy focus on enhancing mitochondrial function and compensating for energy deficits. ASP0367, for instance, is being studied for its ability to target specific biological pathways to improve mitochondrial function. Other treatments include Coenzyme Q10, which supports the electron transport chain, and antioxidants that reduce oxidative stress. These treatments are essential as they aim to improve cellular energy production, alleviate symptoms, and enhance the quality of life for patients with Mitochondrial Myopathy.
Reversible Valproate-Induced Subacute Encephalopathy Associated With a <i>MT-ATP8</i> Variant in the Mitochondrial Genome.

Find a Location

Who is running the clinical trial?

Astellas Pharma IncLead Sponsor
695 Previous Clinical Trials
233,274 Total Patients Enrolled
Senior Medical DirectorStudy DirectorAstellas Pharma Inc
54 Previous Clinical Trials
12,882 Total Patients Enrolled

Media Library

ASP0367 (Other) Clinical Trial Eligibility Overview. Trial Name: NCT04641962 — Phase 2
Mitochondrial Myopathy Research Study Groups: Low dose ASP0367, High dose ASP0367, Placebo
Mitochondrial Myopathy Clinical Trial 2023: ASP0367 Highlights & Side Effects. Trial Name: NCT04641962 — Phase 2
ASP0367 (Other) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04641962 — Phase 2
~8 spots leftby Nov 2025