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Monoclonal Antibodies

DNTH103 for Myasthenia Gravis (MAGIC Trial)

Phase 2
Recruiting
Research Sponsored by Dianthus Therapeutics
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up baseline (day 1) to safety follow-up visit (up to week 40)

Summary

"This trial aims to test the safety, effectiveness, and dosage of DNTH103 in people with generalized myasthenia gravis."

Who is the study for?
Adults aged 18-75 with generalized myasthenia gravis (gMG), a muscle weakness condition, can join this trial. They must have an MG-ADL score of 6+, be AChR antibody positive, and fall within the MGFA Class II-Iva. Participants need to agree to contraception if applicable and should weigh between 40-120 kg.
What is being tested?
The study is testing DNTH103's safety and effectiveness for gMG patients compared to a placebo. It will look at how well the drug works, its side effects, and how it moves through the body.
What are the potential side effects?
While specific side effects are not listed here, typical concerns may include reactions at injection sites, fatigue, headache or other pain symptoms. The trial aims to assess these potential adverse events in detail.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~baseline (day 1) to safety follow-up visit (up to week 40)
This trial's timeline: 3 weeks for screening, Varies for treatment, and baseline (day 1) to safety follow-up visit (up to week 40) for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Incidence, severity, and relationship of TEAEs (including treatment discontinuation due to adverse events [AEs]) [Time Frame: Baseline (Day 1) to Safety Follow-Up Visit (up to Week 40)]
Incidence, severity, and relationship of adverse events of special interest (AESI)
Number of participants with changes from baseline in ECG parameters
+1 more
Secondary study objectives
Antidrug antibody (ADA) levels against DNTH103
Change from baseline in Myasthenia Gravis Activities of Daily Living (MG-ADL) scale score
Change from baseline in Quantitative Myasthenia Gravis (QMG) scale score
+2 more

Trial Design

3Treatment groups
Experimental Treatment
Placebo Group
Group I: DNTH103 low dose Q2WExperimental Treatment1 Intervention
Group II: DNTH103 high dose Q2WExperimental Treatment1 Intervention
Group III: PlaceboPlacebo Group1 Intervention

Find a Location

Who is running the clinical trial?

Dianthus TherapeuticsLead Sponsor
1 Previous Clinical Trials
36 Total Patients Enrolled
~34 spots leftby Dec 2025