TheraRadar
Data updated: May 26, 2026

DEFLAZACORT

Corticosteroid Hormone Receptor Agonists
Rare Disease Approved 2024-02-09

Deflazacort is a corticosteroid used for patients with Duchenne muscular dystrophy (DMD) who are five years of age or older. It helps patients with this condition by utilizing its anti-inflammatory and immunosuppressive properties. This medication is prescribed to manage the symptoms of DMD in both pediatric and adult populations within the approved age range.

Source: FDA Label • ZYDUS LIFESCIENCES • Corticosteroid

How DEFLAZACORT Works

Deflazacort works by converting into an active metabolite known as 21-desDFZ, which targets and binds to glucocorticoid receptors. This interaction triggers anti-inflammatory and immunosuppressive effects within the body. Although the specific process by which these actions improve Duchenne muscular dystrophy is not yet fully known, the drug relies on these receptor-mediated pathways to function.

Source: FDA Label
8
Indications
--
Phase 3 Trials
2
Years on Market

Details

Status
Prescription
First Approved
2024-02-09
Routes
ORAL
Dosage Forms
SUSPENSION, TABLET

DEFLAZACORT Approval History

2025
2026
Original
New Indication
New Form
Label Update
31 FDA actions from 2024 to 2026
Apr 2026 SUPPL
Label · Labeling
Jan 2026 ORIGINAL
Update
Jan 2026 SUPPL
Label · Labeling

What DEFLAZACORT Treats

1 indications

DEFLAZACORT is approved for 1 conditions since its original approval in 2024. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Duchenne Muscular Dystrophy
Source: FDA Label

DEFLAZACORT Competitive Set

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

What's emerging in DEFLAZACORT's indications

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Phase 3 candidates targeting molecules with no FDA-approved drug, in indications DEFLAZACORT treats. First-in-class if their pivotal trials read out positive.

Drugs Similar to DEFLAZACORT

3 of 9

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

AGAMREE
VAMOROLONE
1 shared
CATALYST PHARMS
Shared indications:
Duchenne Muscular Dystrophy
AMONDYS 45
CASIMERSEN
1 shared
Sarepta Therapeutics
Shared indications:
Duchenne Muscular Dystrophy
DUVYZAT
GIVINOSTAT HYDROCHLORIDE
1 shared
ITALFARMACO SPA
Shared indications:
Duchenne Muscular Dystrophy
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Clinical Trial Registry

9 trials
Trial Sponsor ID Phase Status Title
NCT04227483 RA/2020/001 Ph 2, Ph 3 active not recruiting Deflazacort Vs. Prednisolone in Acute-stage ABPA
NCT01603407 FOR-DMD results posted U01NS061799 2010-023744-33, U01NS061799 Ph 3 completed Finding the Optimum Regimen for Duchenne Muscular Dystrophy
NCT03783923 results posted PTCEMF-GD-004 Ph 3 terminated A Study of Deflazacort (Emflaza®) in Participants With Limb-Girdle Muscular Dystrophy 2I (LGMD2I)
NCT03642145 PTCEMF PTCEMF-GD-003 Ph 3 withdrawn A Study of Deflazacort (Emflaza®) in Participants With Duchenne Muscular Dystrophy (DMD)
NCT02295748 MP-104-CL-022OLE Ph 1 completed An Open-Label, Long-Term Extension Study to Evaluate the Safety and Tolerability Deflazacort
NCT02485431 MP-104-CL-026 Ph 1 completed Food Effect and Bioavailability of Deflazacort Formulations in Healthy Volunteers
NCT02251600 MP-104-CL-005 Ph 1 completed A Pharmacokinetic Study of Oral Deflazacort in Children and Adolescent Subjects With Duchenne Muscular Dystrophy
NCT02286622 MP-104-CL-024 Ph 1 completed A Single Dose Evaluation of the Effects of Renal Impairment on Deflazacort Pharmacokinetics
NCT02286609 MP-104-CL-023 Ph 1 completed A Single Dose Evaluation of the Effects of Moderate Hepatic Impairment on Deflazacort Pharmacokinetics
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Active Pipeline

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

DEFLAZACORT FDA Label Details

Indications & Usage

DEFLAZACORT is indicated for the treatment of Duchenne Muscular Dystrophy.

Looking for the branded version?

EMFLAZA

Full clinical data, patents, trials, and competitive landscape for deflazacort.

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.