Delandistrogene moxeparvovec
Identification
- Summary
Delandistrogene moxeparvovec is a gene therapy used to treat Duchenne Muscular Dystrophy in ambulatory children with DMD gene mutation.
- Brand Names
- Elevidys
- Generic Name
- Delandistrogene moxeparvovec
- DrugBank Accession Number
- DB16802
- Background
Delandistrogene moxeparvovec is an adeno-associated virus vector-based gene therapy developed by Sarepta Therapeutics. It was granted accelerated approval by the FDA on June 22, 2023, as the first gene therapy to treat Duchenne Muscular Dystrophy (DMD).5 DMD is an X-linked genetic disorder characterized by mutations in the dystrophin gene, leading to a deficiency in functional dystrophin protein. Dystrophin is an essential protein responsible for muscle function; thus, patients with DMD experience a progressive deterioration of muscle mass and function.1 DMD tends to be more prevalent in males.2
Delandistrogene moxeparvovec comprises a non-replicating, recombinant adeno-associated virus serotype rh74 (AAVrh74) based vector containing the microdystrophin transgene under the control of a muscle-specific promoter (MHCK7) to enhance expression in cardiac and skeletal muscles. Microdystrophin is a truncated, functional form of dystrophin.1,4
- Type
- Biotech
- Groups
- Approved, Investigational
- Biologic Classification
- Gene Therapies
Other gene therapies - Synonyms
- Delandistrogene moxeparvovec
- rAAVrh74.MHCK7.micro-dystrophin
- External IDs
- RG 6356
- RG-6356
- SRP 9001
- SRP-9001
Pharmacology
- Indication
Under accelerated approval, delandistrogene moxeparvovec is indicated for the treatment of ambulatory pediatric patients four to five years old with Duchenne muscular dystrophy (DMD) with a confirmed mutation in the DMD gene.4
This indication is approved under accelerated approval based on the expression of delandistrogene moxeparvovec microdystrophin in skeletal muscle observed in patients treated with this therapy. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial(s).4
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Indication Type Indication Combined Product Details Approval Level Age Group Patient Characteristics Dose Form Treatment of Duchenne muscular dystrophy (dmd) •••••••••••• ••••••••• ••• •••• ••••••••• •••••••••• - Contraindications & Blackbox Warnings
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- Pharmacodynamics
Delandistrogene moxeparvovec delivers the shortened functional dystrophin protein in skeletal and cardiac muscles, promoting muscle function and delaying disease progression.2 In one study, treatment of male children with DMD with delandistrogene moxeparvovec was associated with robust expression of microdystrophin protein at 12 weeks of treatment, with the mean expression levels ranging from 51.7% to 95.7%.1,4
- Mechanism of action
DMD is a progressive, fatal X-linked recessive disease caused by mutations in the DMD gene that encodes dystrophin,3 an essential protein involved in muscle integrity and function. As a component of the dystrophin-glycoprotein complex (DGC), which absorbs shock and maintains muscle integrity during normal muscle contraction,2 dystrophin links the intracellular cytoskeleton network of muscle fibre cells to the sarcolemma.1,2 A lack of functional dystrophin protein results in the failure of DGC assembly, muscle inflammation and damage, impaired muscle fibre regeneration, and progressive and irreversible deterioration of muscle function and mass.1,2
Delandistrogene moxeparvovec carries a transgene encoding microdystrophin. Microdystrophin is a shortened form of dystrophin and contains selected domains of dystrophin expressed in normal muscle cells. Microdystrophin delivered by delandistrogene moxeparvovec has been demonstrated to localize to the sarcolemma.4
- Absorption
No information is available.
- Volume of distribution
There is limited information. In mice toxicology studies, vector DNA was detected in all major organs with the highest quantities detected in the liver, followed by lower levels in the heart, adrenal glands, skeletal muscle, and aorta following delandistrogene moxeparvovec administration. Low levels of delandistrogene moxeparvovec were also detected in the spinal cord, sciatic nerve and testis.4
Protein expression of microdystrophin was highest in the cardiac tissue, exceeding physiologic dystrophin expression levels in healthy mice, with lower levels in the skeletal muscle and diaphragm. In some studies, microdystrophin was also detected at low levels in the liver.4
- Protein binding
No information is available.
- Metabolism
No information is available.
- Route of elimination
No information is available.
- Half-life
No information is available.
- Clearance
No information is available.
- Adverse Effects
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- Toxicity
No information is available regarding the acute toxicity (LD50) and overdosage of delandistrogene moxeparvovec.
- Pathways
- Not Available
- Pharmacogenomic Effects/ADRs
- Not Available
Interactions
- Drug Interactions
- This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.Not Available
- Food Interactions
- No interactions found.
Products
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- Mixture Products
Name Ingredients Dosage Route Labeller Marketing Start Marketing End Region Image Elevidys Delandistrogene moxeparvovec (13300000000000 {GC}/1mL) + Isopropyl alcohol (0.75 g/1) Kit Intravenous Sarepta Therapeutics, Inc. 2023-06-22 Not applicable US Elevidys Delandistrogene moxeparvovec (13300000000000 {GC}/1mL) + Isopropyl alcohol (0.75 g/1) Kit Intravenous Sarepta Therapeutics, Inc. 2023-06-22 Not applicable US Elevidys Delandistrogene moxeparvovec (13300000000000 {GC}/1mL) + Isopropyl alcohol (0.75 g/1) Kit Intravenous Sarepta Therapeutics, Inc. 2023-06-22 Not applicable US Elevidys Delandistrogene moxeparvovec (13300000000000 {GC}/1mL) + Isopropyl alcohol (0.75 g/1) Kit Intravenous Sarepta Therapeutics, Inc. 2023-06-22 Not applicable US Elevidys Delandistrogene moxeparvovec (13300000000000 {GC}/1mL) + Isopropyl alcohol (0.75 g/1) Kit Intravenous Sarepta Therapeutics, Inc. 2023-06-22 Not applicable US
Categories
- Drug Categories
- Classification
- Not classified
- Affected organisms
- Humans and other mammals
Chemical Identifiers
- UNII
- 2P6QV2ZE52
- CAS number
- 2305040-16-6
References
- General References
- Deng J, Zhang J, Shi K, Liu Z: Drug development progress in duchenne muscular dystrophy. Front Pharmacol. 2022 Jul 22;13:950651. doi: 10.3389/fphar.2022.950651. eCollection 2022. [Article]
- Klimchak AC, Sedita LE, Rodino-Klapac LR, Mendell JR, McDonald CM, Gooch KL, Malone DC: Assessing the value of delandistrogene moxeparvovec (SRP-9001) gene therapy in patients with Duchenne muscular dystrophy in the United States. J Mark Access Health Policy. 2023 May 26;11(1):2216518. doi: 10.1080/20016689.2023.2216518. eCollection 2023. [Article]
- Wilton-Clark H, Yokota T: Antisense and Gene Therapy Options for Duchenne Muscular Dystrophy Arising from Mutations in the N-Terminal Hotspot. Genes (Basel). 2022 Jan 28;13(2):257. doi: 10.3390/genes13020257. [Article]
- FDA Approved Drug Products: ELEVIDYS (delandistrogene moxeparvovec-rokl) suspension, for intravenous infusion [Link]
- Business Wire: Sarepta Therapeutics Announces FDA Approval of ELEVIDYS, the First Gene Therapy to Treat Duchenne Muscular Dystrophy [Link]
- External Links
- 2641675
- Wikipedia
- Delandistrogene_moxeparvovec
Clinical Trials
- Clinical Trials
Phase Status Purpose Conditions Count 1 Active Not Recruiting Treatment Duchenne Muscular Dystrophy (DMD) 1
Pharmacoeconomics
- Manufacturers
- Not Available
- Packagers
- Not Available
- Dosage Forms
Form Route Strength Kit Intravenous - Prices
- Not Available
- Patents
- Not Available
Properties
- State
- Liquid
- Experimental Properties
- Not Available
Drug created at May 10, 2022 21:18 / Updated at July 23, 2023 12:09