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Eladocagene Exuparvovec

Phase 2

AADC Deficiency | Gene therapy | Rare Disease |PTC Therapeutics, Inc.|Trials Updated: Apr 24, 2026

Eladocagene Exuparvovec development status

Highest phase Phase 2
Registered trials 1 across 1 sponsor since May 2021

Eladocagene Exuparvovec target and mechanism

Molecular targetDDC
Target classExogenous Gene
ModalityGene therapy

Also known as KEBILIDI™

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment13

FDA Designations

No designations recorded

Eladocagene Exuparvovec clinical trials

Eladocagene Exuparvovec · 1 trial · 1 indication

Phase 2 1
NCT04903288A Study of SmartFlow Magnetic Resonance (MR) Compatible Ventricular Cannula for Administering Eladocagene Exuparvovec to Pediatric ParticipantsAADC Deficiency
ACTIVE NOT_RECRUITING13 Analytics
PHASE2ACTIVE NOT_RECRUITING
A Study of SmartFlow Magnetic Resonance (MR) Compatible Ventricular Cannula for Administering Eladocagene Exuparvovec to Pediatric Participants
AADC DeficiencyUnlock trial analytics

Study Endpoints

Primary Endpoints

Change From Baseline in HVA Metabolite Level at the End of the Trial Phase
Baseline (Day 1), Week 8

HVA is a main metabolite of dopamine and HVA CSF levels are recognized as a proxy for dopamine levels in the brain.

Number of Participants With Adverse Events (AEs) Associated With the Surgical Administration of Eladocagene Exuparvovec Using the SmartFlow® MR-Compatible Ventricular Cannula
Baseline (Day 1) up to Week 8

An AE is any untoward medical occurrence associated with the use of a drug in humans, whether or not it is considered related to the drug. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease in a study participant who was administered gene therapy in this study. Number of participants with AEs related to the SmartFlow MR-compatible ventricular cannula used to administer eladocagene exuparvovec to pediatric participants at the end of Trial Phase (8 weeks after administration) are reported. A summary of serious and all other non-serious adverse events regardless of causality is located in the Reported Adverse Events module."

Secondary Endpoints

Change From Baseline in Neurotransmitter Cerebrospinal Fluid (CSF) Metabolite HVA at Week 48
Baseline (Day 1), Week 48
Change From Baseline in Positron Emission Tomography (PET) Imaging of Putaminal-Specific L-6-[18F] Fluoro-3,4-Dihydroxyphenylalnine (18F-DOPA) PET Uptake at the End of the Trial Phase (Week 8) and the Extension Phase (Week 48)
Baseline (Day 1), Week 8, Week 48
Change From Baseline in Neurotransmitter CSF Metabolites 5-hydroxyindoleacetic Acid (5-HIAA), and 3-O-methyldopa (3-OMD) at Weeks 8 and 48
Baseline (Day 1), Weeks 8 and 48
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Eladocagene ExuparvovecEXPERIMENTALParticipants will receive eladocagene exuparvovec intraoperatively at 1.8×10\^11 vector genomes (vg) via SmartFlow® MR Compatible Ventricular Cannula in a single operative session. Participants will receive standard of care for their AADC deficiency during the study.

Interventions

NameTypeDescription
Eladocagene ExuparvovecGENETICFour 0.08 milliliters (mL) infusions at a dose of 0.45×10\^11 vg and a volume of 80 microliters (μl) per site to 4 sites (2 per putamen), for the total dose of 1.8×10\^11 vg and a total volume of 320 μl per participant.
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Eligibility Criteria

Age Range1 Year to 17 Years
SexALL
Healthy VolunteersNo
Study Sites6

Inclusion Criteria: * Pediatric participants must have genetically-confirmed AADC deficiency with typical clinical characteristics and decreased AADC enzyme activity in plasma. * Cranium sufficiently developed to allow placement of ClearPoint® system for stereotactic surgery. * Persistent neurologi...

Countries:United StatesIsraelTaiwan
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Frequently asked questions about Eladocagene Exuparvovec

What is Eladocagene Exuparvovec used for in AADC Deficiency?

Eladocagene Exuparvovec is an investigational gene therapy being studied for the treatment of AADC deficiency, a rare genetic disorder. It is currently in Phase 2 clinical development and has not been approved by regulatory authorities. The therapy is designed to address the underlying genetic cause of the condition.

What does Eladocagene Exuparvovec target?

Eladocagene Exuparvovec targets the DDC gene, which provides instructions for making the enzyme aromatic L-amino acid decarboxylase. By delivering a functional copy of this gene, the therapy aims to restore enzyme activity in patients with AADC deficiency. It is classified as an exogenous gene therapy.

Who is developing Eladocagene Exuparvovec?

Eladocagene Exuparvovec is being developed by PTC Therapeutics, Inc., a biopharmaceutical company. PTC Therapeutics is publicly traded on the NASDAQ under the ticker symbol PTCT. The company is conducting clinical trials to evaluate the safety and efficacy of this gene therapy for AADC deficiency.

What phase is Eladocagene Exuparvovec in?

Eladocagene Exuparvovec is currently in Phase 2 clinical development. It is an investigational therapy, meaning it has not yet received regulatory approval for commercial use. The ongoing Phase 2 study is evaluating the delivery of the therapy using a specialized cannula in pediatric participants with AADC deficiency.

What clinical trials is Eladocagene Exuparvovec in?

Eladocagene Exuparvovec is being studied in a Phase 2 clinical trial with the identifier NCT04903288. This trial is titled 'A Study of SmartFlow Magnetic Resonance (MR) Compatible Ventricular Cannula for Administering Eladocagene Exuparvovec to Pediatric Participants.' The study is active but not recruiting, with an enrollment of 13 participants.

Is Eladocagene Exuparvovec the same as any other drug?

Eladocagene Exuparvovec is also known by the brand name Upstaza in some regions, though this information is not provided in the current data. The drug is being developed under the name Eladocagene Exuparvovec by PTC Therapeutics for the treatment of AADC deficiency.