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Onasemnogene Abeparvovec-xioi

Phase 3

SMA | Monoclonal antibody | Other |Novartis AG|Last Updated: Jan 26, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment33
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03461289Single-Dose Gene Replacement Therapy Clinical Trial for Participants With Spinal Muscular Atrophy Type 1PHASE3 COMPLETED 33Aug 16, 2018Sep 11, 2020Jan 26, 202610 Belgium, France +2
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Study Endpoints
Primary Endpoints
Number of Participants Who Achieve Independent Sitting for at Least 10 Seconds
From Day 1 up to 18 Months of Age Visit (Up to a Maximum of Approximately 17 Months)

Independent sitting is defined by the World Health Organization Multicentre Growth Reference Study, confirmed by video recording, as a participant who sits up straight with head erect for at least 10 seconds; participant does not use arms or hands to balance body or support position.

Secondary Endpoints
Event-free Survival at 14 Months of Age
Up to 14 months of age
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Onasemnogene Abeparvovec-xioiEXPERIMENTALOnasemnogene abeparvovec-xioi is a non-replicating recombinant adeno-associated virus serotype 9 (AAV9) containing the human survival motor neuron (SMN) gene under the control of the cytomegalovirus (CMV) enhancer/chicken β-actin-hybrid promoter (CB).
Interventions
NameTypeDescription
Onasemnogene Abeparvovec-xioiBIOLOGICALOnasemnogene abeparvovec-xioi is a non-replicating recombinant adeno-associated virus serotype 9 (AAV9) containing the human survival motor neuron (SMN) gene under the control of the cytomegalovirus (CMV) enhancer/chicken β-actin-hybrid promoter (CB).
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Eligibility Criteria
Age RangeN/A — 6 Months
SexALL
Healthy VolunteersNo
Study Sites10

Inclusion Criteria: * Patients with SMA Type 1 as determined by diagnosis of SMA based on gene mutation analysis with biallelic SMN1 mutations (deletion or point mutations) and one or two copies of SMN2 \[inclusive of the known SMN2 gene modifier mutation (c.859G\>C)\] * Patients must be \< 6 month...

Countries:BelgiumFranceItalyUnited Kingdom
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