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LY3884961

Phase 1

Gaucher Disease, Type 2 | Gene therapy | Metabolic |Eli Lilly and Company|Last Updated: Apr 1, 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
CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment7
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04411654Phase 1/2 Clinical Trial of PR001 in Infants With Type 2 Gaucher Disease (PROVIDE)PHASE1 ACTIVE NOT_RECRUITING 7Jun 29, 2021May 1, 2028Apr 1, 20265 United States, United Kingdom
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Study Endpoints
Primary Endpoints
Number of Adverse Events (AEs), Serious Adverse Events (SAEs), and Adverse Events leading to discontinuation
Year 5
Immunogenicity of AAV9 and GCase in blood
Up to Year 2
Immunogenicity of AAV9 and GCase in CSF
Up to Year 1
Secondary Endpoints
Time to death
Baseline until event or study completion, up to Year 5
Time to clinical event
Baseline until event or study completion, up to Year 5
Change in cognitive function
Months 6,12 and up to Year 2
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Low DoseEXPERIMENTAL -
High DoseEXPERIMENTAL -
Interventions
NameTypeDescription
LY3884961GENETICParticipants will receive a single dose of LY3884961 administered intracisternally.
MethylprednisoloneDRUGSingle IV pulse administered as concomitant medication.
SirolimusDRUGLoading dose, followed by maintenance doses, followed by dose tapering; administered as concomitant medication.
PrednisoneDRUGAdministered orally as concomitant medication, followed by dose tapering.
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Eligibility Criteria
Age Range0 Months — 24 Months
SexALL
Healthy VolunteersNo
Study Sites5

Inclusion Criteria: * Bi-allelic GBA1 mutations consistent with a diagnosis of GD2 confirmed by the central laboratory. * Clinical diagnosis of GD2 * Parent/legal guardian is capable of providing signed informed consent; including compliance with the requirements and restrictions listed in the info...

Countries:United StatesUnited Kingdom
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT04411654primaryCompletionDate: changed
LOWMay 24, 2026NCT04411654studyFirstPostDate: changed