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4D-125

Phase 1

X-Linked Retinitis Pigmentosa | Monoclonal antibody | Rare Disease |4D Molecular Therapeutics, Inc.|Last Updated: Mar 21, 2025

Target and mechanism

ModalityMonoclonal antibody

Also known as 4D-125 IVT Injection, 4D-125 IVT

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment21

FDA Designations

No designations recorded

Clinical trial landscape

4D-125 · 1 trial · 1 indication

Phase 1 1
NCT045171494D-125 in Patients With X-Linked Retinitis Pigmentosa (XLRP)X-Linked Retinitis Pigmentosa
ACTIVE NOT_RECRUITING21 Analytics
PHASE1ACTIVE NOT_RECRUITING
4D-125 in Patients With X-Linked Retinitis Pigmentosa (XLRP)
X-Linked Retinitis PigmentosaUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence and severity of TEAEs and serious adverse events (SAEs), including clinically significant changes in safety parameters
24 months to 60 Months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
4D-125 Dose ExplorationEXPERIMENTALDose 1 and Dose 2 4D-125 will be administered at the assigned dose level as a single dose, IVT injection on Day 1. The contralateral eye may also be dosed with 4D-125 as a single dose, IVT injection provided the subject is eligible and provides consent.
4D-125 Dose ExpansionEXPERIMENTAL4D-125 will be administered at the assigned dose level as a single dose, IVT injection on Day 1 in both adults and pediatric participants. For adult participants only, the contralateral eye may also be dosed with 4D-125 as a single dose, IVT injection provided the subject is eligible and provides consent.
ObservationalOTHERNatural History

Interventions

NameTypeDescription
4D-125 IVT InjectionBIOLOGICAL4D-125 drug product developed for gene therapy, which comprises an AAV capsid variant (4D-R100) carrying a codon-optimized human Retinitis Pigmentosa GTPase Regulator transgene.
ObservationalOTHERNatural History
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Eligibility Criteria

Age Range12 Years to N/A
SexMALE
Healthy VolunteersNo
Study Sites8

Natural History Key Inclusion Criteria: * Male, ≥ 6 years of age at the time of informed consent * Hemizygous non-syndromic RPGR mutation confirmed by genetic testing Interventional Key Inclusion Criteria: * Male, ≥12 years of age * Hemizygous non-syndromic RPGR mutation confirmed by genetic test...

Countries:United States
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