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OPGx-BEST1

Phase 1

ARB | Gene therapy | Rare Disease |Opus Genetics, Inc.|Last Updated: Mar 24, 2026

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment10

FDA Designations

No designations recorded

Clinical trial landscape

OPGx-BEST1 · 1 trial · 4 indications

Phase 1 1
NCT07185256Safety and Tolerability of Subretinally Injected OPGx-BEST1 in Patients With Best Vitelliform Macular Dystrophy (BVMD) or Autosomal-Recessive Bestrophinopathy (ARB)ARB
RECRUITING10 Analytics
PHASE1RECRUITING
Safety and Tolerability of Subretinally Injected OPGx-BEST1 in Patients With Best Vitelliform Macular Dystrophy (BVMD) or Autosomal-Recessive Bestrophinopathy (ARB)
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Study Endpoints

Primary Endpoints

Number of dose-limiting toxicity (DLT) events at the dose tested
5 years

Number of dose-limiting toxicity (DLT) events, defined as any ≥Grade 3 toxicity that occurs within 90 days after IMP administration based on the National Cancer Institute common toxicity criteria

Number and severity of procedure-related adverse events
5 years

Number and severity of adverse events related to the administration of OPGx-BEST1 involving pars plana vitrectomy and subretinal injection under general anesthesia

Number and severity of adverse events related to OPGx-BEST1
5 years

Number and severity of adverse events considered related to the study drug, OPGx-BEST1

Secondary Endpoints

Changes from baseline in retinal morphology assessed by spectral-domain optical coherence tomography
5 years
Changes from baseline in retinal morphology assessed by 55 degree fundus autofluorescence (FAF)
5 years
Changes from baseline in retinal morphology assessed by ultra-wide angle autofluorescence (FAF)
5 years
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
OPGx-BEST1EXPERIMENTALOPGx-BEST1, 1.5E9 vg/eye injected one time subretinally

Interventions

NameTypeDescription
OPGx-BEST1GENETICExperimental Genetic Therapy
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: Individuals who meet all the following criteria will be eligible to participate in the study: 1. Provide informed consent to study assessments. 2. Able and willing to comply with all study assessments for the duration of the study. 3. ≥18 years old. 4. ETDRS BCVA measured with ...

Countries:United States
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Frequently asked questions about OPGx-BEST1

What is OPGx-BEST1 used for?

OPGx-BEST1 is an investigational gene therapy being developed for autosomal-recessive bestrophinopathy (ARB), a rare inherited retinal disease. It is also being studied in patients with Best vitelliform macular dystrophy (BVMD) and autosomal-dominant bestrophinopathy. The therapy is delivered by subretinal injection and is currently in Phase 1 clinical development.

Who is developing OPGx-BEST1?

OPGx-BEST1 is being developed by Opus Genetics, Inc., a biopharmaceutical company. The company is conducting a Phase 1 clinical trial of the therapy in the United States. Opus Genetics is focused on developing gene therapies for rare inherited retinal diseases.

What phase is OPGx-BEST1 in?

OPGx-BEST1 is in Phase 1 clinical development. It is an investigational gene therapy and has not been approved by the FDA. The ongoing Phase 1 trial is currently recruiting participants and is designed to evaluate the safety and tolerability of the therapy.

What clinical trials is OPGx-BEST1 in?

OPGx-BEST1 is being studied in a single Phase 1 clinical trial with the identifier NCT07185256. The trial is titled 'Safety and Tolerability of Subretinally Injected OPGx-BEST1 in Patients With Best Vitelliform Macular Dystrophy (BVMD) or Autosomal-Recessive Bestrophinopathy (ARB)' and is currently recruiting in the United States.

How is OPGx-BEST1 administered?

OPGx-BEST1 is administered by subretinal injection, a procedure in which the therapy is delivered directly beneath the retina. This route of administration is commonly used for gene therapies targeting retinal diseases. The ongoing Phase 1 trial is evaluating this delivery method in patients with ARB and related conditions.