Safety and Efficacy Trial of HG004 for Leber Congenital Amaurosis Related to Rpe65 Gene Mutations (STAR)
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: HG004.
- Who it may be relevant to
- Registry conditions: Leber Congenital Amaurosis, Inherited Retinal Diseases Caused by RPE65 Mutations. Basic parameters: 6 years — 50 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- United States, China
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
A Phase 1/2, Open-label, Multi-national, Multiple-cohort, Dose-escalation Study to Evaluate the Safety, Tolerability, and Efficacy of HG004 Gene Therapy in Subjects with RPE65-associated Leber Congenital Amaurosis Type 2 (LCA2)
Overview
The purpose of the study is to determine whether HG004 as gene therapy is safe and effective for the treatment of Leber Congenital Amaurosis caused by mutations in RPE65 gene.
Interventions
- Drug HG004
Low dose Medium dose High dose
Primary outcome measures
- Incidence of ocular and non-ocular adverse events [Time frame: 52 weeks]
Secondary outcome measures (2)
- Change from baseline in Best Corrected Visual Acuity (BCVA) of letters based on the Early Treatment Diabetic Retionpathy Study (ETDRS) chart [Time frame: 52 weeks]
- Change from baseline in visual fields of full-field stimulus threshold test in log cd.s/m2. [Time frame: 52 weeks]
Eligibility criteria
Inclusion criteria
- Male or females between 6 and 50 years of age at the time of signing the informed consent form.
- Willing to adhere to protocol as evidenced by written informed consent or parental permission and subject assent.
- Clinical confirmed diagnosis of Leber congenital amaurosis (LCA) and molecular diagnosis of LCA due to RPE65 mutations.
- Ability to perform tests of visual and retinal function.
- Visual acuity of ≤ 20/80 or visual field less than 20 degrees in the eye to be injected.
- Acceptable hematology, clinical chemistry, and urine laboratory parameters.
Exclusion criteria
- Pre-existing eye conditions that would preclude the planned surgery or interfere with interpretation of study endpoints or complications of surgery (e.g., glaucoma requiring upcoming surgery, corneal or significant lenticular opacities).
- Presence of epiretinal membrane by OCT.
- Complicating systemic diseases or clinically significant abnormal baseline laboratory values.
- Complicating systemic diseases would include those in which the disease itself, or the treatment for the disease, can alter ocular function.
- Prior ocular surgery within six months.
- Prior gene therapy or oligonucleotide therapy treatments.
- Any condition which leads the investigator to believe that the participant cannot comply with the protocol requirements or that may place the participant at an unacceptable risk for participation.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- N/A
- Model
- Single group
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
United States · 2 centers
- Research Site — Sacramento
- Research Site — Houston
China · 1 center
- Research Site — Shanghai
Identifiers
NCT: NCT05906953 · HG00402