A Safety Study of Contralateral Eye Dosing of VGR-R01 in Participants With Bietti's Crystalline Dystrophy (BCD)
A Clinical Study Evaluating Subretinal Injection of VGR-R01 in the Contralateral Eye of Participants With Bietti's Crystalline Dystrophy Who Had Received VGR-R01 Administration
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Fase 2
- Fase 1
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Yan Jiang
- Telefonnummer: 086-15802234907
- E-mail: yan.jiang@vitalgen.com
Studiesteder
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Beijing Municipality
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Beijing, Beijing Municipality, Kina
- Beijing Tongren Hospital
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Kontakt:
- Yan Jiang
- Telefonnummer: 086-15802234907
- E-mail: yan.jiang@vitalgen.com
-
-
Shanghai Municipality
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Shanghai, Shanghai Municipality, Kina
- Shanghai General Hospital (Shanghai First People's Hospital)
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Kontakt:
- Yan Jiang
- Telefonnummer: 086-15802234907
- E-mail: yan.jiang@vitalgen.com
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Key Inclusion Criteria:
- Participants received VGR-R01 administration in the VGR-R01-001 or VGR-R01-101 studies.
- Able to provide informed consent and comply with requirements of the study;
- Hand Motion ≤ BCVA ≤ 75 ETDRS letters in the second treated eye.
Key Exclusion Criteria:
- Have insufficient viable retinal photoreceptor cells based on investigator's decision;
- Have current ocular or periocular infections, or endophthalmitis;
- Have any significant ocular disease/disorder other than BCD, including age-related macular degeneration, diabetic retinopathy, optic neuropathy, significant lens opacity, glaucoma, uveitis, retinal detachment, etc;
- Have intraocular surgery history except cataract surgery in the study eye;
- Have or potentially require of systemic medications that may cause eye injure;
- Have contraindications for corticosteroids or immunosuppressant;
- Abnormal coagulation function or other clinically significant abnormal laboratory results;
- Have malignancies or history of malignancies;
- History of immunodeficiency (acquired or congenital); Other protocol defined Inclusion/Exclusion criteria may apply.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: VGR-R01 group
Single-dose Subretinal Administration of VGR-R01
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CYP4v2-coding gene delivered by AAV vector
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Incidence of adverse events and serious adverse events
Tidsramme: Up to Year 5
|
Ocular/non-ocular adverse events are collected.
The ophthalmic examination will include Best Corrected Visual Acuity (BCVA), Intraocular Pressure (IOP), slit lamp examination, angiography and Optical Coherence Tomography (OCT), etc.
If any potential changes accompanied by clinical symptoms, or results in a change of medical intervention, the findings will be considered as clinically significant based on investigator's decision.
|
Up to Year 5
|
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Number of participants with clinically significant change from baseline in vital signs, clinically laboratory abnormalities and ophthalmic examination findings
Tidsramme: Up to Year 5
|
Vital signs (temperature, respiratory rate, pulse rate, systolic and diastolic blood pressure) will be obtained with participant in the seated position, after having sat calmly for at least 10 minutes.
Laboratory Tests will include hematology, coagulation, blood chemistry, urinalysis, serology, and pregnancy test, etc. Ophthalmic Examination will include BCVA, IOP, slit lamp examination, angiography and OCT, etc. Clinical significance of the above signs will be determined at the investigator's discretion.
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Up to Year 5
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change from baseline in BCVA
Tidsramme: Year 5
|
BCVA will be assessed with the Early Treatment of Diabetic Retinopathy Study (ETDRS) visual acuity (VA) chart..
|
Year 5
|
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Change from baseline in multi-luminance mobility test (MLMT) score
Tidsramme: Year 5
|
Subjects will navigate a standardized mobility maze under set conditions as specified times during the study.
All light-levels used for testing will be rounded to one of the following specified light levels: 0.1, 1, 4, 10, 50, 125, 250, or 400 lux.
The corresponding scores for the above light levels range from 7 to 0, in descending order.
-1 point means failing to pass the test at the 400 lux level; the lower the score, the worse the functional vision of the participant.
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Year 5
|
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Change from baseline in optical coherence tomography (OCT)
Tidsramme: Year 5
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Change from baseline in central retinal thickness (CRT) as imaged by OCT.
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Year 5
|
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Number of subjects with the presence of immunogenicity
Tidsramme: Year 5
|
Assessed as presence of systemic cell-mediated or humoral responses to capsid or transgene product.
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Year 5
|
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Number of subjects with the presence of vector shedding
Tidsramme: Year 5
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Assessed as the presence of vector in peripheral blood or collected tear.
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Year 5
|
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Fixation stability
Tidsramme: Year 5
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Number of treated eyes with changes from baseline in fixation stability with MP-3 Microperimetry.
Fixation stability is rated into three levels: stable fixation, relatively unstable fixation, and unstable fixation, with fixed standard reporting on the device settings.
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Year 5
|
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Light sensitivity
Tidsramme: Year 5
|
Changes from baseline in light sensitivity with MP-3 Microperimetry.
The MP-3 has a stimulus intensity range of 0 to 34 decibels (dB).
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Year 5
|
Andre resultatmål
Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Visual field index (VFI)
Tidsramme: Year 5
|
Assessed by Humphery static visual field testing.
The VFI is a sophisticated index that range from 0% to 100%.
It estimates the percentage of the visual field that the higher the better of visual function.
Changes from baseline in VFI will be evaluated.
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Year 5
|
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Central threshold test
Tidsramme: Year 5
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The central threshold test is a parameter in the Humphrey visual field test report, used to quantitatively assess the light sensitivity of the fovea (the area that provides the clearest central vision).
It is a numerical value expressed in decibels (dB); the higher the value, the better the foveal light sensitivity.
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Year 5
|
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Change from baseline in NEI-VFQ-25 score
Tidsramme: Year 5
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As assessed by the National Eye Institute Visual Function Questionnaire -25 (NEI-VFQ-25 questionnaire).
NEI-VFQ-25 score ranges from 0 to 100, higher scores indicate better quality of life.
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Year 5
|
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Change from baseline in CLVQOL score
Tidsramme: Year 5
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As assessed by the Chinese version of the Low Vision Quality-of-Life Questionnaire (CLVQOL questionnaire).
CLVQOL score ranges from 0 to 125; higher scores indicate better quality of life.
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Year 5
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Wenbin Wei, Beijing Tongren Hospital
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- VGR-R01-102
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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