Clinical trial NCT06817343: A Long-term Follow up Study of EXG102-031 in Patients With wAMD (Everest LTFU)
Official title: An Open-label, Long-term Follow-Up Study to Evaluate the Safety and Tolerability of Gene Therapy With EXG102-031 in Participants With Neovascular Age-related Macular Degeneration
Study type: INTERVENTIONAL
Overall status: ENROLLING_BY_INVITATION
Phase: PHASE1
Conditions: Neovascular Age-Related Macular Degeneration (nAMD)
Neovascular (Wet) Age-related Macular Degeneration (AMD)
Keywords: EXG102-031
wAMD
Lead sponsor: Exegenesis Bio
Sponsor class: INDUSTRY
First posted: 2025-02-10
Enrollment: 12
Sex: ALL
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Intervention model description: Participants from the main study, EXG102-031 (211), will rollover to this study and will be offered Aflibercept IVT PRN to control wAMD symptoms.
Primary purpose: TREATMENT

Brief summary: In neovascular (wet) age-related macular degeneration (nAMD), the macula, or the part of the eye that provides the clear, detailed central vision, is being affected by abnormal blood vessel growth and leakage. This leakage affects the vision over time and can lead to severe blurriness or blinding. EXG102-031 was made to block the extra vessel formation which would lead to less leakage affecting the vision. Before EXG102-031 can be tested for its efficacy (if it makes vision better), it must be tested to see if it is safely tolerated to confirm it can continue to be studied in more patients with nAMD. This study is designed to fulfill the long-term safety monitoring of EXG102-031. Participants that enroll in this long-term follow-up study have been treated with EXG102-031 under the main study (EXG102-031-211).

Detailed description: Age-related macular degeneration (AMD) is a major cause of blindness and visual impairment in older adults. The wet form of AMD, also called neovascular AMD (nAMD) usually causes faster vision loss than the dry form. The most common current treatments of nAMD are products that inhibit vascular endothelial growth factor (VEGF) (including ranibizumab (LUCENTIS®, Genentech) and aflibercept (EYLEA®, Regeneron) and are delivered by intravitreal injections at 4 to 16 week intervals and continued indefinitely. The Phase I, open-label, multiple-cohort, dose-escalation study designed to evaluate the safety and tolerability of EXG102-031 gene therapy in subjects with previously treated nAMD (EXG102-031-211). In the main study safety was assessed over 52 weeks after the administration of EXG102-031. This long-term follow-up study will assess safety for an additional 36 months for all participants enrolled in the main study. Participants will return to the clinic regularly for ocular assessments including assessment of whether supplemental therapy with aflibercept is needed.

Eligibility criteria: Inclusion Criteria:

* Must have been previously enrolled in the parent study (EXG102-031-211) and must have received subretinal EXG102-031 in the parent study;
* Are willing and able to sign the study written informed consent form;
* Must be willing and able to comply with all study procedures.

There are no exclusion Criteria in this study.

Primary outcomes:
measure: Evaluation of long-term safety by measuring frequency, type, and intensity of ocular and non-ocular adverse events (AEs) and serious adverse events (SAEs) through Month 36 (Year 4) post EXG102-031 administration.
timeFrame: Month 36
Secondary outcomes:
measure: Evaluation of potential efficacy by measuring change from baseline in best corrected visual acuity (BCVA) measured using the ETDRS method and average number of doses of aflibercept supplemental therapy through Month 36 (Year 4)
timeFrame: Month 36
Other outcomes:
measure: Anatomical characteristics of EXG102-031 by measuring the change from baseline in central retinal thickness as measured by SD-OCT at Month 36 (Year 4)
timeFrame: Month 36
measure: Pharmacodynamic characteristics of EXG102-031 by measuring the transgene expression in aqueous fluid at Month 36 (Year 4)
timeFrame: Month 36
Locations:
city: Reno
country: United States
facility: Sierra Eye Associates
state: Nevada
city: Erie
country: United States
facility: Erie Retina Research
state: Pennsylvania
Study officials:
References: