Efficacy and Safety Study of Ixoberogene Soroparvovec (Ixo-vec) in Participants With Neovascular Age-Related Macular Degeneration (ARTEMIS)

Adverum Biotechnologies

Status and phase: Enrolling; Phase 3

Conditions: Wet AMD; Neovascular Age-Related Macular Degeneration (nAMD)

Treatments: Genetic: Ixo-vec; Drug: Aflibercept

Study type: Interventional

Funder types: Industry

Identifiers

NCT06856577

ADVM-022-12

Details and patient eligibility

About

This is a multi-center, randomized, double-masked, active-comparator-controlled, Phase 3 study in a broad participant population (treatment-naïve and treatment-experienced) with neovascular (wet) age-related macular degeneration (nAMD). The study will evaluate a single intravitreal (IVT) injection of Ixo-vec compared to an active comparator. The primary endpoint of this study is the mean change in best corrected visual acuity (BCVA) of Ixo-vec compared to an active comparator measured at an average of Weeks 52 and 56.

Safety, tolerability, and efficacy will be evaluated throughout the study.

Full description

The primary objective of this study is to evaluate the non-inferiority in efficacy of a single intravitreal (IVT) injection of Ixo-vec 6 x 10^10 vector genome (vg)/eye compared to an active comparator.

Neovascular or wet age-related macular degeneration (nAMD) is a degenerative ocular disease associated with the infiltration of abnormal blood vessels in the retina from the underlying choroid layer and is a leading cause of blindness in patients over 65 years of age. The abnormal angiogenic process in nAMD is stimulated and modulated by vascular endothelial growth factor (VEGF). Treatment of nAMD requires frequent intravitreal (IVT) injections of VEGF inhibitors (anti-VEGF) administered every 4-16 weeks. Ixo-vec (also known as ADVM-022 or AAV.7m8-aflibercept) is a gene therapy product being developed for the treatment of nAMD. Ixo-vec is designed to reduce the current treatment burden which often results in undertreatment and vision loss in patients with nAMD receiving anti-VEGF therapy in clinical practice.

Safety, tolerability, and efficacy will be evaluated throughout this study. The primary endpoint of this study is the mean change in best corrected visual acuity (BCVA) of Ixo-vec compared to an active comparator measured at an average of Weeks 52 and 56 post-treatment.

Enrollment: 284 estimated patients

Sex: All

Ages: 50+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Able and willing to provide informed consent (or have a legally authorized representative who is able and willing to provide informed consent) prior to any study assessments and procedures and comply with the study requirements and visits.
2. Male or female with a diagnosis of CNV secondary to nAMD in the study eye, with nAMD disease activity at Screening Visit 1.
3. At least 50 years old at Screening Visit 1.
4. An Early Treatment Diabetic Retinopathy Study (ETDRS) BCVA letter score of 35 - 78 (approximate Snellen equivalent of 20/200 to 20/32) in the study eye at Screening Visit 1.
5. Demonstrated a meaningful anatomic response to anti-VEGF therapy during screening
6. Able to reliably use eye drops per protocol

Exclusion criteria

General Exclusion Criteria

1. History of a medical condition giving reasonable suspicion of a condition that contraindicates the use of Ixo-vec, compromises the participant's ability to comply with the planned study activities, or that might affect the interpretation of the results of the study or render the participant at high risk for treatment complications in the opinion of the Investigator. History of severe coronavirus disease (COVID-19) infection may meet this exclusion criteria if, in the opinion of the Investigator, it is likely to lead to any important complications.

2. Received any prior gene therapy.

3. Prior treatment with any non-gene therapy investigational medicinal product (IMP) or medical device in the study eye within 3 months of Screening Visit 1 or 5 half-lives of the IMP prior to dosing with Ixo-vec, whichever is longer.

4. Female participants who are pregnant or breastfeeding or who intend to become pregnant or breastfeed in the future.

5. History or evidence of any of the following cardiovascular diseases:

   1. Myocardial infarction in the 6-month period prior to Day 1.
   2. Uncontrolled hypertension defined as systolic blood pressure > 160 mmHg or diastolic blood pressure > 100 mmHg.
   3. Stroke in the 6-month period prior to Day 1.

6. History of ongoing bleeding disorders

7. Use of systemic immunosuppressive drugs within 90 days prior to Screening Visit 1.

8. Evidence of poorly controlled diabetes or glycated hemoglobin (HbA1c) ≥ 8.0% during screening

Ocular Exclusion Criteria

1. Any active ocular or periocular infection in the study eye from Screening Visit 1.

2. History or evidence of the following in the study eye:

   1. Intraocular or refractive surgery within 90 days prior to Screening Visit 1 (Day -56 to Day -49).
   2. Any previous penetrating keratoplasty or vitrectomy.
   3. Any previous panretinal photocoagulation.
   4. Any previous submacular surgery, other surgical intervention (including port delivery system) or laser treatment for age related macular degeneration.

3. Any history or evidence of retinal detachment (with or without repair) or retinal pigment epithelium rip/tear in the study eye, as determined by the Investigator during screening or at Day 1.

4. Uncontrolled ocular hypertension or glaucoma in the study eye from Screening Visit 1 to Week 1.

5. Any history of intraocular pressure (IOP) elevation related to topical steroid administration in either eye.

6. Any history of uveitis or inflammation (grade trace or above) except mild anticipated post operative inflammation that resolved in either eye.

7. Any history of treatment with complement inhibitors for geographic atrophy in the study eye.

8. Known history of ocular herpes simplex virus, varicella-zoster virus, or cytomegalovirus, including viral uveitis, retinitis, or keratitis in either eye.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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284 participants in 2 patient groups

Ixo-vec

Experimental group

Description:

Participants will receive 3 monthly loading doses of aflibercept 2 mg IVT, a single IVT injection of Ixo-vec 6 x 10\^10 vg/eye at Week 1, and sham injections every 8 weeks

Treatment:

Drug: Aflibercept

Genetic: Ixo-vec

Aflibercept

Active Comparator group

Description:

Participants will receive 3 monthly loading doses of aflibercept 2 mg IVT, a sham injection at Week 1, and aflibercept 2 mg IVT every 8 weeks.

Treatment:

Drug: Aflibercept