Adverum Biotechnologies Announces Presentation of Preclinical Long-Term Safety Data of ADVM-022 at 2019 Angiogenesis, Exudation, and Degeneration Conference
- Data demonstrates long-term expression of ADVM-022, an intravitreally delivered gene therapy currently in phase 1 for wet AMD, does not affect retinal morphology in non-human primates
- Initial long-term preclinical safety data out to 21 months post ADVM-022 injection was presented by Dr.
David M. Brownon February 9, 2019at the Angiogenesis, Exudation, and Degeneration Conferencein Miami, FL
Data was presented by
“I am encouraged by the growing body of evidence from a wide range of non-human primate data that continues to support the durability and safety of ADVM-022 gene therapy and the potential to treat patients with wet AMD with a single intravitreal injection,” said
“We are excited to share interim data from a preclinical study which show that the normal non-human primate retinal structure is maintained 21 months after a single intravitreal injection of 2x10^12 vg of ADVM-022, as measured by optical coherent tomography. These preclinical results are very encouraging in terms of ocular safety of long-term, robust expression of the anti-VEGF molecule, aflibercept,” said
- Long-term expression of aflibercept in the retina from ADVM-022 does not affect retinal morphology as evaluated by optical coherence tomography (OCT) at 21 months post ADVM-022 injection
- Complete data set including functional endpoints (electroretinography) and ocular tissue histology to be presented at additional upcoming conferences
About the OPTIC Phase 1 Trial of ADVM-022 in Wet AMD
The multi-center, open-label, phase 1, dose-escalation trial is designed to assess the safety and tolerability of a single intravitreal (IVT) administration of ADVM-022 in patients with wet AMD who are responsive to anti-vascular endothelial growth factor (VEGF) treatment. Up to 13 retinal centers across
About ADVM-022 Gene Therapy Candidate in Wet AMD
Adverum’s gene therapy candidate, ADVM-022, utilizes a proprietary vector capsid (AAV.7m8) carrying an aflibercept coding sequence under the control of a proprietary expression cassette and is administered as a single intravitreal administration. AAV.7m8 was discovered by directed evolution and is a variant of AAV2. The vector was designed with the purpose of improved transduction efficiency to the retina when administered intravitreally. ADVM-022 is designed to provide potentially sustained therapeutic levels of aflibercept and to minimize the burden of frequent anti-VEGF injections.
Preclinical Proof of Concept for ADVM-022
- A single intravitreal injection of ADVM-022 in non-human primates (NHPs) at dose ranges of 2 x 10^11 vg/eye to 2 x 10^12 vg/eye provided stable intraocular expression of aflibercept at levels comparable with the levels measured in aflibercept recombinant protein-injected eyes approximately three to four weeks post-dose in all of the following: vitreous humor, aqueous humor, retina and choroid
- A single intravitreal injection of ADVM-022 provided robust and durable expression of aflibercept, sustained for approximately two years post-dose in NHPs
- In a laser-induced choroidal neovascularization model in NHPs, the industry standard for testing new wet AMD therapies, a single intravitreal injection of ADVM-022 13 months before lasering prevented the occurrence of clinically relevant choroidal neovascularization lesions, similar to animals that received a bolus of intravitreal aflibercept, a current standard of care, at the time of lesioning
About Wet Age-related Macular Degeneration
Age-related macular degeneration (AMD) is a progressive disease affecting the retinal cells in the macula, the region of the eye responsible for central vision. Disease progression results in the death of retinal cells and the gradual loss of vision. Approximately 10% of patients living with AMD have an advance form of the disease called wet AMD, in which blood vessels begin to invade the cellular space between the layers of cells in the retina. These new blood vessels are often leaky, which results in fluid and blood in the retina and causes vision loss.
Wet AMD is a leading cause of vision loss in subjects over 60 years of age. A significant number of individuals are impacted by this disease, which has a prevalence of approximately 1.2 million individuals in the U.S. The incidence of new cases of wet AMD in the U.S. is approximately 150,000 to 200,000 annually, and this number is expected to grow significantly based on the country’s aging population.
The current treatment regimen can be burdensome, as patients generally require intravitreal injections with anti-VEGF proteins every 4-12 weeks. Compliance with this regimen can be difficult for patients and their caregivers, leading to compliance deficiencies and loss of vision from under dosing of treatment.
Adverum is a clinical-stage gene therapy company targeting unmet medical needs in ocular and rare diseases. Adverum develops gene therapy product candidates designed to provide durable efficacy by inducing sustained expression of a therapeutic protein. Adverum has collaboration agreements with
Statements contained in this press release regarding events or results that may occur in the future are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements regarding Adverum’s plans for advancing ADVM-022, including plans for conducting the phase 1 trial of ADVM-022 in Wet AMD, all of which are based on certain assumptions made by Adverum on current conditions, expected future developments and other factors Adverum believes are appropriate in the circumstances. Adverum may not consummate any of these a timely manner, or at all, or otherwise carry out the intentions disclosed in its forward-looking statements, and you should not place undue reliance on these forward-looking statements. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of various risks and uncertainties, which include, without limitation, the risk that Adverum’s resources will not be sufficient for Adverum to conduct or continue planned development programs and planned clinical trials, and the risk of a delay in the enrollment of patients in Adverum’s clinical studies or in the manufacturing of products to be used in such clinical studies. Risks and uncertainties facing Adverum are described more fully in Adverum’s Form 10-Q filed with the
Investor and Media Inquiries:
Katherine BockVice President Investor Relations & Corporate Communications Adverum Biotechnologies, Inc.650-656-9347 firstname.lastname@example.org
Source: Adverum Biotechnologies, Inc.