Intergalactic Therapeutics releases positive preclinical data from IG-002 for ABCA4-related retinopathies

Intergalactic Therapeutics has released positive preclinical data from IG-002, its lead program for the treatment of ABCA4-related retinopathies. Intergalactic's non-viral gene therapy platform is designed to overcome limitations of standard adeno-associated virus (AAV) gene therapy technologies, which include vector capacity limitations and vector-related safety concerns, while widening the potential uses of non-viral gene therapies.

• In the non-human primate study, full-length human ABCA4 was encoded into Intergalactic's proprietary C3DNA (covalently closed and circular DNA) vector platform and was delivered using COMET, Intergalactic's proprietary system for electro-transfer based, non-viral delivery of DNA.
• The new data represent the first time that a single subretinal administration of a DNA payload encoding the human ABCA4 gene has been shown to safely achieve durable 6-month expression of human ABCA4 in non-human primate retinas. These data follow results from a previous Intergalactic study demonstrating 12-month durability in adult porcine retinas. IG-002 is currently in IND-enabling studies, with plans to advance into Phase 1 trials in 2024 as the company simultaneously expands into other ophthalmology indications.

In the press release, José Lora, Ph.D., Chief Scientific Officer of Intergalactic Therapeutics shared the he is encouraged by the results and is hopeful as the studies of this treatment progress. "These latest results reinforce previous findings from our porcine study but now show durable expression in non-human primates, whose maculae most closely resemble the human eye. We are highly encouraged by these findings, which contribute to the growing body of evidence supporting the safety and durability of our non-viral gene therapy platform as we advance toward the clinic. The new data show again how our non-viral, C3DNA + COMET platform facilitates electro-transfer based delivery of substantial genetic cargo to relevant cell types in the retina with persistent expression and using a single subretinal administration."

"Intergalactic's novel platform represents a potentially transformative approach for addressing blinding ophthalmological disorders and other serious diseases," said Theresa G.H. Heah, M.D., M.B.A., Chief Executive Officer of Intergalactic Therapeutics. "We look forward to advancing IG-002 into the clinic in 2024 to unlock the promise of non-viral gene therapy for patients with few or no therapeutic options."

A Unique Combination of Proprietary Technologies

Intergalactic's non-viral gene therapy platform is designed to overcome limitations of standard adeno-associated virus (AAV) gene therapy technologies, including vector capacity limitations and vector-related safety concerns, to deliver non-viral gene therapies for a wide range of diseases. C3DNA is designed to enable therapeutic delivery of large genes, while eliminating safety concerns associated with viral vectors and allowing the potential for redosing. COMET is a precise and tunable electro-transfer-based platform for local delivery of C3DNA payloads to various tissues of interest.

Ophthalmological disease is Intergalactic's priority area of focus given high unmet patient needs, the eye's amenability to local gene delivery, and the significant limitations of viral-based gene therapy approaches. The company is advancing a lead program targeting ABCA4-related retinopathies. These retinopathies, the most common inherited retinal diseases, currently have no approved treatments.

About ABCA4-Related Retinopathies

ABCA4-related retinopathies, including Stargardt disease, cone-rod dystrophy, and retinitis pigmentosa, lead to degeneration of rods and cones and cause vision loss that often starts in childhood or adolescence, ultimately leading to blindness. These diseases are associated with mutations in the ABCA4 gene, more than 900 of which have been described. There are currently no approved treatments for ABCA4-related retinopathies and, while replacement with wild-type ABCA4 protein has the potential to slow or stop disease progression, standard AAV gene therapy platforms are not appropriate for addressing these diseases due to the large size of the gene and the growing safety concerns associated with viral vectors. Intergalactic's novel platform bypasses these drawbacks and enables local non-viral gene therapy, representing a potentially transformative approach for addressing these blinding diseases.

Reference:

Intergalactic Therapeutics Announces Positive Results for Its Non-Viral Gene Therapy Platform in ABCA4 Retinopathies in Non-Human Primates. Intergalactic Therapeutics. June 27, 2023. Accessed June 27, 2023. https://www.prnewswire.com/news-releases/intergalactic-therapeutics-announces-positive-results-for-its-non-viral-gene-therapy-platform-in-abca4-retinopathies-in-non-human-primates-301863832.html