ARVO 2023: Nonclinical data by Adverum Biotechnologies regarding potential treatment of wet AMD

Adverum Biotechnologies Inc. shared nonclinical data at ARVO 2023 in New Orleans that staggered, bilateral administration of Ixo-vec in NHPs was well tolerated with encouraging therapeutic activity and no signals of increased inflammation. (Image Credit: kittyfly/Adobe Stock)

Adverum Biotechnologies Inc. shared new data in an oral presentation at the Association for Research in Vision and Ophthalmology (ARVO) 2023 Annual Meeting in New Orleans. This nonclinical data supports the two doses of ixoberogene soroparvovec (Ixo-vec, formerly referred to as ADVM-022) being evaluated in the Phase 2 LUNA trial and the potential for staggered, bilateral administration in the treatment of wet AMD.

“The nonclinical data presented today support the two doses we are evaluating in the ongoing LUNA trial of Ixo-vec for the treatment of wet AMD, both in terms of tolerability and aflibercept levels within the targeted therapeutic range,” Brigit Riley, PhD, chief scientific officer at Adverum Biotechnologies, said in a statement. “Additionally, we are encouraged by the results of our nonclinical study evaluating staggered, bilateral administration as approximately 10% of patients convert from single eye to bilateral disease per year, representing an important area of unmet need that warrants clinical evaluation of Ixo-vec in bilateral wet AMD.”

Data Highlights

• Staggered, bilateral administration of Ixo-vec in NHPs was well tolerated with encouraging therapeutic activity and no signals of increased inflammation.
• A no-observed-adverse-effect level (NOAEL) was identified in NHPs at the human equivalent dose of 2E11 (3 X 10^10 vg/eye dose in NHP) supporting the human 2E11 and 6E10 doses in the ongoing Phase 2 LUNA study in wet AMD.
• Both 2E11 and 6E10 human equivalent doses resulted in therapeutic aflibercept levels with mean peak levels comparable with those observed in previous NHP and in human studies utilizing higher doses of Ixo-vec.
• Administration of a single intravitreal dose of Ixo-vec in the second eye resulted in peak aflibercept levels that are within the targeted therapeutic range.
• Despite elevated systemic humoral response after first eye injection, second eye total antibodies were undetectable prior to injection of Ixo-vec dose in the second eye.

References:

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