October 19, 2021
SBT101 Demonstrated Dose-Dependent Improvement of AMN Disease Markers in Mouse Models
SBT101 Well-Tolerated in Non-Human Primates at 3-Months Post-Treatment
Data Support Continued Advancement of SBT101 in IND-Enabling Studies
PHILADELPHIA, October 19, 2021
SwanBio Therapeutics, a gene therapy company focused on developing treatments for patients with genetically defined neurological conditions, today announced new preclinical efficacy and safety data supporting the potential of the company’s lead program, SBT101, as a disease-modifying treatment for adrenomyeloneuropathy (AMN). The data will be presented in two posters, “Intrathecal delivery of an AAV encoding human ABCD1 shows dose-responsive expression and activity in a mouse model of Adrenomyeloneuropathy,” and, “Three-month preclinical safety data of AAV9-hABCD1 following intrathecal delivery in non-human primates,” during the European Society for Gene and Cell Therapy (ESGCT) Virtual Congress. The Congress is being held October 19-22, 2021.
AMN, the adult-onset degenerative spinal cord disease occurring in patients with adrenoleukodystrophy (ALD), is characterized by progressive loss of mobility, incontinence and debilitating pain. ALD is caused by mutations in the ABCD1 gene, which encodes a protein essential to the processing and breakdown of very long chain fatty acids (VLCFA). Dysfunction of this protein leads to VLCFA accumulation in tissue and the progressive axonopathy of AMN. SBT101, a novel AAV-based gene therapy, is designed to compensate for the disease-causing ABCD1 mutation, increasing ABCD1 expression and reducing VLCFA levels.
“We are excited to share the first data on SBT101, which demonstrate its potential to directly address the underlying cause of AMN by establishing ABCD1 expression in the spinal cord,” said Karen Kozarsky, Ph.D., Swan’s chief scientific officer. “AMN is a devastating disease with no approved treatments, and we are pleased to have observed improvements in markers of AMN disease as well as good tolerability in both mice and NHPs. Taken together, these findings support the continued evaluation of SBT101 as a potential disease-modifying treatment for AMN as we advance towards the clinic.”
The safety and efficacy of SBT101 were evaluated in mouse models of AMN and non-human primates (NHPs). Key findings include:
Based on these findings, SwanBio plans to continue its ongoing investigational new drug (IND) enabling studies for SBT101 to support a planned IND submission.