The Feldan Shuttle®:
Breaking the Endosomal Barrier to Reach Untapped Therapeutic Targets
The Feldan Shuttle®: Optimized for Functional, Safe, and Broad Delivery
Overcomes endosomal entrapment — a major obstacle to effective intracellular drug delivery
Enables local delivery of functional antisense oligonucleotides (ASOs) and other therapeutic cargos
Achieves rapid delivery into a wide range of cells and tissues, including the skin and lungs — two organs known for their challenging natural barriers that limit traditional delivery methods
With a robust safety profile demonstrated in preclinical studies, the Feldan Shuttle® led to the advancement of our lead candidate, FLD-103, into clinical trials
Unlocking the Full Potential of Antisense Oligonucleotides with the Feldan Shuttle®
The Power of Local Administration
Our pipeline focuses on therapies administered directly at the disease site which offer key advantages to improve therapeutic outcomes:
Increases
Treatment Efficacy
Limits
Systemic Exposure
Improves
Safety Profile
Beyond the local administration of ASO-based therapeutics, the Feldan Shuttle® platform has demonstrated potential for various therapeutic approaches where intracellular delivery is key.
How Does the Shuttle Work?

Manufacturing Insight
Both the Feldan Shuttle® peptide and the ASO are chemically synthesized through an established and readily scalable manufacturing process.
Publications
The Feldan Shuttle® has been the subject of publications in renowned journals, demonstrating its ability to efficiently deliver therapeutic cargos into cells, where they can engage their intracellular targets. This peer-reviewed work — some developed in collaboration with academic partners — reflects our scientific engagement and our platform’s broad potential.



