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We are an RNA delivery and therapeutics company. Our proprietary Bio-Courier® technology addresses the limitations of other RNA delivery technologies through the hybridization of organic materials with inorganic bioabsorbable silicon.
Our Bio-Courier portfolio includes silicon stabilized hybrid lipid nanoparticles (sshLNP) that improve the stability, safety, and transfection efficiency of RNA. We use sshLNP to develop a pipeline of RNA therapeutics for rare genetic disorders and are maximizing the potential of our technology through research partnerships.

Led by founder and leading biomaterials specialist Dr Suzanne Saffie-Siebert, SiSaf is a venture capital backed private company. Headquartered in Guildford, UK, we have fully integrated research labs and bio-analytical facilities, a scalable technology to fast-track development, and a growing patent estate with extensive freedom to operate.

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