The TTR protein, which can misfold to cause ATTR amyloidosis, is primarily synthesised by the liver and normally circulates as a tetramer involved in transporting vitamin A and thyroxine.4,5
WAINZUA uses GalNAc ligand-conjugated antisense (LICA) technology, where the antisense oligonucleotide (ASO) is conjugated to the ligand
N-acetylgalactosamine. Due to this structure, WAINZUA is designed for targeted and enhanced uptake by hepatocytes, the primary source of systemically circulating TTR protein.2,6
Once within hepatocytes, WAINZUA selectively binds to the TTR mRNA causing the degradation of both the mutant and wild-type TTR mRNA. This prevents the synthesis of TTR protein in the liver, resulting in significant reductions in the levels of mutated and wild-type TTR protein secreted by the liver
into circulation.1,6
WAINZUA is the only TTR silencer with LICA technology enabling direct binding to hepatocytes, targeting ASGP receptors on the cell surface.1-3,6,7
The clinical benefit of WAINZUA was demonstrated in the NEURO-TTRansform Phase III clinical study.1,6