CTNNB1 Syndrome is an autosomal dominant condition. While one gene is mutated, the other one is healthy.
The RNA therapies would enhance the wild type β-catenin from the healthy CTNNB1 allele.
Inhibition of β-catenin degradation is currently explored by: a) Skipping exon3 that encodes the regulatory region b) Editing of β-catenin mRNA to mutate key phosphorylation residues that govern degradation c) Downregulation of proteins involved in the β-catenin destruction complex