To date, FDA has approved in total 3 siRNA-based drugs since 2017. According to official sources Patisiran (Onpattro) - the first siRNA-based therapeutic approved by FDA, costs over $450,000 per patient per year. The average annual cost of the second FDA-approved siRNA-based drug Givosiran (Gilvaari) is approximately $575,000. Meanwhile the third, and last (up till now) approved siRNA drug Lumasiran (Oxlumo) costs over $490,000.