SIRNA THERAPEUTICS • siRNA therapeutics: a clinical reality – Saw PE et. al • they discovered that the silencing effectors in Caenorhabditis elegans (roundworm) were double stranded RNAs. B • This was proved by Single stranded (sense or antisense) RNA or double-stranded RNA encoding for a muscle protein was injected into C. elegans. Both single-stranded RNA had no effect when injected separately, but started to twitch when treated with double-stranded RNA, showing similar phenotypes to C. elegans with defective muscle proteins. This indication denoted that the gene coding for normal muscle movement had been silenced by the dsRNA. • Why can this be useful in therapeutics? On August 10, 2018, fda approved treatment of Hereditary Transthyretin Amyloidosis (hATTR). a rare, progressive, and fatal disease. Alnylam concluded that Patisiran is capable of significantly improving multiple clinical manifestations of hereditary transthyretin amyloidosis (Adams et al., 2018). C19324413 Ross Quigley C19368673 Naomi Ogbulafor