DUBLIN – Novartis AG is making a $9.7 billion bet that the economics of an siRNA-based drug can better those of monoclonal antibodies and thus provide it with a dominant position in a major but still emerging cardiovascular drug market. The Basel, Switzerland-based pharma made an $85 per share offer for The Medicines Co., which has taken inclisiran, an siRNA-based inhibitor of proprotein convertase subtilisin/kexin type 9 (PCSK9) to the brink of an approval in reducing the risk of a cardiovascular event – heart attack or stroke – in high-risk patients with cardiovascular disease or high levels of low-density lipoprotein cholesterol (LDL-C) who are inadequately controlled on current therapies.