The present invention provides compositions and methods for inhibiting
thrombosis in subjects at risk of
thrombosis, such as those with a genetic, acquired, or
environmental risk of
thrombosis. [Solution] The present invention provides RNAi agents, such as double-stranded RNAi agents, that target
kallikrein B,
plasma (Fletcher factor) 1 (KLKB1)
gene,
factor XII (Hageman factor (F12)
gene, or
kininogen 1 (KNG1)
gene, as well as methods for inhibiting the expression of the KLKB1 gene, F12 gene, and / or KNG1 gene using such RNAi agents, and methods for treating subjects with hereditary
angioedema (HAE) and / or
contact activation pathway-related disorders.