Agents and methods are provided for breaking down and/or assisting in the removal of clots, in embodiments chronic clots, from the vasculature. In embodiments, the agents and methods may be used in the vasculature, in particular the peripheral venous vasculature, in order to prevent clot formation and/or lyse clots in patients suffering from complications, such as thrombosis, or from conditions, such as deep vein thrombosis (DVT).
