Abstract: Provided herein are combinations of therapies that provide for the treatment, including regression, of atherosclerosis and/or improvement of cardiovascular outcomes. Generally described, this includes a first, non-PCSK9 LDL-C lowering agent (such as a statin or other non-PCSK9 LDL-C lowering therapy), combined with a second, PCSK9 inhibitor therapy (such as a PCSK9 antibody or anti-RNA). The application of both therapies, at adequately elevated levels so as to reduce the LDL-C level of the subject to very low levels, for an adequate period of time, has been determined to provide an added benefit of further protection from atherosclerosis and improve a subject's cardiovascular outcomes.