The purpose of this research study is to test if ARRY-371797 is safe and effective in treating dilated cardiomyopathy caused by a genetic mutation to the LMNA gene. This will be demonstrated by the functional capacity of patients in their 6-minute walk tests and quality of life questionnaires.
Amyloidosis (ATTR) Cardiomyopathy (CM) is a progressive, fatal disease in which amyloid deposits build up slowly, over the course of many years to cause organ damage. This study is evaluating the safety and tolerability of a new drug called AG10 administered to adult patients with symptomatic transthyretin amyloid cardiomyopathy. The participant will be randomized to the study drug or placebo and take the study drug two times per day for 28 days.