Transthyretin amyloid cardiomyopathy (ATTR-CM) is a serious and often overlooked cause of heart failure. In this condition, TTR (transthyretin), a protein in your blood, folds incorrectly causing amyloid deposits to build up. This process is called amyloidosis. The most common place the deposits build up is in your heart muscle, causing a form of restrictive cardiomyopathy(CM). ATTR-CM causes the heart muscle to thicken and stiffen and become unable to pump blood effectively and may cause heart failure.

To learn more about this often underdiagnosed and potentially dangerous condition, please see below.