Sir,—In a recent issue, Dubrey et al reported interesting data concerning echocardiographic and electrocardiographic features in relation to the clinical outcome in two types of systemic amyloidosis: primary (AL) and familial.1 They pointed out that despite indistinguishable echocardiographic findings, including comparable ventricular wall thickening, patients with familial amyloid polyneuropathy (FAP) had a lower incidence of heart failure and low voltage on ECG, as well as longer one year survival, compared with patients with AL amyloidosis. Based on these results, …