French Referral Centre for Cardiac Amyloidosis, GRC Amyloid Research Institute, Amyloidosis Mondor Network, all at Henri-Mondor Teaching Hospital, AP-HP, 94010 Creteil, France; Université Paris Est Creteil, Inserm, IMRB, 94010 Creteil, France; Rheumatology Department, Henri-Mondor Teaching Hospital, 94010 Creteil, France.