Overall, 62.9% patients (n = 153/243) were excluded from the study due to diagnosis of other forms of amyloidosis (AA [n = 25/153], mutational transthyretin [TTRm] amyloidosis [n = 26/153], wildtype transthyretin [TTRwt] amyloidosis [n = 42/153], localized amyloidosis [n = 43/153] and non-typified amyloidosis [n = 17/153]).Data were extracted for all the 90 eligible patients. The gene discussed is TTR; the disease is amyloidosis.