Heterozygosity for the alpha‐1‐antitrypsin Z allele in cirrhosis is associated with more advanced disease
Benedikt Schaefer, Mattias Mandorfer, André Viveiros, Armin Finkenstedt, Peter Ferenci, Stefan Schneeberger, Herbert Tilg, Heinz Zoller – 23 March 2018 – Alpha‐1‐antitrypsin deficiency (A1ATD) due to homozygosity for the Z allele (ZZ) is an established risk factor for cirrhosis, but the liver disease risk in heterozygous Z allele carriers (MZ) is controversial. The aim of the present study was to determine the prevalence of the MZ genotype among patients with cirrhosis and the associated risk of decompensation and liver transplantation/mortality.