Fig. 2From: Alpha-1 antitrypsin (AAT) augmentation therapy in individuals with the PI*MZ genotype: a pro/con debate on a working hypothesisPredicted FEV1 curves according to smoking status (a) and duration of smoking cessation (b) [48]. Figure reproduced with permission from Oelsner et al. Lancet Respir Med 2020;8:34–44, Copyright Elsevier 2020. FEV1 forced expiratory volume in 1 sBack to article page