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Changes in lung function stratified by genotype after 24 weeks of inhaled corticosteroid therapy in 25 subjects from 11 families with a history of asthma. (A) The association between the rs37973 polymorphism and change in FEV1. (B) The association between the rs37973 polymorphism and change in FEV1 (% of predicted); ∗P < .05. FEV1 = forced expiratory volume in one second.
