IFNG and asthma: In addition, robust IFN-γ and IFN-λ responses have been found clinically in children with asthma during naturally-occurring virus-induced exacerbations (Lewis et al., 2012, Miller et al., 2012), and severe adult asthmatics and neutrophilic asthmatics have recently been shown to have a dominant IFN-γ immune response in BAL (Raundhal et al., 2015, da Silva et al., 2017).