TLR7 is known to be the most prominent TLR in eosinophils, as supported by TLR7-induced eosinophil activation in asthma (Hiraguchi et al., 2011), and activation of neutrophil upon TLR7 ligation in the eosinophilic cell line EoL-1 (Kim et al., 2018). Here, TLR7 is linked to asthma.