TSLP and asthma: Genome-wide association studies and successful phase 2/phase 3 clinical trials support the critical role of IL-33 and TSLP in human asthma (Cayrol and Girard, 2014, 2022; Corren et al., 2017; Howell et al., 2023; Menzies-Gow et al., 2021; Wechsler et al., 2021).