TSLP and asthma: None of the airway but two of the parenchymal fibroblast asthma-associated DNA methylation regions were annotated to genes with previously identified genome-wide association study genetic risk loci for asthma [20], TSLP (rs1837253) and GATA3 (rs2589561), with the SNP and the differentially methylated regions being between ~ 0.6 and 1 Mbp apart.