While nine genes (TBX5, RBP1, NRG1, KCNQ4, PYY2, FAM19A4, SYNM, ME1, AK5) were hypermethylated and common to all asthma phenotypes, single in silico constructed networks were characteristic for the different asthma phenotypes [26]. Here, KCNQ4 is linked to asthma.