We found both the KIAA1109 and GATA3 signals were significantly associated with all asthma, including mild asthma (KIAA1109 [proxy rs72687036 coded allele G]: OR 1·06, 95% CI 1·04–1·08; p=3·96 × 10−7; and GATA3 [rs10905284, risk allele C]: OR 1·04, 1·02–1·06; p=2·72 × 10−5). Here, GATA3 is linked to asthma.