A multi-in-situational study by Indian researchers has shown that a variant of an olfactory gene (OR2AG2)is a novel candidate for Asthma. This is the first time in India a four-generation large family with high asthma prevalence has been studied for the said purpose. The gene was validated in a north Indian cohort of 141 children with asthma and 130 controls. About 80% of children with asthma carried a copy of the gene variant.
