Scientists have discovered two new genes which they say have strong links to asthma.They have established the impact of one of these genes, called GPRA, though the other remains a mystery.Other asthma genes have previously been identified, but with a weaker link, Science magazine reported.The findings could lead to new drugs, but some experts warned progress towards different treatments as a result of genetics was slow.Around 10% of adults and 15% of children in the UK have asthma. Though rates have risen sharply, there is some evidence that they are now levelling off in the Western world.
