The gene attributed to causing lung cancer in non smokers has been discovered by researchers in the U. S.

Though smoking causes 90% of lung cancer, there are also a notable number of non-smokers who are afflicted with the disease.

It is anticipated that the finding of the gene GPC5 could open doors for further research and pave the way for new targeted treatments. It could also help in electing those who are highly vulnerable.

However, Cancer Researchers UK claims that only further research will be able to establish and affirm a positive connection between gene GPC5 and the occurrence of lung cancer.

The research included a study of DNA samples from 754 people who had smoked fewer than 100 cigarettes in their lifetime. Chronic respiratory disease, exposure to second-hand smoke and family history of lung cancer was taken into consideration.

Researchers found that two sections of the genome seemed to be the likely cause. Further, study of 44 most common genetic alterations were studied in two other groups of non-smokers - half of whom had been diagnosed with lung cancer.

The common link was the same gene. A final study of 530 patients confirmed the result.