Links Between Genetics and Lung Cancer Being Explored
Lung cancer is the most common cancer in the world and the most common cause of cancer-related deaths in Canada. Although 80 per cent of lung cancer cases are the result of smoking, it’s estimated that eight to 15 per cent of lung cancers develop as the result of genetic mutations.
“We’ve known for a long time that there’s a genetic component to lung cancer—no doubt about it,” says Dr. Rayjean Hung. “Only 10 to 15 per of smokers actually develop lung cancer, and the risk among so-called ‘never smokers’ is increased if they have family histories.”