Smoking is the most frequent cause of lung cancers, but there is a significant number of people developing the disease too, having never smoked. Even if another risk factor for non-smokers is passive smoking, there is another cause that can cause cancer, without there ever having been exposed to tobacco smoke.
A percentage of 30% of patients with lung cancer, it would be for a genetic cause. To find U.S. researchers who have found genetic variations responsible for these cases of lung cancer. (more…)
