Never smoked a cigarette? You could still be at higher risk for lung cancer

Never-smokers carrying the rare EGFR T790M gene variant face 62 times the odds of lung cancer, a major study of 3.3 million people suggests.

Never-smokers carrying the rare EGFR T790M gene variant face 62 times the odds of lung cancer, a major study of 3.3 million people suggests.