Rare EGFR T790M Mutation Linked to Massive Lung Cancer Risk in Nonsmokers
A study published in *Science* identifies the rare EGFR T790M gene mutation as a primary driver of lung cancer in people who never smoked. The mutation, prevalent in Southern Appalachia, increases cancer risk by 62 times for nonsmokers and 10 times for smokers. Researchers used 23andMe data to confirm its impact, highlighting the need for genetic-based screening guidelines.
