What’s Driving Lung Cancer in Nonsmokers? Understanding RET-Positive Lung Cancer
Lung cancer isn’t just a smoker’s disease. In fact, up to 20% of lung cancer patients have never smoked, and many are younger women. One reason? Genetic mutations like RET fusions, which can drive cancer growth even without traditional risk factors. This type, called RET-positive lung cancer, is more common in never smokers and doesn’t show up on routine screenings.
That’s why genetic testing (also called biomarker testing) is critical. It can help doctors choose targeted treatments that work better and offer more hope—especially for patients with stage 4 or hard-to-treat lung cancer. Even if you’ve never smoked, if you’re experiencing unusual symptoms or have lung cancer in your family, talk to your doctor about testing. Early detection and personalized care are changing what’s possible. (Source: American Cancer Society, Yale Medicine, J Clin Oncol)
