Molecule Plays Early Role In Nonsmoking Lung Cancer

A new study suggests that a molecule called miR-21 is important in the development of lung cancer in never-smokers and in smokers. Lung tumors from never-smokers with mutations in a gene called EGFR had particularly high levels of the molecule. The findings may lead to improve targeted therapy for lung cancer, including tumors resistant to targeted drugs such as gefitinib.
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