(Dartmouth-Hitchcock Medical Center) Lung cancer results from effects of smoking along with multiple genetic components. A new study conducted at Dartmouth identifies two main pathways for the role of chromosome 15q25.1–a leader in increasing susceptibility to lung cancer–in modifying disease risk. One pathway is implicated in nicotine dependence. The other plays a part in biological processes such as nutrient transfer and immune system function. The findings increase our understanding of lung cancer cause and development.
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