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In a massive effort to catalog the molecular causes of stomach cancer, scientists have identified four subtypes of tumors based on shared mutations and other molecular abnormalities. They say the new classification promises to advance clinical research to develop improved therapies for the third-leading cancer killer worldwide.

Researchers from the Ó³»­´«Ã½ and elsewhere have identified novel mutations in a well-known cancer-causing pathway in lung adenocarcinoma, the most common subtype of lung cancer. Knowledge of these mutations could potentially identify a greater number of patients with treatable mutations because many potent cancer drugs that target these mutations already exist. In addition, these findings may expand the number of possible new therapeutic targets for this disease.