Researchers have begun to identify which mutations and pathway changes lead to lung cancer in never-smokers - a first step in developing potential therapeutic targets. Never-smokers (defined as an individual who smoked fewer than 100 cigarettes in his or her lifetime) are estimated to account for 10 percent of lung cancer cases. However, in the past, researchers have not examined this patient population as extensively as they have studied patients with lung cancer who smoked, according to Timothy G. Whitsett, Ph.D...
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