As the incidence rate and mortality of lung cancer in Xuanwei, YunnanProvince, China, is higher than that in the whole country and the rest the world, andseveral previous studies have demonstrated the genetic mutation characteristics oflung cancer patients with rare EGFR mutations, compound mutation rates, and RASmutation rates in Xuanwei (4, 5, 8). Here, EGFR is linked to lung carcinoma.