肿瘤细胞中最基本的改变是原癌基因发生突变，这些变异基因所生产的缺陷蛋白是肿瘤精准治疗的理想靶点。与同时杀伤肿瘤细胞和正常细胞的传统化疗相比，靶向治疗的核心价值就是能够非常高效地选择性清除肿瘤细胞，从而显著延长患者的生存期，并减少治疗的副作用。

One of the most fundamental changes found in cancer cells is the presence of mutations in oncogenes. The defective proteins produced by these altered genes are ideal targets for a precise cancer therapy. Compared with the traditional chemotherapy that causes damage to both cancer cells and healthy cells, the core value of the targeted therapy is able to selectively deplete tumor cells with a high efficiency, thereby dramatically increasing cancer patients’survival rate and limiting side effects.

肿瘤精准治疗已逐步进入医保时代，极大地提高了药物的可及性，并减轻了个人和社会经济成本压力。

In cancer, precision medicine has been gradually covered by the current health insurance system; this greatly improves the availability of medicines and reduced the pressure on individuals, and social and economic costs.