HER2阳性胃癌的治疗研究进展

抗人表皮生长因子受体2（human epidermal growth factor receptor 2，HER2）的靶向治疗显著延长了HER2阳性晚期胃癌患者的生存期，抑制HER2通路已成为HER2阳性晚期胃癌一线治疗的基础策略。ToGA研究中的曲妥珠单抗联合5-Fu/卡培他滨及顺铂的化疗方案是HER2阳性晚期胃癌一线化疗的标准方案。后ToGA时代，曲妥珠单抗联合其它的多个化疗方案不仅在晚期胃癌的二线治疗和转化性治疗中有突出的疗效，而且在局部进展期胃癌的新辅助治疗中有望发挥更大的作用。目前胃癌抗HER2治疗的研究方向是开发新的抗HER2药物，以及与其它信号通路的靶向药物联合。动态的基因检测有助于明确抗HER2治疗耐药的分子生物学机制，目前的临床研究在克服耐药性方面已取得进展。本文就HER2阳性晚期胃癌治疗方面的最新进展及今后的研究方向进行综述，以期指导临床实践。 

Advances in the treatment for HER2-positive advanced gastric cancer

The addition of HER2-targeted therapy has markedly improved the survival and prognosis of patients with advanced gastric cancer. Inhibiting the HER2 signaling pathway has become the backbone treatment for advanced HER2-positive gastric cancer in the first-line setting. TOGA trial established trastuzumab in combination with cisplatin and 5-flurouracil as the standard first-line treat-ment. In the post-TOGA era, combinations of trastuzumab with other chemotherapy agents were proven to be effective as both the second-line treatment and the conversion treatment. Such combinations are promising in the neoadjuvant treatment for locally ad-vanced gastric cancer. Research focuses on the development of novel anti-HER2 agents in combination with agents targeting against other signal pathways. Real-time monitoring of the gene expression profile is the key to discovering the mechanism of trastuzumab re-sistance. The preliminary results of existing clinical trials have shown potential to overcome resistance to trastuzumab. In this review, we summarized the treatment advancement for HER2 positive gastric cancer and the direction for future development, thereby provid-ing guidance on clinical practice.