Gefitinib (Iressa, ZD1839), a specific tyrosine kinase inhibitor that targets the epidermal growth factor receptor (EGFR), is a novel molecular-targeting antineoplastic agent.

• 摘要吉非替尼是一种新型的分子靶向抗癌药物，它选择性抑制表皮生长因子受体酪氨酸激酶而发挥作用。