For example, in the case of chronic leukemia, when the genes abl and bcr are together they produce a special protein, and a drug has been developed (Gleevec) which can suppress this protein, leading to full recovery from leukemia in patients for whom it is effective.
以慢性白血病為例，醫界已找出 abl、bcr 兩個基因在一起會產生一種特殊蛋白，現在已發展出一種藥物 Gleevec，若能在患者體內成功抑制這種蛋白，白血病就痊癒了。