Early results promise a one-off treatment, but gene-editing and gene therapies will have to show durable protection and be affordable to the many patients with sickle cell disease in the world.

中文翻译：

---

镰状细胞基因疗法接近分水岭

早期结果承诺一次性治疗，但基因编辑和基因疗法必须显示出持久的保护作用，并且对世界上许多镰状细胞病患者来说是负担得起的。