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The 27-year-old patient's prospects were bleak. In May 2016, he found out he had AIDS. Two weeks later, he was told he had acute lymphoblastic leukemia. 这位27岁的病人前景黯淡。2016年5月，他发现自己患有艾滋病。两周后，他被告知患有急性淋巴细胞白血病。 But doctors offered the Chinese citizen a ray of hope: a bone marrow transplant to treat his cancer and an extra experimental treatment to try to rid his system of HIV, according to a new paper published in The New England Journal of Medicine. 但根据《新英格兰医学杂志》最新发表的一篇论文，医生们给这位中国公民带来了一线希望：通过骨髓移植来治疗他的癌症，并进行另外的实验性治疗，试图清除他体内的艾滋病病毒。 This involved using the gene editing tool CRISPR-Cas9 to delete a gene known as CCR5 from bone marrow stem cells taken from a donor, before transplanting them into the patient, Peking University scientists said in the study. 参与研究的北京大学科学家说，治疗手段包括使用基因编辑工具CRISPR-Cas9从捐赠者的骨髓干细胞中删除一种名为CCR5的基因，然后将干细胞移植到患者体内。 | 
