几十年来，国际社会基本遵守了1997年通过的联合国教科文组织宣言，2015年，该宣言又增加了内容，所有国家“都应该杜绝独自开展”种系基因疗法的可能。
For decades, the international community has largely adhered to the UNESCO declaration, adopted in 1997, which was updated in 2015 with the injunction that all countries “should renounce the possibility of going it alone” on germline gene therapy.