种系基因编辑根据国际法是不允许的：欧洲人权和生物医学公约（尽管英国不是签署国）和联合国教科文组织的人类基因组和人权世界宣言都禁止这种行为。
Germline gene editing is not approved under international law: both the Council of Europe’s Convention on Human Rights and Biomedicine (although the UK is not a signatory) and UNESCO’s Universal Declaration on the Human Genome and Human Rights prohibit the practice.