2015年，英国立法者批准了一种叫做“线粒体捐赠”的种系转基因 — — 通常也称为“三亲”体外受精（IVF ） 。
In 2015, British lawmakers approved a form of germline modification known as “mitochondrial donation” – commonly referred to as “three-parent” in vitro fertilization (IVF).