Question to the Department of Health and Social Care:

To ask Her Majesty's Government, further to the Written Answer by Lord Kamall on 16 November (HL3662), how performance of pronuclear transfer in mice might remain a reliable predictor of its efficacy in humans; and to what extent the physiopathological or genetic variation between human patients is greater than the physiological or genetic differences between humans and mice.

The Department and the Human Fertilisation and Embryology Authority do not hold recent information on whether pronuclear transfer in mice remains a reliable predictor of its efficacy in humans nor on the extent that physiopathological or genetic variation between human patients is greater than the physiological or genetic differences between humans and mice.