Question to the Department of Health and Social Care:

To ask the Secretary of State for Health, what assessment his Department has made of whether eggs used in the creation of embryos through maternal spindle transfer or pronuclear transfer have had their mitochondrial or nuclear genes altered in the process.

Neither the nuclear DNA or mitochondrial DNA of the patient’s egg is altered during the creation of an embryo during mitochondrial donation treatment, using the maternal spindle transfer (MST) and pro-nuclear transfer (PNT) techniques.