Dr Andy Greenfield, from the University of Oxford, said: “It is a triumph of scientific innovation in the IVF clinic – a world-first that shows that the UK is an excellent environment in which to push boundaries in IVF; a tour de force by the embryologists who painstakingly developed and optimised the micromanipulation methods; an example of the value of clinical expertise, developed over decades of working with children and adults suffering from these devastating diseases, being used to support a new intervention and subsequent follow-up, potentially for many years.”