A public consultation has shown broad support for controversial research being carried out at Newcastle University.
The DNA technique uses three people to create one baby in order to prevent genetic diseases being passed through generations.
The findings of the consultation will now be passed to the government and, if approved, could be made law within five years.
However, opponents of the research say that it is unethical.
More top news
Callum Young, who will now be 23, was last seen on August 27 last year at his home in Hylton Road.
Gunner Paul Ferguson was on leave from the Army when he died in the early hours of Sunday August 21.
Dutch International Darryl Janmaat left for Watford, USA's DeAndre Yedlin arrived from Spurs and Tim Krul left for a season's loan at Ajax.