Lauren Frayer

Those with the mutation will need annual MRIs and ultrasounds for life.

The sperm bank says it sends its deepest sympathies.

Lauren Frayer, NPR News, London.

President Trump said this to Politico about London Mayor Sadiq Khan.

And he went on to say that Khan, a popular center-left politician who is of Pakistani descent, owes his election victories to the rising number of immigrants here in London.

Khan in turn told Politico that Americans are actually flocking to London, in part because of its liberal values that are the antithesis of Trump's.

He said the U.S.

president, who has insulted him in the past many times, seems to be obsessed and he doesn't know why.

Lauren Freyer, NPR News, London.

President Trump said this to Politico about London Mayor Sadiq Khan.

And he went on to say that Khan, a popular center-left politician who is of Pakistani descent, owes his election victories to the rising number of immigrants here in London.

Khan in turn told Politico that Americans are actually flocking to London, in part because of its liberal values that are the antithesis of Trump's.

He said the U.S.

president, who has insulted him in the past many times, seems to be obsessed and he doesn't know why.

Lauren Freyer, NPR News, London.

Scientists behind this new treatment call it the world's first therapy of its type, using advanced gene editing with certain immune cells.

It's being tried for patients whose cancer has not responded to standard treatments.

The first patient was a 13-year-old girl.

She and eight other children plus two adults have all undergone treatment as part of an early-stage clinical trial.

It was conducted by researchers at University College London and the city's Great Ormond Street Hospital.