Five-month-old Lucas Neagu had a high chance of inheriting a muscle weakening disease which runs in his family.

But his parents underwent pioneering embryo screening treatment meaning he will never suffer from the condition and 200 other genetic disorders.

Mum Carmen Neagu, 27, saw her father suffer with Charcot-Marie-Tooth(CMT) disease and was worried Lucas would inherit it after being told he had a 50 per cent chance of developing it if she conceived naturally.

But Carmen and husband Gabriel, 31, were selected to be the first couple to receive the new treatment at a London clinic.

The specialist procedure selected out around 200 genetic conditions from the embryos including Down's Syndrome.