A BRITISH toddler has become the first person in the world to be born with an extra strand in his DNA, in a condition so rare doctors don't even know its name.

Alfie Clamp, from Warwickshire, northern England, has a seventh chromosome which has an extra arm.

Doctor discovered the extremely rare condition when Alfie, who was born blind and with severe disabilities, was just six weeks old.

A series of tests revealed the extra strand of DNA, which has left the medical world baffled.

His parents, Gemma and Richard, and doctors have no idea what his life expectancy will be or whether his condition will even improve.



The little boy has digestive problems, needs drugs to help his body absorb nutrients and suffers fits sparked by high temperatures and metabolic problems.



And in his short life he has been rushed to hospital six times after a series of problems, including stopping breathing.



But his parents said despite his ordeal their son means the world to them and are now concentrating on the simple things, the Daily Mail reported.



Mrs Clamp said: “When the doctors told us I was absolutely devastated. As a pregnant mum you spend nine months thinking about what it will be like when your baby takes their first step or claps their hands.



“Having a boy like Alfie makes you appreciate the little things. He didn't roll over until he was 18 months old, but we were so excited when he did.”

Read more about Alfie Clamp born with extra DNA in world first and see a picture of him at the Daily Mail.