A terminally ill girl who is believed to be the only child in the UK suffering from a rare disease has been given some heavyweight support.

Sophie Newman, nine, was diagnosed with PKAN at three years old, which comes from a lack of iron in the brain.

Her family is raising money to make Sophie’s remaining years as comfortable as possible. 

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They have been boosted by unbeaten boxers Anthony Joshua and Tyson Fury who have posted their support.

The stars shared videos ahead of a boxing event next month which is raising money and awareness for Sophie.

World heavyweight champion Joshua said: "I wanna say a massive good luck to everyone that’s fighting on the show.

"Dig deep, give it your best, that’s all you can do. Also I wanna say hello to little Sophie. I’ve donated a glove and I hope you guys can raise as much money as possible."

Fury also posted for the Beckenham girl, and said: "I want to say good luck to all the boys and sending my luck to little Sophie Newman.

"Everyone dig as deep as they can and let’s raise as much money as possible for the little girl. It’s going to a great cause."

Little Sophie posted her own response, saying: "Thank you so much for my support."

Nina Cranstoun, a boxing promoter from Bromley, is a family friend who found out about Sophie’s condition last year.

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"I was completely and utterly shocked," Nina told News Shopper.

"I have known the family for like 20 years. Obviously we all get on with our lives, but I couldn’t believe I didn’t know."

Nina has been using her knowledge and contacts from the world of boxing ever since to help the family.

She has already raised hundreds of pounds and her next event is in Sydenham next month.

"In my world everything is possible, you just need faith in who you are and I don’t take no for an answer," she said.

Aaron Park, Sophie’s cousin, is also fighting on Nina’s upcoming Rise of the Champions show for the junior city middleweight crown.

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Nina said the videos from some of Britain's top sportsmen were "unbelievably priceless" and that she couldn't find the right words to thank the boxers enough.

Sophie’s grandmother, Jacky, told News Shopper the video clips were "lovely" and thanked Nina for the support.

"She has been fantastic and we are hoping to get an electric wheelchair for Sophie. We are also looking at a bungalow because the house isn’t suitable.

"Even yesterday I saw her fall down the stairs."

Sophie’s rare disease causes her muscle spasms, making things like eating and walking extremely difficult.

The grandma added: "Her body will eventually shut down completely. A couple of children have made it to 18, but we don't know how long she has left.

"We are just trying to give her a better quality of life now."

The semi-professional boxers are currently training hard in Bexley ahead of the fights.

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Nina said the trainers and fighters had gone "above and beyond" and that coaches Percy Rutherford and Ernie Rutherford were working freely.

The 10 fights, featuring boxers from south-east London against a northern team, will be held on April 12 in Livesey Hall, Sydenham.