Doctors treating a critically ill boy with a devastating skin disease used experimental gene therapy to create an entirely new skin for most of his body in a desperate attempt to save his life.
Two years later, the doctors report the boy is doing so well that he doesn’t need any medication, is back in school and even playing soccer.
“We were forced to do something dramatic because this kid was dying,” said Dr Michele De Luca of the University of Modena in Italy, who got a call for help from the German doctors treating the boy.
The boy, then 7, was hospitalised in June 2015 with blisters on his limbs, back and elsewhere. He quickly lost about 60 per cent of the outer layer of his skin and was put into an induced coma to spare him further suffering.
Doctors at Children’s Hospital at Ruhr University in Bochum, Germany, tried skin grafts from his father and donor skin, but all failed.
The boy’s parents asked about experimental treatments, and Dr De Luca and his colleagues were contacted.
They had previously used gene therapy to produce a small piece of skin in a similar case. They told the family that the boy’s precarious state meant that he might not survive the complicated surgeries needed to save him.
“It was a tough decision for us, but we wanted to try for (our son),” the boy’s father said.
The boy had a rare, incurable skin disease called junctional epidermolysis bullosa, caused by genetic mutations. People with the disease lack critical proteins that attach the outer layer of the skin to the inner layer, resulting in fragile skin with almost constant blisters and open sores.
To fix that, the doctors took a small piece of the boy’s skin from an area that was OK. In the lab, they added a normal version of his bad gene to his skin cells. They grew sheets of the boy’s skin, in much the same way skin grafts are grown for burn victims.
In total, they grew close to a square metre of skin. The lab-grown skin was then transplanted on to the boy in three operations, ultimately covering 80 per cent of his body.
Ten days later, the new skin was already beginning to grow, Dr De Luca said. After eight months, the doctors said that nearly all of the boy’s skin had been generated by the modified stem cells.
So far, no problems have been detected. Dr De Luca said the boy will be monitored closely for skin cancer and other potential issues.
Details of the case were published on Wednesday in the journal Nature.
The boy and his family later visited Dr De Luca and the other Italian doctors involved in his treatment.
“The parents are very grateful and say their life has completely changed,” Dr De Luca said, recalling how the boy spontaneously began taking off his clothes. “The boy was so happy with his new skin that he wanted to show off.”