His mum and dad want to track down the parents of the other children with his condition to better understand their son's diagnosis and offer support. Jack has a mutation of the PPFIBP1 geneFor the first few weeks of his life, Amanda and Nick's fourth child Jack appeared completely healthy. The results showed Jack has a mutated PPFIBP1 gene. "They explained that every gene has two copies and with this particular gene I carry one mutated copy and Nick carries another mutated copy," said Amanda. Alongside all of this Amanda is continuing her search for other parents of children with Jack's condition.