The father of four brothers diagnosed with a rare life-threatening disease hopes a new website he is launching will eventually help lead to a cure.
Joshua Hartley (back, right) had his life-saving operation last year
Nathan Hartley and his brothers Daniel, Joshua and Luke, from Romsey, Hants, suffer from the genetic disorder X-Linked Lymphoproliferative Syndrome.
Two of the boys have undergone bone marrow transplants to save their lives.
Their father, David Hartley said he hopes the website will educate people, support sufferers and promote research.
Mr Hartley said: "We have had fantastic support for our boys but it would be great if we could be a catalyst to getting a cure.
"The three main functions of our website will be fundraising to commission medical research, as well as providing a support network for families who are also having to battle with the condition.
"We also want to educate people about the rare condition and try to stop people from feeling isolated."
The syndrome is one of the world's rarest disorders, affecting about 100 families worldwide.
He added: "We need support from everyone including clubs, societies, organisation and churches."
Nathan is scheduled to undergo a transplant on 29 September at Great Ormond Street.
Joshua, 13, and Daniel, nine, both had transplants in 2004, while five-year-old Luke is scheduled to undergo surgery next year.
The brothers were diagnosed with the disease, also known as Duncan's Syndrome, in November 2003. It attacks the immune system.
Their parents, David and Allison, were told their sons were unlikely to reach their teenage years without a bone marrow transplant.
Joshua had his operation after his mother Allison was found to be a match.
Earlier this month, Daniel returned to Romsey Abbey School for the first time since his transplant.
"We know we have been very lucky to date," said Mr Hartley.