The family of Bradley Lowery from Blackhall are trying to raise £700,000 for potentially life saving treatment in the US.
Bradley is 5 years and has Stage 4 high risk Neuroblastoma - an aggressive form of childhood cancer.
18 months ago Bradley was declared cancer free, but last month his family received the news that he had relapsed - and the cancer had returned.
Neuroblastoma has an 80% chance of reoccurring even after initial successful treatment.
An anti-body therapy only available in America could see Bradley given drugs to prevent the cancer returning again- if it was successful.
The treatment is expensive and extra funds will be needed to pay travel and living costs during Bradley's time in hospital in the States.