The parents who fundraised over half a million pounds for treatment to save their son's life have reported that it's working.
Oscar-Saxelby Lee, five, from Worcester, has T-cell acute lymphoblastic leukaemia, which is difficult to treat.
He had a transplant in May last year (2019) after thousands of people across the UK signed-up to a register to try and help him find a donor. He was briefly cancer free, but it then returned.
His family then became aware of an overseas trial called CAR-T in Singapore, and his parents Olivia Saxelby and Jamie Lee started fundraising the cost to give their son a chance.
They then raised £600,000 - more than their £500,000 target, and Oscar was able to receive the treatment.
Oscar's parents now say that the treatment is working for him - and that there is 'no disease detected' in their little boy.
On a recent Facebook post they wrote: "Thank you, Thank you, Thank you from the bottom of our hearts to all of you for making this possible!"
"We are so so so so soooooo proud!"
They also say this is early days - as Oscar still needs another bone marrow transplant and there is still a while to go before Oscar is fully recovered and able to come home.
For more information on stem cell donation visit: https://www.nhsbt.nhs.uk/what-we-do/transplantation-services/stem-cells/.