OSCAR Saxelby-Lee is receiving treatment today which could help him win his cancer battle, his parents have revealed.

In a post on Facebook, the Worcester five-year-old's parents said he was having a donor lymphocyte infusion which could potentially remove his remaining cancer cells.

During the treatment, Oscar has frozen T cells from his donor infused into his blood with the hope they will tackle the remaining cells that contain the disease.

However, there is a very high risk of Graft-versus-host disease (GVHD), which can be life threatening, his parents said.

GVHD is an immune condition that occurs in a patient after transplantation when immune cells in donor tissue attack the host's own tissues.

Oscar's parents said that they felt they could not pass up the chance to give him this treatment, although it's risky.

They also said that the CAR T treatment in Singapore, for which the community has raised £500,000 in three weeks, would remain as a back-up option, should the infusion fail to help him.

To see the full post from his parents, click here.