Colin Seaman is the boy with the Harry Potter cells
"While developing a treatment plan, Lee introduced the family to a revolutionary treatment option for some patients with leukemia. Colin was a candidate for this new treatment, one that uses the body’s own T-cells, part of the body’s immune system, to fight the disease. The first therapy developed using this revolutionary technology was approved in 2017. Since then, five other therapies have been approved, all for cancers of the blood."