We don't know exactly what causes ALL, but research is going on all the time to try and find the answer.
Young people with certain rare genetic conditions, like Down's Syndrome, are at an increased risk of getting ALL compared to the general population. A genetic condition is something you are born with.
Young people with certain rare genetic conditions, like Down's Syndrome, are at an increased risk of getting ALL compared to the general population. A genetic condition is something you are born with.

