What causes acute lymphocytic leukemia (ALL)?

What causes acute lymphocytic leukemia (ALL)?

Experts don’t know exactly what causes ALL. Many people with ALL have acquired genetic mutations (changes to genes) in the ALL cells. Changes to chromosomes, which contain genes, are also common in people with ALL. Research suggests that these changes aren’t inherited, which means parents do not pass them to children. Instead, the changes likely happen during a person’s lifetime.