What are the symptoms of having high risk b-precursor acute lymphoblastic leukemia?

Fatigue, anemia...: Are common, other symptoms include bruising or an infection. The symptoms are caused by low blood counts (the leukemia cells suppress bone marrow production of normal blood cells like red cells, white cells, platelets). The symptoms don't tell you that someone is 'high risk' or 'b-precursor'--you need special lab tests of the cells and bone marrow to determine that.