Any precursor B-cell acute lymphoblastic leukemia in which the cause of the disease is a mutation in the PAX5 gene. The disease is leukemia, acute lymphoblastic, susceptibility to, 3 (MONDO_0014241). Also known as: PAX5 precursor B-cell acute lymphoblastic leukaemia, PAX5 precursor B-cell acute lymphoblastic leukemia, PAX5-related leukemia predisposition, leukemia, acute lymphoblastic, susceptibility to, type 3, precursor B-cell acute lymphoblastic leukaemia caused by mutation in PAX5, precursor B-cell acute lymphoblastic leukemia caused by mutation in PAX5.