Cytogenetic abnormalities commonly associated with acute lymphoblastic leukemia (ALL) are detected by fluorescence in situ hybridization (FISH). Probes PDGFRb (5q32), BCR/ABL1-ASS1 t(9;22), JAK2 (9p24.1), EPOR (19p13.2) and CRLF2 (Xp22.33/Yp11.32) are included in the ALL FISH (Ph-like) Profile.