Thymic adult T-cell acute lymphoblastic leukemia stratified in standard- and high-risk group by aberrant HOX11L2 expression: experience of the German multicenter ALL study group.

Adult T-cell acute lymphoblastic leukemia (T-ALL) continues to represent an unfavorable disease. Molecularly based treatment stratifications could help improve outcome. The prognostic impact of HOX11 and HOX11L2 expression has been an area of controversy. We have investigated 286 adult T-ALL patients enrolled into the German Multicenter ALL (GMALL) therapy protocols by comparative real-time RT-PCR. High HOX11 expression and HOX11L2 expression were predominantly seen in thymic T-ALL (P