Primary Aims
1.1.1 To compare EFS in patients with newly diagnosed T-ALL and T-LLy who are randomized to a modified ABFM backbone versus bortezomib plus the modified ABFM backbone.
1.2 Secondary Aims
1.2.1 To determine the safety and feasibility of modifying standard therapy for T-ALL and T-LLy based on the results of UKALL 2003, which includes a dexamethasone-based Induction, additional doses of pegaspargase (PEG-ASP) during Induction and Delayed Intensification (DI), and dexamethasone pulses during Maintenance therapy