![]() ![]() Treatment will consist of three main phases, Remission Induction, Consolidation, and Continuation. To determine whether prolonged (24 hour) intravenous infusions of HDMTX produce greater antileukemic effects than short (4 hour) infusions, based on the inhibition of de novo purine synthesis in bone marrow blasts and the decrease in circulating blasts during the 4 day "window" prior to initiation of conventional remission induction therapy.To identify whether prolonged (24 hour) intravenous infusions of HDMTX produce greater methotrexate polyglutamate (MTXPG) accumulation than short (4 hour) infusions 42 hours after 1 gm/m2 of HDMTX, stratified for lineage (T- vs B-lineage) and ploidy (hyperdiploid vs non-hyperdiploid B-lineage).To determine if CNS irradiation can be safely omitted in the context of the systemic therapy used in the protocol.These are the following secondary objectives: ![]() Why Should I Register and Submit Results?. ![]()
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