Treatment of Newly Diagnosed High Risk Pediatric Acute Lymphoblastic Leukemia
* Clinical and genetic factors consistent with High risk : Induction → Consolidation
1. BM MRD \< 0.01% : IM #1 → DI #1 → IM #2 → Maintenance
2. BM MRD ≥ 0.01% : IM #1 → DI #1 → IM #2 → DI #2 → Maintenance
3. BM MRD ≥ 0.01% after Consolidation
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1. T cell ALL : Change to very high risk regimen
2. Pre-B ALL : IM #1 → Intensification
1. BM MRD \< 0.01% after IM #1 : DI #1 → IM #2 → DI #2 → Maintenance
2. BM MRD ≥ 0.01% after IM #1 : Change to Very high risk regimen
* Difference in the number of \'interim maintenance(IM)\' and \'delayed