Acute Myeloid Leukemia

Incidence

Peak incidence of 65 years of age.

Etiology

Classification

??(WHO) : blast > 20% (FAB?? 30%? ??)
??? 80% AML / ??? 80% ALL

??????/??????: ?? ??? ??! – AML : 016-821-1517 

WHO 2016 Classification of Myeloid Neoplasms with Germline Predisposition

  • Myeloid neoplasms with germline predisposition without a preexisting disorder or organ dysfunction
    • Acute myeloid leukemia with germline CEBPA mutation 
    • Myeloid neoplasms with germline DDX41 mutation 
  • Myeloid neoplasms with germline predisposition and preexisting platelet disorders
    • Myeloid neoplasms with germline RUNX1 mutation  
    • Myeloid neoplasms with germline ANKRD26 mutation
    • Myeloid neoplasms with germline ETV6 mutation 
  • Myeloid neoplasms with germline predisposition and other organ dysfunction
    • Myeloid neoplasms with germline GATA2 mutation 
    • Myeloid neoplasms associated with bone marrow failure syndromes 
    • Myeloid neoplasms associated with telomere biology disorders 
    • Myeloid neoplasms associated with Noonan syndrome 
    • Myeloid neoplasms associated with Down syndrome 

WHO 2016 Classification of Acute Myeloid Leukemia and Related Neoplasms

  • Acute myeloid leukemia (AML) with recurrent genetic abnormalities
    • AML with t(8;21)(q22;q22); RUNX1-RUNX1T1 
    • AML with inv(16)(p13.1q22) or t(16;16)(p13.1;q22); CBFB-MYH11 
  • Acute promyelocytic leukemia with PML-RARA 
    • AML with t(9;11)(p21.3;q23.3); MLLT3-KMT2A 
    • AML with t(6;9)(p23;q34.1); DEK-NUP214 
    • AML with inv(3)(q21.3q26.2) or t(3;3)(q21.3;q26.2); GATA2, MECOM 
    • AML (megakaryoblastic) with t(1;22)(p13.3;q13.3); RBM15-MKL1 
    • Provisional entity: AML with BCR-ABL1 
    • AML with mutated NPM1 
    • AML with biallelic mutations of CEBPA 
    • Provisional entity: AML with mutated RUNX1 
  • AML with myelodysplasia-related changes
    • Therapy-related myeloid neoplasms 
  • AML, not otherwise specified (NOS)
    • AML with minimal diwerentiation 
    • AML without maturation 
    • AML with maturation 
    • Acute myelomonocytic leukemia 
    • Acute monoblastic/monocytic leukemia 
    • Pure erythroid leukemia 
    • Acute megakaryoblastic leukemia 
    • Acute basophilic leukemia 
    • Acute panmyelosis with myelofibrosis 
  • Myeloid sarcoma 
  • Myeloid proliferations related to Down syndrome
    • Transient abnormal myelopoiesis (TAM) 
    • Myeloid leukemia associated with Down syndrome

2017 European LeukemiaNet Risk Stratification by Genetics for Acute Myeloid Leukemia

Favorable t(8;21)(q22;q22); RUNX1-RUNX1T1  inv(16)(p13.1q22) or t(16;16)(p13.1;q22); CBFB-MYH11  Mutated NPM1 without FLT3-ITD or with FLT3-ITD low(c)  Biallelic mutated CEBPA 
Intermediate Mutated NPM1 and FLT3-ITD high(c)  Wild type NPM1 without FLT3-ITD or with FLT3-ITD low(c) (w/o adverse-risk genetic lesions)  t(9;11)(p21.3;q23.3); MLLT3-KMT2A d  Cytogenetic abnormalities not classified as favorable or adverse 
Adverse t(6;9)(p23;q34.1); DEK-NUP214  t(v;11q23.3); KMT2A rearranged  t(9;22)(q34.1;q11.2); BCR-ABL1  inv(3)(q21.3q26.2) or t(3;3)(q21.3;q26.2); GATA2, MECOM(EVI1)  �5 or del(5q); �7; �17/abn(17p)  Complex karyotype, e monosomal karyotype f  Wild type NPM1 and FLT3-ITD high(c)  Mutated RUNX1 g  Mutated ASXL1 g  Mutated TP53 h 

Clinical features

AML
??, ????? ??. ?? ????, 
??, Myeloid sarcoma(chloroma)
M3? DIC
M4,5? ????, ??, ?? ??
M7? ?? type? ?? ?? 5? ??? ??.
Usually MPO+, except monocytic & megakaryoblastic leukemia

Genetic findings

Immunophenotypic findings

Prognostic factors

#??? hyperleukocytosis(>100,000)? early CNS bleeding, pul. leukostasis
#????(CR)? ?? ????? CR??? ??? ?? ??.

Down SD: AML? 30? ? ??? ?? good. drug toxicity? ?? reduction ??

Clinical presentation

Symptoms

Physical findings

Hematologic findings

Treatment

AML: CyAn+1st SCT
APML(M3): ATRA+An+SCT
ALL: VPDL+2nd SCT

Retinoic acid syndrome (ATRA ???)
??? ????? ???? ??. ?? induction? ????.
?? 3? ? ??, ????, ??, ??, � ? Glucocorticoid, CTx(An), supportive Tx

AML: M phase ?- ??, ???? ??
ALL: G0/G1 phase ? – ???? ??

PBSNeutrophil >1,000/?l, plt >100,000/?l, ?? ???, NO BLAST
BMCellularity >20%, blast < 5%, NO AUER ROD
NO EXTRAMEDULLARY LEUKEMIA
RT-PCR, FISH?? ???/??? ???? ??

????(CR)? ?? – CR ??? consolidation Tx.

  1. ??: ????? ???? BM > CNS, ?? 
  2. ??? ?? ? ??? ?????? sepsis

Induction chemotherapy

Postremission therapy

Supportive care

??
Packed RBC ?? Hb>8g/dL ??
??? ?? ??? ?? (GVHD ??)
??????? (??? ?? ??? ??)

Treatment for refractory or relapsed AML

Treatment of acute promyelocytic leukemia

Figure 100-2 Flowchart for the therapy of newly diagnosed acute myeloid leukemia (AML). a Risk stratification according to the European LeukemiaNet (see Table 100-3). b Younger patients (<60�65 years) should routinely be owered investigational therapy on a backbone of standard chemotherapy for induction and consolidation. c Older patients, especially those >65 years or with adverse-risk disease, or those who are unfit for intensive daunorubicin + cytarabine regimens, may be considered for investigational therapy alone or in combination with lower intensity chemotherapy regimens (azacitidine, decitabine).
d Investigational therapy as maintenance should be considered if available (axer consolidation for younger patients and older patients with favorable-risk disease, and for all other older patients axer induction).