Abstract
Detection of chromosomal abnormalities by cytogenetic analysis is critical in diagnosis and therapeutic decision-making in AML. Detection of t(8;21)(q22;q22.1), inv(16) (p13.1;1q22), t(16;16) (p13.1;q22) or translocations generating PML-RARA t(15;17) fusion transcripts, allow the diagnosis to be made even without the presence of more than or 20% blasts as per WHO classification (2016). These recurrent genetic abnormalities are all associated with a good prognosis. On the other hand, other cytogenetic abnormalities such as complex karyotypes (≥3 cytogenetics abnormalities) without recurring cytogenetic abnormalities are associated with adverse prognosis. A large proportion of AMLs do not show cytogenetic abnormalities and in them identification of CEBPA, NPM1, and FLT3-ITD mutations predict prognosis and response to therapy. Thus, two more entities have been added in cytogenetically positive AML: AML with mutated NPM1 and AML with biallelic CEBPA mutations. AML with RUNX1 mutation and AML with BCR-ABL1 fusion have been added as provisional entities in the WHO classification (2016).
The following 33 case studies include all categories seen in AML: Recurrent cytogenetic abnormalities, AML with myelodysplasia-related changes (AML-MRC), Therapy-related AMLs (t-AML), secondary AMLs (s-AML), and AML-NOS (Annexure).
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Annexure
Annexure
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Case Study 3.1: Acute Myeloid leukemia with t(8;21)(q22;q22.1);RUNX1-RUNX1T1 and KIT Gene Mutation
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Case Study 3.2: Acute Myeloid leukemia with a variant 3 way translocation t(8;17;21) (q22;q23;22.1);RUNX1-RUNX1T1
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Case Study 3.3: Acute Myeloid Leukemia, t(8;21)(q22;q22) with rare duplication of der (21)
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Case Study 3.4: AML with inv(16) (p13;q22)/t(16;16)p(13;q22);CBFB–MYH11
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Case Study 3.5: Acute Myeloid Leukemia with t(9;11)(p21;q23.3)(KMT2A-MLL3) with Trisomies of Chromosome 8 and 21
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Case Study 3.6: Acute Promyelocytic leukemia with PML-RARA, t(15;17) with Mutated FLT3-TKD (D835)
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Case Study 3.7: Acute Promyelocytic leukemia with variant (11;17)(q23;q21.1)(PLZF/RARA)
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Case Study 3.8: Acute Promyelocytic Leukemia with t(15;17) and t(9;22) Translocations, Trisomy 8 and multiple molecular abnormalities
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Case Study 3.9: Acute Promyelocytic Leukemia with PML-RARA t(15;17) with mutated FLT3-ITD
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Case Study 3.10: Acute Myeloid Leukemia with Normal Karyotype, mutated NPM1 and FLT3-ITD
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Case Study 3.11: Acute Myeloid Leukemia with normal Karyotype and NPM 1 Gene Mutation Mutation
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Case Study 3.12: Acute Myeloid Leukemia with Normal Karyotype and FL3-ITD Gene Mutation
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Case Study 3.13: Acute Myeloid Leukemia with t(11;19) and FLT3-ITD Mutation
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Case Study 3.14: Acute Myeloid Leukemia with Myelodysplasia related changes (AML-MRC) transformed from Aplastic Anaemia
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Case Study 3.15: Acute Myeloid Leukemia with Myelodysplasia related changes with Monosomy 7
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Case Study 3.16: Acute Myeloid Leukemia with Myelodysplasia Related Changes with Monosomal Karyotype
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Case Study 3.17: Acute Myeloid Leukemia (s-AML) from (MDS-EB2) with Myelodysplasia Related Changes with Complex Karyotype
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Case Study 3.18: Acute Myeloid Leukemia (t-AML) with Myelodysplasia Related Changes with Monosomy 7
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Case Study 3.19: Acute Myeloid Leukemia with Myelodysplasia Related changes with Complex Karyotype
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Case Study 3.20: Acute Myeloid Leukemia with Myelodysplasia Related changes (MDS-EB1) with complex Karyotype
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Case Study 3.21: Acute Myeloid Leukemia (t-AML) with t(11;19)(q23;p13.1) (KMT2A-ELL)
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Case Study 3.22: Therapy Related Acute Myeloid Leukemia (t-AML) with Hypodiploid Complex Karyotype
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Case Study 3.23: s-AML with Monocytic Differentiation with der(1) t(1;15)(q11;q13) Evolving from Polycythermia Vera
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Case Study 3.24: Acute Myeloid Leukemia (s- AML) from Primary Myelofibrosis with Complex Karyotype
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Case Study 3.25: Acute Megakaryoblastic Leukemia with Isolated deletion 9q
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Case Study 3.26: Acute Myeloid Leukemia, NOS, with Isolated Trisomy 11
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Case Study 3.27: Acute Myeloid Leukemia, NOS with Isolated Trisomy 14
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Case Study 3.28: Acute Myeloid Leukemia, NOS with sole abnormality of Trisomy 8
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Case Study 3.29: Acute Myeloid Leukemia: AML-M7 (NOS) with Complex Karyotype
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Case Study 3.30: Acute Myeloid Leukemia with Lineage Switch from ALL with TP53 alterations and Complex Karyotype
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Case Study 3.31: Acute Myeloid Leukemia with Normal Karyotype and NPM1 mutation on (RT-PCR) with NPM1 and FLT3-ITD mutation on NGS
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Case Study 3.32: Acute Myeloid Leukemia with t(8;21) and RUNX1-RUNX1T1 Gene Rearrangement on RT-PCR and NGS
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Case Study 3.33: Acute Myeloid Leukemia with Normal Karyotype and NPM1 mutation on RT-PCR and NGS
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Bhargava, M. (2021). Acute Myeloid Leukemia. In: Hematologic Malignancies. Springer, Singapore. https://doi.org/10.1007/978-981-33-4799-1_3
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