Mixed Phenotype Acute Leukemia, B/Myeloid (Bilineal and Biphenotypic), With t(2;22)(q35;q12);EWSR1-FEV. 2021

Crystal Montgomery-Goecker, and Prasad Koduru, and Giovanni Botten, and Jian Xu, and Maurizio Ghisoli, and Stanton C Goldman, and JoEllen Krueger, and Vikas Bhushan, and Franklin Fuda, and Weina Chen
Department of Pathology.

Ewing sarcoma breakpoint region 1 gene (EWSR1) rearrangements are largely associated with the Ewing sarcoma family of tumors. We report the first case of infantile, mixed phenotype acute leukemia, B/myeloid (bilineal and biphenotypic [B-lymphoid and B-lymphoid/myeloid]), with a t(2;22)(q35;q12). The EWSR1-fifth Ewing variant gene fusion and nonsense mutation in STAG2 were detected by next-generation sequencing and markedly high expression of fifth Ewing sarcoma variant mRNA detected by quantitative reverse transcription polymerase chain reaction. The patient was treated with a combined myeloid/lymphoid leukemia regimen followed by allogeneic stem cell transplant and was in complete remission at 3.8-year follow-up. Our case study underscores the importance of a comprehensive evaluation of acute leukemia and provides insights into the phenotype of EWSR1 rearranged neoplasms in the context of partner genes and cell type.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D004268 DNA-Binding Proteins Proteins which bind to DNA. The family includes proteins which bind to both double- and single-stranded DNA and also includes specific DNA binding proteins in serum which can be used as markers for malignant diseases. DNA Helix Destabilizing Proteins,DNA-Binding Protein,Single-Stranded DNA Binding Proteins,DNA Binding Protein,DNA Single-Stranded Binding Protein,SS DNA BP,Single-Stranded DNA-Binding Protein,Binding Protein, DNA,DNA Binding Proteins,DNA Single Stranded Binding Protein,DNA-Binding Protein, Single-Stranded,Protein, DNA-Binding,Single Stranded DNA Binding Protein,Single Stranded DNA Binding Proteins
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014157 Transcription Factors Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process. Transcription Factor,Factor, Transcription,Factors, Transcription
D014178 Translocation, Genetic A type of chromosome aberration characterized by CHROMOSOME BREAKAGE and transfer of the broken-off portion to another location, often to a different chromosome. Chromosomal Translocation,Translocation, Chromosomal,Chromosomal Translocations,Genetic Translocation,Genetic Translocations,Translocations, Chromosomal,Translocations, Genetic
D015456 Leukemia, Biphenotypic, Acute An acute leukemia exhibiting cell features characteristic of both the myeloid and lymphoid lineages and probably arising from MULTIPOTENT STEM CELLS. B- and T-Cell Acute Lymphoblastic Leukemia,B- and T-Cell Leukemia, Acute,Leukemia, Lymphocytic, Acute, Mixed-Cell,Leukemia, Mixed, B- and T-Cell,Leukemia, Mixed-Cell,Lymphocytic Leukemia, Acute, B- and T-Cell,Acute Biphenotypic Leukemia,B and T Cell Acute Lymphoblastic Leukemia,B and T Cell Leukemia, Acute,Biphenotypic Acute Leukemia,Hybrid Acute Leukemias,Leukemia, Lymphocytic, Acute, Mixed Cell,Leukemia, Mixed, B and T Cell,Lymphocytic Leukemia, Acute, B and T Cell,Mixed-Lineage Acute Leukemias,Acute Biphenotypic Leukemias,Acute Leukemia, Biphenotypic,Acute Leukemia, Hybrid,Acute Leukemia, Mixed-Lineage,Acute Leukemias, Biphenotypic,Acute Leukemias, Hybrid,Acute Leukemias, Mixed-Lineage,Biphenotypic Acute Leukemias,Biphenotypic Leukemia, Acute,Biphenotypic Leukemias, Acute,Hybrid Acute Leukemia,Leukemia, Acute Biphenotypic,Leukemia, Biphenotypic Acute,Leukemia, Hybrid Acute,Leukemia, Mixed Cell,Leukemia, Mixed-Lineage Acute,Leukemias, Acute Biphenotypic,Leukemias, Biphenotypic Acute,Leukemias, Hybrid Acute,Leukemias, Mixed-Cell,Leukemias, Mixed-Lineage Acute,Mixed Lineage Acute Leukemias,Mixed-Cell Leukemia,Mixed-Cell Leukemias,Mixed-Lineage Acute Leukemia
D015470 Leukemia, Myeloid, Acute Clonal expansion of myeloid blasts in bone marrow, blood, and other tissue. Myeloid leukemias develop from changes in cells that normally produce NEUTROPHILS; BASOPHILS; EOSINOPHILS; and MONOCYTES. Leukemia, Myelogenous, Acute,Leukemia, Nonlymphocytic, Acute,Myeloid Leukemia, Acute,Nonlymphocytic Leukemia, Acute,ANLL,Acute Myelogenous Leukemia,Acute Myeloid Leukemia,Acute Myeloid Leukemia with Maturation,Acute Myeloid Leukemia without Maturation,Leukemia, Acute Myelogenous,Leukemia, Acute Myeloid,Leukemia, Myeloblastic, Acute,Leukemia, Myelocytic, Acute,Leukemia, Myeloid, Acute, M1,Leukemia, Myeloid, Acute, M2,Leukemia, Nonlymphoblastic, Acute,Myeloblastic Leukemia, Acute,Myelocytic Leukemia, Acute,Myelogenous Leukemia, Acute,Myeloid Leukemia, Acute, M1,Myeloid Leukemia, Acute, M2,Nonlymphoblastic Leukemia, Acute,Acute Myeloblastic Leukemia,Acute Myeloblastic Leukemias,Acute Myelocytic Leukemia,Acute Myelocytic Leukemias,Acute Myelogenous Leukemias,Acute Myeloid Leukemias,Acute Nonlymphoblastic Leukemia,Acute Nonlymphoblastic Leukemias,Acute Nonlymphocytic Leukemia,Acute Nonlymphocytic Leukemias,Leukemia, Acute Myeloblastic,Leukemia, Acute Myelocytic,Leukemia, Acute Nonlymphoblastic,Leukemia, Acute Nonlymphocytic,Leukemias, Acute Myeloblastic,Leukemias, Acute Myelocytic,Leukemias, Acute Myelogenous,Leukemias, Acute Myeloid,Leukemias, Acute Nonlymphoblastic,Leukemias, Acute Nonlymphocytic,Myeloblastic Leukemias, Acute,Myelocytic Leukemias, Acute,Myelogenous Leukemias, Acute,Myeloid Leukemias, Acute,Nonlymphoblastic Leukemias, Acute,Nonlymphocytic Leukemias, Acute
D015514 Oncogene Proteins, Fusion The GENETIC TRANSLATION products of the fusion between an ONCOGENE and another gene. The latter may be of viral or cellular origin. Chimeric Oncogene Proteins,Chimeric Proteins, Oncogene,Fusion Proteins, Oncogene,Oncogene Fusion Proteins,Oncogene Proteins, Chimeric,Fusion Oncogene Proteins,Oncogene Chimeric Proteins,Proteins, Chimeric Oncogene,Proteins, Fusion Oncogene,Proteins, Oncogene Chimeric,Proteins, Oncogene Fusion
D018389 Codon, Nonsense An amino acid-specifying codon that has been converted to a stop codon (CODON, TERMINATOR) by mutation. Its occurance is abnormal causing premature termination of protein translation and results in production of truncated and non-functional proteins. A nonsense mutation is one that converts an amino acid-specific codon to a stop codon. Codon, Termination, Premature,Codon, Unassigned,Mutation, Nonsense,Nonsense Codon,Nonsense Mutation,Premature Stop Codon,Unassigned Codon,Amber Nonsense Codon,Amber Nonsense Mutation,Nonsense Codon, Amber,Ochre Nonsense Codon,Ochre Nonsense Mutation,Opal Nonsense Codon,Opal Nonsense Mutation,Premature Termination Codon,Amber Nonsense Codons,Amber Nonsense Mutations,Codon, Amber Nonsense,Codon, Ochre Nonsense,Codon, Opal Nonsense,Codon, Premature Stop,Codon, Premature Termination,Codons, Amber Nonsense,Codons, Nonsense,Codons, Ochre Nonsense,Codons, Opal Nonsense,Codons, Premature Stop,Codons, Premature Termination,Codons, Unassigned,Mutation, Amber Nonsense,Mutation, Ochre Nonsense,Mutation, Opal Nonsense,Mutations, Amber Nonsense,Mutations, Nonsense,Mutations, Ochre Nonsense,Mutations, Opal Nonsense,Nonsense Codon, Ochre,Nonsense Codon, Opal,Nonsense Codons,Nonsense Codons, Amber,Nonsense Codons, Ochre,Nonsense Codons, Opal,Nonsense Mutation, Amber,Nonsense Mutation, Ochre,Nonsense Mutation, Opal,Nonsense Mutations,Nonsense Mutations, Amber,Nonsense Mutations, Ochre,Nonsense Mutations, Opal,Ochre Nonsense Codons,Ochre Nonsense Mutations,Opal Nonsense Codons,Opal Nonsense Mutations,Premature Stop Codons,Premature Termination Codons,Stop Codon, Premature,Stop Codons, Premature,Termination Codon, Premature,Termination Codons, Premature,Unassigned Codons

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