p210 BCR/ABL1 as a secondary change in a patient with acute myelomonocytic leukemia (M4Eo) with inv(16)

Int J Hematol. 2012 Dec;96(6):814-7. doi: 10.1007/s12185-012-1190-y. Epub 2012 Oct 11.

Abstract

t(9;22) as a secondary change of inv(16) is a rare chromosome aberration in de novo acute myeloid leukemia (AML). Here, we report the case of a 31-year-old man with this rare abnormality. Karyotypic analysis showed a complex chromosome aberration:46,XY,der(8)t(8;10)(p23;q25),der(10)t(8;10)t(10;16)(p13;q22),der(16)inv(16)(p13q22)t(10;16)[4] and 46,XY,idem,t(9;22)(q34;q11)[6]. Fluorescence in situ hybridization detected both the CBFB and the BCR/ABL1 rearrangements. CBFB/MYH11 (A type) and BCR/ABL1 (b3a2) fusion transcripts were both detected by real-time quantitative RT-PCR. The patient was treated with standard AML chemotherapy and autologous peripheral blood stem cell transplantation. He also received imatinib (400 mg/day) during the chemotherapy intervals and after transplantation. Molecular remission was achieved at the beginning of the third chemotherapy and he remained in remission until the last follow-up (22 months after diagnosis). To our knowledge, this is the first reported case of de novo AML in which has p210(BCR/ABL1) occurred as a secondary change of inv(16).

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use
  • Benzamides
  • Chromosome Inversion*
  • Chromosomes, Human, Pair 16 / genetics*
  • Chromosomes, Human, Pair 16 / ultrastructure
  • Combined Modality Therapy
  • Cytarabine / administration & dosage
  • Fusion Proteins, bcr-abl / genetics*
  • Humans
  • Idarubicin / administration & dosage
  • Imatinib Mesylate
  • In Situ Hybridization, Fluorescence
  • Leukemia, Myelomonocytic, Acute / drug therapy
  • Leukemia, Myelomonocytic, Acute / genetics*
  • Leukemia, Myelomonocytic, Acute / surgery
  • Male
  • Oncogene Proteins, Fusion / genetics
  • Peripheral Blood Stem Cell Transplantation
  • Philadelphia Chromosome
  • Piperazines / administration & dosage
  • Pyrimidines / administration & dosage
  • Remission Induction

Substances

  • Benzamides
  • CBFbeta-MYH11 fusion protein
  • Oncogene Proteins, Fusion
  • Piperazines
  • Pyrimidines
  • Cytarabine
  • Imatinib Mesylate
  • Fusion Proteins, bcr-abl
  • Idarubicin