Isochromosome 7p, i(7)(p10): A rare AML, myelodysplasia-related entity

Reza Nejati, Ryan Neumann-Domer, Zemin Liu, Lori Koslosky, Erin Neumann-Domer, Jianming Pei, Y. Lynn Wang, Joseph R. Testa

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Abstract

We describe genomic findings in an AML case with isochromosome 7p, i(7)(p10), in which SNP array analysis uncovered an additional 7.07-Mb 20q deletion not detected by karyotyping. Several AML cases with i(7)(p10) as an isolated cytogenetic finding have been previously reported. Based on consequent loss of 7q, we propose that AML with i(7)(p10) represents a distinct entity belonging in the WHO group -7/7q-, which represents one of the genetic abnormalities defining AML, myelodysplasia-related. Additionally, the focal del(20q) identified here adds support for a specific common region of deletion in 20q in myeloid malignancies, implicating a small number of candidate genes.

Original languageEnglish
Article number100387
Pages (from-to)100387
JournalLeukemia Research Reports
Volume20
DOIs
StatePublished - Jan 2023

Keywords

  • 20q deletion
  • 7q deletion
  • Acute myeloid leukemia
  • Chromosome microarray analysis
  • Mutations
  • i(7p)

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