A rare case of pediatric lipoma with t(9;12)(p22;q14) and evidence of HMGA2-NFIB gene fusion

Cancer Genet. 2017 Oct:216-217:100-104. doi: 10.1016/j.cancergen.2017.07.011. Epub 2017 Aug 9.

Abstract

Lipoma is a benign tumor, typically of adulthood, with characteristic cytogenetic findings, including rearrangement of 12q13-15; these rearrangements often lead to the fusion of the HMGA2 gene at this locus to the transcriptional regulatory domain of its fusion partner, resulting in neomorphic activity that presumably facilitates the neoplastic process. Herein, we report a rare case of pediatric lipoma with t(9;12)(p22;q14) and evidence of HMGA2-NFIB gene fusion in a 9 year-old boy. This case provides further evidence of the link between NFIB rearrangement and early-onset, deep-seated lipomatous tumors.

Keywords: FISH; HMGA2; NFIB; lipoma.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Child
  • Child, Preschool
  • Chromosomes, Human / genetics*
  • HMGA2 Protein / genetics*
  • Humans
  • Karyotyping
  • Lipoma / genetics*
  • Magnetic Resonance Imaging
  • Male
  • Middle Aged
  • NFI Transcription Factors / genetics*
  • Oncogene Proteins, Fusion / genetics*
  • Translocation, Genetic*

Substances

  • HMGA2 Protein
  • HMGA2-NFIB fusion protein, human
  • NFI Transcription Factors
  • Oncogene Proteins, Fusion