Cytogenetic and single nucleotide polymorphism array findings in soft tissue tumors in infants

Research output: Contribution to journalArticle

Abstract

Soft tissue tumors in children under one year of age (infants) are rare. The etiology is usually unknown, with external factors or congenital birth defects and hereditary syndromes being recognized in only a small proportion of the cases. We ascertained the cytogenetic findings in 16 infants from whom tumor tissue had been obtained during a 25-year period. In eight of them, single nucleotide polymorphism (SNP) array analyses could also be performed. No constitutional chromosome aberrations were detected, and assessment of clinical files did not reveal any congenital or later anatomical defects. Three tumors--one infantile fibrosarcoma, one embryonal rhabdomyosarcoma, and one angiomatoid fibrous histiocytoma (AFH)--had abnormal karyotypes. As the AFH had an exchange between chromosome arms 12p and 15q, additional fluorescence in situ hybridization and reverse transcription-polymerase chain reaction analyses were performed, unexpectedly revealing an ETV6/NTRK3 fusion. Three of the eight tumors, including the AFH with an abnormal karyotype, analyzed by SNP array showed aberrations (loss of heterozygosity or imbalances). The present series suggests that the addition of array-based technologies is valuable for detecting underlying pathogenetic mechanisms.

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Authors
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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Cancer and Oncology
  • Medical Genetics

Keywords

  • Age of Onset, Cytogenetic Analysis, Female, Fibrosarcoma, Humans, Infant, Infant, Newborn, Male, Microarray Analysis, Oncogene Proteins, Fusion, Polymorphism, Single Nucleotide, Proto-Oncogene Proteins c-ets, Receptor, trkC, Repressor Proteins, Retrospective Studies, Rhabdomyosarcoma, Embryonal, Soft Tissue Neoplasms, Journal Article, Research Support, Non-U.S. Gov't
Original languageEnglish
Pages (from-to)299-303
Number of pages5
JournalCancer Genetics
Volume206
Issue number7-8
Publication statusPublished - 2013 Aug 14
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Division of Clinical Genetics (013022003), Department of Orthopaedics (Lund) (013028000), Paediatrics (Lund) (013002000), Pathology, (Lund) (013030000)