Fluorescence in situ hybridization of TP53 for the detection of chromosome 17 abnormalities in myelodysplastic syndromes

Judit Sánchez-Castro, Víctor Marco-Betés, Xavier Gómez-Arbonés, Tomás Garciá-Cerecedo, Ricard López, Elisabeth Talavera, Sara Fernández-Ruiz, Vera Ademà, Isabel Marugan, Elisa Lunõ, Carmen Sanzo, Teresa Vallespí, Leonor Arenillas, Josefa Marco Buades, Ana Batlle, Ismael Bunõ, Mariá Luisa Martín Ramos, Beatriz Blázquez Rios, Rosa Collado Nieto, Ma Teresa VargasTeresa González Martínez, Guillermo Sanz, Francesc Solé

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Conventional G-banding cytogenetics (CC) detects chromosome 17 (chr17) abnormalities in 2% of patients with de novo myelodysplastic syndromes (MDS). We used CC and fluorescence in situ hybridization (FISH) (LSI p53/17p13.1) to assess deletion of 17p in 531 patients with de novo MDS from the Spanish Group of Hematological Cytogenetics. FISH detected-17 or 17p abnormalities in 13 cases (2.6%) in whom no 17p abnormalities were revealed by CC: 0.9% of patients with a normal karyotype, 0% in non-informative cytogenetics, 50% of patients with a chr17 abnormality without loss of 17p and 4.7% of cases with an abnormal karyotype not involving chr17. Our results suggest that applying FISH of 17p13 to identify the number of copies of the TP53 gene could be beneficial in patients with a complex karyotype.

Original languageEnglish (US)
Pages (from-to)3183-3188
Number of pages6
JournalLeukemia and Lymphoma
Volume56
Issue number11
DOIs
StatePublished - Nov 2 2015
Externally publishedYes

Keywords

  • chromosome 17
  • cytogenetics
  • FISH
  • Myelodysplastic syndromes

ASJC Scopus subject areas

  • Hematology
  • Oncology
  • Cancer Research

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