Chronic lymphocytic leukemia with del13q14 as the sole abnormality: Dynamic prognostic estimate by interphase-FISH

Research output: Contribution to journalArticle

Abstract

This study analyzed 140 patients with isolated del13q14 on interphase FISH (I-FISH), to identify subsets with a different progression risk and to assess the acquisition of additional chromosomal abnormalities (clonal evolution) in treatment-naïve del13q14 patients. A monoallelic deletion (del13qx1) was detected in 123 cases (88%), a biallelic deletion (del13qx2) in eight and a mosaic of monoallelic and biallelic deletions (del13qx1/del13qx2) in nine. In 33% of cases, deletion encompassed the Rb1 locus The median percentage of abnormal nuclei was 50% (15%-96%), and it was higher in patients with a biallelic/mosaic pattern in comparison with patients with monoallelic deletion. Sixty two patients (44%) have been treated; 5-year treatment free survival rate was 56% and the median treatment free survival was 65months. The baseline percentage of deleted nuclei, as a continuous variable, was related to progression (HR: 1.02; p=0.001). According to deletion burden, three groups were identified: 64 cases (46%) had

Original languageEnglish
Pages (from-to)136-142
Number of pages7
JournalHematological Oncology
Volume31
Issue number3
DOIs
Publication statusPublished - Sep 2013

Keywords

  • Chronic lymphocytic leukemia
  • Del13q14
  • Interphase-FISH
  • Prognosis

ASJC Scopus subject areas

  • Hematology
  • Oncology
  • Cancer Research

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