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Unbalanced 1q whole-arm translocation resulting in der(14)t(1;14)(q11–12;p11) in myelodysplastic syndrome

Fogu, Giuseppa and Campus, Paola Maria and Cambosu, Francesca and Moro, Maria Antonietta Serafina and Sanna, Raimonda and Fozza, Claudio and Nieddu, Rosa Maria and Longinotti, Maurizio Roberto and Montella, Andrea Costantino Mario (2012) Unbalanced 1q whole-arm translocation resulting in der(14)t(1;14)(q11–12;p11) in myelodysplastic syndrome. Cytogenetic and genome research, Vol. 136 (4), p. 256-263. ISSN 1424-8581. eISSN 1424-859X. Article.

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DOI: 10.1159/000338437

Abstract

Unbalanced whole-arm translocations (WATs) of the long arm of chromosome 1, resulting in complete trisomy 1q, are chromosomal abnormalities detectable in both solid tumors and hematologic neoplasms. Among the WATs of 1q to acrocentric chromosomes, a few patients with der(1;15) described as a dicentric chromosome have been reported so far, whereas cases of der(1;14) are much rarer. We report on a case of der(1;14) detected as single anomaly in a patient with myelodysplastic syndrome. The aim of our work was to investigate the breakpoints of the (1;14) translocation leading to the der(1;14). Fluorescence in situ hybridization (FISH) experiments have been performed on chromosome preparations from bone marrow aspirate, using specific centromeric probes of both chromosomes, as well as a probe mapping to 1q11 band. FISH results showed that in our patient the derivative chromosome was monocentric with a unique centromere derived from chromosome 14. The breakpoints of the translocation were located in the short arm of chromosome 14 and in the long arm of chromosome 1, between the alphoid D1Z5 and the satellite II domains. The 1q breakpoint was within the pericentromeric region of chromosome 1, which is notoriously an unstable chromosomal region, involved in different chromosomal rearrangements.

Item Type:Article
ID Code:10707
Status:Published
Refereed:Yes
Uncontrolled Keywords:Centromere, FISH, Myelodysplasia, 1q whole-arm translocation
Subjects:Area 05 - Scienze biologiche > BIO/18 Genetica
Area 06 - Scienze mediche > MED/15 Malattie del sangue
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > AOU -Azienda Ospedaliero Universitaria, Sassari
001 Università di Sassari > 03 Istituti > Ematologia
001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze Biomediche
Publisher:Karger
ISSN:1424-8581
eISSN:1424-859X
Deposited On:28 Jan 2015 11:01

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