Abnormalities of the long arm of chromosome 21 in 107 patients with hematopoietic disorders: a collaborative retrospective study of the Groupe Francais de Cytogenetique Hematologique
Jeandidier, E.; Dastugue, N.; Mugneret, F.et al.
2006 • In Cancer Genetics and Cytogenetics, 166 (1), p. 1-11
[en] Chromosome 21 is frequently rearranged in hematopoietic malignancies. In order to detect new chromosomal aberrations, the Groupe Francais de Cytogenetique Hematologique collected a series of 107 patients with various hematologic disorders and acquired structural abnormalities of the long arm of chromosome 21. The abnormalities were subclassified into 10 groups, according to the location of the 21q breakpoint and the type of abnormality. Band 21q22 was implicated in 72 patients (excluding duplications, triplications, and amplifications). The involvement of the RUNX1 gene was confirmed in 10 novel translocations, but the gene partners were not identified. Eleven novel translocations rearranging band 21q22 with hands 1q25, 2p21, 2q37, 3p21, 3p23, 4q31, 6p24-p25, 6p12, 7p15, 16p11, and 18q21 were detected. Rearrangements of band 21q11 and 21q21 were detected in six novel translocations with 5p15, 6p21, 15q21, 16p13, and 20q11 and with 1p33, 3q27, 5p14, 11q11, and 14q11, respectively. Duplications, triplications, amplifications, and isodicentric chromosomes were detected in eight, three, eight, and three patients, respectively. The present study shows both the wide distribution of the breakpoints on the long arm of chromosome 21 in hematopoietic malignancy and the diversity of the chromosomal rearrangements and the hematologic disorders involved. The findings invite further investigation of the 21q abnormalities to detect their associated molecular rearrangements. (c) 2006 Elsevier Inc. All rights reserved.
Disciplines :
Oncology Genetics & genetic processes
Author, co-author :
Jeandidier, E.
Dastugue, N.
Mugneret, F.
Lafage-Pochitaloff, M.
Mozziconacci, M. J.
Herens, Christian ; Centre Hospitalier Universitaire de Liège - CHU > PLAN COS
Abnormalities of the long arm of chromosome 21 in 107 patients with hematopoietic disorders: a collaborative retrospective study of the Groupe Francais de Cytogenetique Hematologique
Publication date :
01 April 2006
Journal title :
Cancer Genetics and Cytogenetics
ISSN :
0165-4608
eISSN :
1873-4456
Publisher :
Elsevier Science, New York, United States - New York
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