High incidence and intraclonal heterogeneity of chromosome 11 aberrations in patients with newly diagnosed multiple myeloma detected by multiprobe interphase FISH
| Autor: | Marc S. Raab, Dirk Hose, Michaela Brough, Marion Moos, Friedrich W. Cremer, Claus R. Bartram, Hans Dieter Hager, Anke Moebus, Mutlu Kartal, Hartmut Goldschmidt, Frauke Bellos, Isabelle Buck, Jelena Bila, Anna Jauch |
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| Rok vydání: | 2005 |
| Předmět: |
Adult
Male Cancer Research Pathology medicine.medical_specialty Chromosomal translocation Biology Somatic evolution in cancer Translocation Genetic Genetic Heterogeneity Genetics medicine Humans Interphase Molecular Biology In Situ Hybridization Fluorescence Multiple myeloma Aged Chromosome Aberrations Chromosomes Human Pair 13 medicine.diagnostic_test Chromosomes Human Pair 11 Incidence Chromosome Middle Aged medicine.disease Molecular biology Clone Cells medicine.anatomical_structure Tetrasomy Female Bone marrow DNA Probes Multiple Myeloma Trisomy Fluorescence in situ hybridization |
| Zdroj: | Cancer Genetics and Cytogenetics. 161:116-124 |
| ISSN: | 0165-4608 |
| DOI: | 10.1016/j.cancergencyto.2005.02.015 |
| Popis: | In multiple myeloma, additional copies of chromosome 11 material, reported to confer an unfavorable prognosis, have been found in 20–45% of patients. To assess the incidence and extent of chromosome 11 aberrations, we performed interphase fluorescence in situ hybridization on CD138 + bone marrow plasma cells of 50 newly diagnosed myeloma patients, using seven locus-specific probes for chromosome 11, one for 13q14.3, and a probe set for translocation t(11;14). In 33 of 50 patients, chromosome 11 aberrations were found. Results indicated a marked intraclonal heterogeneity: in 13 patients, trisomy 11; in 10 patients, subclones with trisomy 11 and partial trisomies 11q coexisted; in 6 patients, only a partial trisomy 11q; and in 6 patients, a tetrasomy or partial tetrasomy 11. The coexistence of subclones with varying extent and copy numbers of chromosome 11 material indicates ongoing structural changes and clonal evolution. Hybridization results delineated 11q23 and 11q25 as the most frequently gained regions, which supports a relevant pathogenetic role of genes on 11q23 and 11q25. To confirm the high incidence of 11q23 gains, a further 50 patients (total n =100) were analyzed for 11q23 and 13q14.3. Myeloma with gains of 11q23 showed a low frequency of deletion 13q14.3 and may prove to be a distinct subgroup of this disease. |
| Databáze: | OpenAIRE |
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