Phenotypic and genotypic alterations characterize patients bearing plasma cell dyscrasias with a high M-component
| Autor: | I. Venturo, A. W. Tong, A. Mosiello, F. Alvino, C. Greco, F. Ameglio, M. Giampaolo, Cianciulli Am, G. Monte, G. M. Gandolfo |
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| Rok vydání: | 1999 |
| Předmět: |
Adult
Genetic Markers Male Genotype CD3 Genes myc Plasma cell dyscrasia Plasma cell Biology Monoclonal Gammopathy of Undetermined Significance Group A Dyscrasia Immunophenotyping Malignant transformation Transformation Genetic Predictive Value of Tests medicine Humans Multiple myeloma Aged Aged 80 and over Oncogene Original Articles DNA Neoplasm Cell Biology General Medicine Middle Aged Prognosis medicine.disease Blotting Southern Phenotype medicine.anatomical_structure Immunology Disease Progression biology.protein Female Multiple Myeloma Biomarkers Paraproteins |
| Zdroj: | Cell Proliferation. 32:231-238 |
| ISSN: | 0960-7722 |
| DOI: | 10.1046/j.1365-2184.1999.3240231.x |
| Popis: | As at present only a long‐term follow‐up can fully determine whether monoclonal gammapathies of undetermined significance (MGUS) will evolve into multiple myeloma (MM), this study attempted to identify other variables connected with the amount of monoclonal component (MC), generally considered as the most reliable marker of malignant evolution. Thirty‐four MGUS subjects showing a high MC (≥ 15.0 g/l) but without clinical evidence of MM (MGUS group b), were characterized for their phenotypic and genotypic profile by comparing them either with 40 MM patients or with 24 subjects affected by a benign form of monoclonal gammapathy (MGUS group a) according to the standard criteria. In addition to the usual laboratory markers, the levels of expression of a panel of CD membrane subsets were measured on B and T lymphocytes. Also, the serum level of the p53 mutant protein and the structural alterations of the c‐myc oncogene were evaluated. The results show that for MGUS group b patients, an increased M‐protein was accompanied by significantly increased levels of peripheral blood CD3(+) T cells and oncogenetic aberrations in c‐myc. Since a high serum MC level seems to indicate a greater likelihood of malignant transformation for MGUS patients, these findings suggest that this relationship may be a result of the concomitant alterations observed at a phenotypic and genotypic level. Such alterations may be potentially useful as surrogate markers for the transition of benign to malignant (MM) plasma cell dyscrasia. |
| Databáze: | OpenAIRE |
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