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Besbes S, Hamadou WS, Boulland ML, Youssef YB, Achour B, Regaieg H, Khelif A, Fest T, Soua Z. Minimal residual disease detection in Tunisian B-acute lymphoblastic leukemia based on immunoglobulin gene rearrangements. ACTA ACUST UNITED AC 2017; 50:e5426. [PMID: 28099581 PMCID: PMC5264541 DOI: 10.1590/1414-431x20165426] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 10/11/2016] [Indexed: 11/22/2022]
Abstract
IGH gene rearrangement and IGK-Kde gene deletion can be used as molecular markers for the assessment of B lineage acute lymphoblastic leukemia (B-ALL). Minimal residual disease detected based on those markers is currently the most reliable prognosis factor in B-ALL. The aim of this study was to use clonal IGH/IGK-Kde gene rearrangements to confirm B-ALL diagnosis and to evaluate the treatment outcome of Tunisian leukemic patients by monitoring the minimal residual disease (MRD) after induction chemotherapy. Seventeen consecutive newly diagnosed B-ALL patients were investigated by multiplex PCR assay and real time quantitative PCR according to BIOMED 2 conditions. The vast majority of clonal VH-JH rearrangements included VH3 gene. For IGK deletion, clonal VK1f/6-Kde recombinations were mainly identified. These rearrangements were quantified to follow-up seven B-ALL after induction using patient-specific ASO. Four patients had an undetectable level of MRD with a sensitivity of up to 10-5. This molecular approach allowed identification of prognosis risk group and adequate therapeutic decision. The IGK-Kde and IGH gene rearrangements might be used for diagnosis and MRD monitoring of B-ALL, introduced for the first time in Tunisian laboratories.
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Affiliation(s)
- S Besbes
- Research Unit 14 ES 19, Department of Biochemistry, Faculty of Medicine, University of Sousse, Sousse, Tunisia
| | - W S Hamadou
- Research Unit 14 ES 19, Department of Biochemistry, Faculty of Medicine, University of Sousse, Sousse, Tunisia
| | - M L Boulland
- Biological Hematology Department, Centre Hospitalier Universitaire Pontchaillou, Rennes, France
| | - Y B Youssef
- Research Unit 14 ES 19, Department of Biochemistry, Faculty of Medicine, University of Sousse, Sousse, Tunisia.,Clinical Hematology Department, Hospital F. Hached, Sousse, Tunisia
| | - B Achour
- Clinical Hematology Department, Hospital F. Hached, Sousse, Tunisia
| | - H Regaieg
- Research Unit 14 ES 19, Department of Biochemistry, Faculty of Medicine, University of Sousse, Sousse, Tunisia.,Clinical Hematology Department, Hospital F. Hached, Sousse, Tunisia
| | - A Khelif
- Research Unit 14 ES 19, Department of Biochemistry, Faculty of Medicine, University of Sousse, Sousse, Tunisia.,Clinical Hematology Department, Hospital F. Hached, Sousse, Tunisia
| | - T Fest
- Biological Hematology Department, Centre Hospitalier Universitaire Pontchaillou, Rennes, France
| | - Z Soua
- Research Unit 14 ES 19, Department of Biochemistry, Faculty of Medicine, University of Sousse, Sousse, Tunisia
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Hamadou WS, Abed RE, Besbes S, Bourdon V, Fabre A, Youssef YB, Laatiri MA, Eisinger F, Mari V, Gesta P, Dreyfus H, Bonadona V, Dugast C, Zattara H, Faivre L, Jemni SY, Noguchi T, Khélif A, Sobol H, Soua Z. Familial hematological malignancies: ASXL1 gene investigation. Clin Transl Oncol 2015; 18:385-90. [DOI: 10.1007/s12094-015-1379-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 08/05/2015] [Indexed: 10/23/2022]
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