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Start Over Descriptor "MESH : Leukemia-Lymphoma, Adult T-Cell" Topic 030220 oncology & carcinogenesis
3 results on '"MESH : Leukemia-Lymphoma, Adult T-Cell"'

1. HOX11L2/TLX3 is transcriptionally activated through T-cell regulatory elements downstream of BCL11B as a result of the t(5;14)(q35;q32)

Author

Virginie Penard-Lacronique, Isabelle André-Schmutz, Xin-Ying Su, Roland Berger, Paola Ballerini, Claudie Lemercier, Véronique Della-Valle, Francine Mugneret, Serge Romana, Michel Lessard, Isabelle Radford-Weiss, Marina Lafage-Pochitaloff, Olivier Bernard, Génétique des hémopathies humaines ( EMI 210 ), Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Developpement Normal et Pathologique du Système Immunitaire, Contrôle moléculaire de la réponse immune specifique, Université Joseph Fourier - Grenoble 1 ( UJF ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Laboratoire de Cytogénétique, Assistance publique - Hôpitaux de Paris (AP-HP)-Université Paris Descartes - Paris 5 ( UPD5 ) -CHU Necker - Enfants Malades [AP-HP], Service d'Hématologie Biologique, Assistance publique - Hôpitaux de Paris (AP-HP), Laboratoire d'Hématologie, CHU Strasbourg, Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Laboratoire de cytogénétique (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Génétique des hémopathies humaines (EMI 210), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Descartes - Paris 5 (UPD5)-CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Université Paris Descartes - Paris 5 (UPD5)-CHU Necker - Enfants Malades [AP-HP], and Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)

Subjects
Oncogene Proteins, Fusion, Transcription, Genetic, T-Lymphocytes, BCL11B, Chromosomal translocation, MESH : Promoter Regions, Genetic, MESH : Oncogene Proteins, Fusion, Biochemistry, Jurkat cells, Translocation, Genetic, Jurkat Cells, MESH : Chromosomes, Human, Pair 5, 0302 clinical medicine, MESH : Translocation, Genetic, Transcription (biology), MESH: Jurkat Cells, Leukemia-Lymphoma, Adult T-Cell, MESH: Leukemia-Lymphoma, Adult T-Cell, MESH : Homeodomain Proteins, Promoter Regions, Genetic, MESH : Jurkat Cells, Oncogene Proteins, 0303 health sciences, MESH : Chromosomes, Human, Pair 14, MESH : Oncogene Proteins, MESH : Tumor Suppressor Proteins, Cell Differentiation, Hematology, Transfection, MESH: Translocation, Genetic, DNA-Binding Proteins, medicine.anatomical_structure, MESH: Repressor Proteins, 030220 oncology & carcinogenesis, Chromosomes, Human, Pair 5, MESH : DNA-Binding Proteins, MESH : Repressor Proteins, MESH : Cell Differentiation, MESH: Cell Differentiation, MESH: Chromosomes, Human, Pair 5, T cell, Immunology, Biology, 03 medical and health sciences, MESH: Oncogene Proteins, MESH: Promoter Regions, Genetic, MESH: Homeodomain Proteins, medicine, Humans, MESH: Tumor Suppressor Proteins, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, [ SDV.BBM ] Life Sciences [q-bio]/Biochemistry, Molecular Biology, 030304 developmental biology, Chromosomes, Human, Pair 14, Homeodomain Proteins, MESH : T-Lymphocytes, MESH: Humans, Recombinase activity, Tumor Suppressor Proteins, MESH: Transcription, Genetic, MESH : Humans, MESH : Transcription, Genetic, Cell Biology, T lymphocyte, Molecular biology, MESH : Leukemia-Lymphoma, Adult T-Cell, Repressor Proteins, MESH: T-Lymphocytes, MESH: Chromosomes, Human, Pair 14, MESH: DNA-Binding Proteins, MESH: Oncogene Proteins, Fusion
Abstract

International audience; The t(5;14)(q35;q32) chromosomal translocation is specifically observed in up to 20% of childhood T-cell acute lymphoblastic leukemia (T-ALL). It affects the BCL11B/CTIP2 locus on chromosome 14 and the RANBP17-TLX3/HOX11L2 region on chromosome 5. It leads to ectopic activation of TLX3/HOX11L2. To investigate the reasons of the association between t(5;14) and T-ALL, we isolated the translocation breakpoints in 8 t(5;14) patients. Sequence analyses did not involve recombinase activity in the genesis of the translocation. We used DNAse1 hypersensitive experiments to locate transcriptional regulatory elements downstream of BCL11B. By transient transfection experiments, 2 of the 6 regions demonstrated cis-activation properties in T cells and were also effective on the TLX3 promoter. Our data indicate that the basis of the specific association between t(5;14) and T-ALL lies on the juxtaposition of TLX3 to long-range cis-activating regions active during T-cell differentiation.

Published
2006
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2. Pediatric-inspired intensified therapy of adult T-ALL reveals the favorable outcome of NOTCH1/FBXW7 mutations, but not of low ERG/BAALC expression: a GRAALL study

Author

Ben Abdelali, Raouf, Asnafi, Vahid, Leguay, Thibaut, Boissel, Nicolas, Buzyn, Agnès, Chevallier, Patrice, Thomas, Xavier, Lepretre, Stephane, Huguet, Françoise, Vey, Norbert, Escoffre-Barbe, Martine, Tavernier, Emmanuelle, Reman, Oumedaly, Fegueux, Nathalie, Turlure, Pascal, Rousselot, Philippe, Cahn, Jean-Yves, Lheritier, Veronique, Chalandon, Yves, Béné, Marie-Christine, Macintyre, Elizabeth, Dombret, Hervé, Ifrah, Norbert, Renseigné, Non, Université Paris Descartes - Paris 5 (UPD5), Institut Cochin (UMR_S567 / UMR 8104), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), equipe 14, Centre de Recherche en Cancérologie de Lyon (UNICANCER/CRCL), Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Hôpital Edouard Herriot [CHU - HCL], Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), Groupe d'étude des proliférations lymphoïdes (GPL), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire d'Hématologie [Purpan], Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse], Hematology (IPC-Marseille), Service d'hématologie clinique, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou, Service d'hématologie et oncologie médicale, Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Lapeyronie-Université de Montpellier (UM), Service d'Hématologie clinique et thérapie cellulaire [CHU Limoges], CHU Limoges, Hematology, Université Joseph Fourier - Grenoble 1 (UJF)-CHU Grenoble, Service d'Immunologie [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Service hématologie, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Lymphocyte et cancer, IFR105-Institut National de la Santé et de la Recherche Médicale (INSERM), Service d'hématologie clinique [Avicenne], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris 13 (UP13)-Hôpital Avicenne [AP-HP], Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Hôpital Edouard Herriot [CHU - HCL], Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU), Hôpital Lapeyronie-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université Montpellier 1 (UM1)-Université de Montpellier (UM), Université Paris Descartes - Paris 5 ( UPD5 ), Institut Cochin ( UMR_S567 / UMR 8104 ), Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Recherche en Cancérologie de Lyon ( CRCL ), Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ) -Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ) -Hôpital Edouard Herriot [CHU - HCL], Hospices Civils de Lyon ( HCL ) -Hospices Civils de Lyon ( HCL ), Groupe d'étude des proliférations lymphoïdes ( GPL ), Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Université Toulouse III - Paul Sabatier ( UPS ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Hôpital Pontchaillou, Université Montpellier 1 ( UM1 ) -Centre Hospitalier Régional Universitaire [Montpellier] ( CHRU Montpellier ) -Hôpital Lapeyronie, Université Joseph Fourier - Grenoble 1 ( UJF ) -CHU Grenoble, Centre Hospitalier Régional Universitaire de Nancy ( CHRU Nancy ), Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Necker - Enfants Malades [AP-HP], IFR105-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Université Paris 13 ( UP13 ) -Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Avicenne, Cytokines, hématopoïèse et réponse immune (CHRI), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service Hématologie - IUCT-Oncopole [CHU Toulouse], Pôle Biologie [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Pôle IUCT [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Université de Rennes (UR)-Hôpital Pontchaillou, Université Paris 13 (UP13)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Avicenne [AP-HP], Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Descartes - Paris 5 (UPD5), Centre de Recherche en Cancérologie de Lyon (CRCL), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Necker - Enfants Malades [AP-HP], Université Paris 13 (UP13)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Avicenne, and Université Paris Descartes - Paris 5 (UPD5) - Institut National de la Santé et de la Recherche Médicale (INSERM) - Centre National de la Recherche Scientifique (CNRS)

Subjects
Oncology, Male, MESH : F-Box Proteins, MESH : Prospective Studies, Cell Cycle Proteins, MESH: Receptor, Notch1, Biochemistry, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, 0302 clinical medicine, MESH : Cell Cycle Proteins, Neoplasm Proteins/genetics, MESH : Child, Clinical Protocols, MESH: Child, Mutational status, Favorable outcome, Prospective Studies, MESH: Leukemia-Lymphoma, Adult T-Cell, Receptor, Notch1, Child, ComputingMilieux_MISCELLANEOUS, MESH: Treatment Outcome, ddc:616, 0303 health sciences, Mutation, MESH : Trans-Activators, MESH: Middle Aged, Prognosis, Neoplasm Proteins, MESH: Young Adult, 030220 oncology & carcinogenesis, F-Box Proteins/genetics, Erg, medicine.medical_specialty, MESH: Gene Expression, Immunology, MESH : Young Adult, Disease-Free Survival, MESH: Prognosis, 03 medical and health sciences, MESH : Neoplasm Proteins, MESH: Cell Cycle Proteins, MESH : Adolescent, Humans, MESH : Middle Aged, Ubiquitin-Protein Ligases/genetics, MESH : Predictive Value of Tests, MESH : Clinical Protocols, MESH: Kaplan-Meier Estimate, Cell Cycle Proteins/genetics, MESH: Adolescent, Receptor, Notch1/genetics, MESH: Humans, F-Box Proteins, MESH : Humans, MESH: Adult, Leukemia-Lymphoma, Adult T-Cell/classification/drug therapy/genetics, MESH: Ubiquitin-Protein Ligases, MESH : Leukemia-Lymphoma, Adult T-Cell, MESH : Gene Expression, MESH: Disease-Free Survival, Adult Acute Lymphoblastic Leukemia, MESH : Ubiquitin-Protein Ligases, Carcinogenesis, MESH: Female, MESH: Neoplasm Proteins, Multivariate analysis, F-Box-WD Repeat-Containing Protein 7, Gene Expression, Kaplan-Meier Estimate, medicine.disease_cause, Bioinformatics, MESH: Clinical Protocols, Leukemia-Lymphoma, Adult T-Cell, MESH : Female, BAALC, MESH : Prognosis, MESH : Receptor, Notch1, Hematology, MESH : Adult, Middle Aged, MESH: Predictive Value of Tests, Treatment Outcome, MESH : Disease-Free Survival, Female, MESH : Mutation, Adult, MESH: Mutation, Adolescent, MESH: Trans-Activators, MESH : Male, Ubiquitin-Protein Ligases, MESH: F-Box Proteins, [SDV.CAN]Life Sciences [q-bio]/Cancer, MESH : Treatment Outcome, Trans-Activators/genetics, MESH : Kaplan-Meier Estimate, Young Adult, Transcriptional Regulator ERG, Predictive Value of Tests, Internal medicine, medicine, 030304 developmental biology, business.industry, Cell Biology, MESH: Male, MESH: Prospective Studies, Trans-Activators, business
Abstract

Despite recent progress in the understanding of acute lymphoblastic leukemia (T-ALL) oncogenesis, few markers are sufficiently frequent in large subgroups to allow their use in therapeutic stratification. Low ERG and BAALC expression (E/Blow) and NOTCH1/FBXW7 (N/F) mutations have been proposed as powerful prognostic markers in large cohorts of adult T-ALL. We therefore compared the predictive prognostic value of N/F mutations versus E/Blow in 232 adult T-ALLs enrolled in the LALA-94 and Group for Research on Adult Acute Lymphoblastic Leukemia (GRAALL) protocols. The outcome of T-ALLs treated in the pediatric-inspired GRAALL trials was significantly superior to the LALA-94 trial. Overall, 43% and 69% of adult T-ALL patients were classified as E/Blow and N/F mutated, respectively. Strikingly, the good prognosis of N/F mutated patients was stronger in more intensively treated, pediatric-inspired GRAALL patients. The E/B expression level did not influence the prognosis in any subgroup. N/F mutation status and the GRAALL trial were the only 2 independent factors that correlated with longer overall survival by multivariate analysis. This study demonstrates that the N/F mutational status and treatment protocol are major outcome determinants for adults with T-ALL, the benefit of pediatric inspired protocols being essentially restricted to the N/F mutated subgroup.

Published
2011
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3. Impact of genotype on survival of children with T-cell acute lymphoblastic leukemia treated according to the French protocol FRALLE-93: the effect of TLX3/HOX11L2 gene expression on outcome

Author

André Baruchel, Yves Perel, Anne Hagemejier, Guy Leverger, Judith Landman-Parker, Paola Ballerini, Virginie Gandemer, François Sigaux, Gérard Michel, Claudine Schmitt, Vahid Asnafi, Jean Michel Cayuela, Sylvie Fasola, Marie Françoise Auclerc, Luc Douay, Thierry Leblanc, Myriam Labopin, CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Service d'hématologie pédiatrique, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7)-Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Laboratoire d'hématologie, Service d'immuno-hématologie pédiatrique [CHU Necker], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], CEREST-TC [CHU Saint-Antoine], Université Pierre et Marie Curie - Paris 6 (UPMC)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Service d'onco-hématologie pédiatrique, hôpital Sud, Service d'hématologie pédiatrique et oncologie, CHU Bordeaux [Bordeaux]-Hôpital Pellegrin, Université de la Méditerranée - Aix-Marseille 2-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE), Service d'hématologie, Service d'oncologie et hématologie, Hôpital d'enfants, Department of Human Genetics, Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), supported by Chugai France (Dr. Thierry Guillot) and SFCE (Société Française des Cancers de l'Enfant)., Service d'hématologie-immunologie-oncologie pédiatrique, Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP)-Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris]-Université Paris Diderot - Paris 7 ( UPD7 ), Assistance publique - Hôpitaux de Paris (AP-HP)-Université Paris Diderot - Paris 7 ( UPD7 ) -Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Necker - Enfants Malades [AP-HP], CHU Saint-Antoine [APHP]-Assistance publique - Hôpitaux de Paris (AP-HP)-Université Pierre et Marie Curie - Paris 6 ( UPMC ), Hôpital Sud, Université de la Méditerranée - Aix-Marseille 2-Assistance Publique - Hôpitaux de Marseille ( APHM ) - Hôpital de la Timone [CHU - APHM] ( TIMONE ), Catholic University of Leuven ( KU Leuven ), Service d'hématologie-immunologie-oncologie pédiatrique [CHU Trousseau], Université Pierre et Marie Curie - Paris 6 (UPMC)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Trousseau [APHP], Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7), CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Université Pierre et Marie Curie - Paris 6 (UPMC), and De Villemeur, Hervé

Subjects
[SDV.MHEP.HEM] Life Sciences [q-bio]/Human health and pathology/Hematology, Male, Oncology, Time Factors, Transcription, Genetic, MESH : Genotype, MESH : Child, Preschool, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, MESH: Genotype, 0302 clinical medicine, MESH : Child, hemic and lymphatic diseases, MESH: Child, Gene expression, Genotype, MESH : Precursor Cell Lymphoblastic Leukemia-Lymphoma, Leukemia-Lymphoma, Adult T-Cell, [ SDV.MHEP.HEM ] Life Sciences [q-bio]/Human health and pathology/Hematology, Medicine, MESH : Female, MESH : Homeodomain Proteins, MESH: Leukemia-Lymphoma, Adult T-Cell, Child, Regulation of gene expression, 0303 health sciences, MESH : Prognosis, Hematology, Hazard ratio, MESH : Infant, [SDV.MHEP.HEM]Life Sciences [q-bio]/Human health and pathology/Hematology, MESH: Follow-Up Studies, MESH: Gene Expression Regulation, Neoplastic, Precursor Cell Lymphoblastic Leukemia-Lymphoma, MESH : Adult, Prognosis, MESH : Survival Rate, MESH: Infant, 3. Good health, Gene Expression Regulation, Neoplastic, Survival Rate, NUP214-ABL1, Child, Preschool, 030220 oncology & carcinogenesis, outcome, Female, France, TLX3/HOX11L2, MESH : Time Factors, Adult, medicine.medical_specialty, Adolescent, MESH: Survival Rate, MESH : Gene Expression Regulation, Neoplastic, MESH : Male, [SDV.CAN]Life Sciences [q-bio]/Cancer, MESH: Prognosis, 03 medical and health sciences, [SDV.CAN] Life Sciences [q-bio]/Cancer, MESH : Adolescent, Internal medicine, MESH: Homeodomain Proteins, Humans, MESH : France, Survival rate, 030304 developmental biology, Homeodomain Proteins, MESH: Adolescent, MESH: Precursor Cell Lymphoblastic Leukemia-Lymphoma, MESH: Humans, business.industry, MESH: Transcription, Genetic, MESH : Humans, MESH: Time Factors, MESH: Child, Preschool, Infant, MESH : Transcription, Genetic, childhood T-cell acute lymphoblastic leukemia, MESH : Follow-Up Studies, MESH: Adult, MESH : Leukemia-Lymphoma, Adult T-Cell, MESH: Male, MESH: France, El Niño, Fusion transcript, Immunology, SIL-TAL1, business, MESH: Female, Follow-Up Studies
Abstract

International audience; BACKGROUND: The prognostic value of the ectopic activation of TLX3 gene expression, a major oncogenetic event associated with pediatric T-cell acute lymphoblastic leukemia, is controversial. Likewise, the frequency and the prognostic significance in pediatric T-cell acute lymphoblastic leukemia of the newly characterized NUP214-ABL1 fusion transcript is not yet clear. DESIGN AND METHODS: Two hundred children with T-cell acute lymphoblastic leukemia were treated in the French FRALLE-93 study from 1993 to 1999. The expression of TLX3, TLX1 and SILTAL1 genes was analyzed in samples from 92 patients by real-time quantitative reverse transcriptase polymerase chain reaction. Most of these samples were further studied for NUP214-ABL1 and CALM-AF10 fusion transcripts. RESULTS: The median follow-up was 7.9 years. At 5 years the overall survival (+/- standard deviation, %) was 62 (+/-3%) and leukemia-free survival was 58 (+/-3%). Patients with T-cell acute lymphoblastic leukemia positive for TLX3 had a poorer survival compared to those with T-ALL negative for TLX3 (overall survival: 45+/-11% vs. 57+/-5%, p=0.049). In multivariate analysis, TLX3 expression was an independent adverse risk factor predicting relapse with a hazard ratio of 2.44 (p=0.017) and an overall survival with a hazard ratio of 3.7 (p=0.001). NUP214-ABL1 was expressed in 16.6% of patients with TLX3-positive T-ALL (3 of 18); all of the patients with this association died before completion of the treatment. SILTAL expression did not significantly affect the prognosis of patients with T-cell acute lymphoblastic leukemia. Only three of 92 patients expressed the TLX1 gene and all three are alive. CONCLUSIONS: TLX3 gene expression is an independent risk factor predicting poor survival in childhood T-cell acute lymphoblastic leukemia. When co-expressed with TLX3, NUP214-ABL1 transcripts may increase the risk of poor survival.

Published
2008
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