0000000000135055

AUTHOR

Claude Preudhomme

0000-0002-1267-9546

showing 3 related works from this author

Molecular predictors of response to decitabine in advanced chronic myelomonocytic leukemia: a phase 2 trial.

2011

Abstract Hydroxyurea is the standard therapy of chronic myelomonocytic leukemia (CMML) presenting with advanced myeloproliferative and/or myelodysplastic features. Response to hypomethylating agents has been reported in heterogeneous series of CMML. We conducted a phase 2 trial of decitabine (DAC) in 39 patients with advanced CMML defined according to a previous trial. Median number of DAC cycles was 10 (range, 1-24). Overall response rate was 38% with 4 complete responses (10%), 8 marrow responses (21%), and 3 stable diseases with hematologic improvement (8%). Eighteen patients (46%) demonstrated stable disease without hematologic improvement, and 6 (15%) progressed to acute leukemia. With…

OncologyNeuroblastoma RAS viral oncogene homologMalemedicine.medical_specialtyAntimetabolites AntineoplasticImmunologyDecitabineChronic myelomonocytic leukemiamedicine.disease_causeDecitabineBiochemistryhemic and lymphatic diseasesInternal medicinemedicineHumansSurvival analysisAgedAged 80 and overAcute leukemiaHematologybusiness.industryGene Expression Regulation LeukemicLeukemia Myelomonocytic ChronicCell BiologyHematologyMiddle Agedmedicine.diseasePrognosisSurvival AnalysisLeukemiaImmunologyMutationAzacitidineFemaleKRASbusinessmedicine.drugBlood
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TET2 mutation is an independent favorable prognostic factor in myelodysplastic syndromes (MDSs).

2009

Abstract Oncogenic pathways underlying in the development of myelodysplastic syndromes (MDS) remain poorly characterized, but mutations of the ten-eleven translocation 2 (TET2) gene are frequently observed. In the present work, we evaluated the prognostic impact of TET2 mutations in MDS. Frameshift, nonsense, missense mutations, or defects in gene structure were identified in 22 (22.9%) of 96 patients (95% confidence interval [CI], 14.5-31.3 patients). Mutated and unmutated patients did not significantly differ in initial clinical or hematologic parameters. The 5-year OS was 76.9% (95% CI, 49.2%-91.3%) in mutated versus 18.3% (95% CI, 4.2%-41.1%) in unmutated patients (P = .005). The 3-year…

Genetic MarkersMalemedicine.medical_specialtyPathologyImmunologyBiochemistryGastroenterologyDisease-Free SurvivalFrameshift mutationDioxygenasesPredictive Value of TestsRisk FactorsInternal medicineProto-Oncogene ProteinsmedicineMissense mutationHumansAgedAged 80 and overUnivariate analysisProportional hazards modelbusiness.industryMyelodysplastic syndromesHazard ratioCell BiologyHematologyMiddle Agedmedicine.diseaseConfidence intervalDNA-Binding ProteinsSurvival RateInternational Prognostic Scoring SystemMyelodysplastic SyndromesMutationFemalebusinessFollow-Up StudiesBlood
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LXR agonist treatment of blastic plasmacytoid dendritic cell neoplasm restores cholesterol efflux and triggers apoptosis

2016

International audience; Blastic plasmacytoid dendritic cell (PDC) neoplasm (BPDCN) is an aggressive hematological malignancy with a poor prognosis that derives from PDCs. No consensus for optimal treatment modalities is available today and the full characterization of this leukemia is still emerging. We identified here a BPDCN-specific transcriptomic profile when compared with those of acute myeloid leukemia and T-acute lymphoblastic leukemia, as well as the transcriptomic signature of primary PDCs. This BPDCN gene signature identified a dysregulation of genes involved in cholesterol homeostasis, some of them being liver X receptor (LXR) target genes. LXR agonist treatment of primary BPDCN …

0301 basic medicineMaleCellProliferationApoptosisExpressionPlasmacytoid dendritic cellPrecursor T-Cell Lymphoblastic Leukemia-LymphomaBiochemistryMice0302 clinical medicinepolycyclic compoundsSTAT5 Transcription Factor[ SDV.MHEP.HEM ] Life Sciences [q-bio]/Human health and pathology/HematologyATP Binding Cassette Transporter Subfamily G Member 1Liver X ReceptorsInhibitionMyeloid NeoplasiabiologyMyeloid leukemiafood and beveragesMyeloid-Leukemia[SDV.MHEP.HEM]Life Sciences [q-bio]/Human health and pathology/HematologyHematologyInterleukin-3 Receptor3. Good healthLeukemiamedicine.anatomical_structureCholesterol030220 oncology & carcinogenesisFemalelipids (amino acids peptides and proteins)In-VivoATP Binding Cassette Transporter 1ImmunologyActivationAntineoplastic Agentsdigestive system03 medical and health sciencesCell Line TumormedicineAnimalsHumansLiver X receptorProtein kinase BCell ProliferationCell growthCell BiologyDendritic Cellsmedicine.diseaseXenograft Model Antitumor Assays030104 developmental biologyProstate-Cancer CellsABCA1biology.proteinCancer researchDensity-Lipoprotein ReceptorInterleukin-3Proto-Oncogene Proteins c-akt
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