284 results on '"Rauzy, Odile"'
Search Results
252. Immune checkpoint inhibitor-related acquired amegakaryocytosis thrombocytopenia: a case report and literature review.
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Rivet V, Sibaud V, Dion J, Volosov T, Biteau M, Pastissier A, Delavigne K, Cougoul P, Rauzy O, and Comont T
- Abstract
Introduction: Immune checkpoint inhibitors (ICIs) are used in several advanced malignancies and may cause various immune-related adverse events (irAEs). Among them, hematological irAEs are less described. Acquired amegakaryocytic thrombocytopenia (AAT) is a rare immune hematologic disorder characterized by severe thrombocytopenia and complete absence of megakaryocytes in bone marrow., Case Presentation: Herein, we present the case of a patient in their 40s with metastatic melanoma who developed an AAT after 12 cycles of nivolumab (anti-PD1). His platelet count decreased by ≤5 × 10
9 /l without other cytopenia. Bone marrow biopsy showed normal cellularity with a complete absence of megakaryocyte and T-CD8+ lymphocyte infiltration. Given the failure of systemic steroids, eltrombopag was started, an oral thrombopoietin receptor agonist (TPO-RA), and his platelet count subsequently increased with complete response., Discussion: Four other cases are described on literature with the same features than non-ICI-related AAT. All cases occurred after anti-PD/PD-L1 treatment with a median onset of 5 weeks. The presentation of our case is quite different with delayed cytopenia. Both ciclosporin and TPO-RA seem to be efficient therapies., Conclusion: TPO-RA could be preferred in oncologic patients, but safety data are still missing to define clear guidelines for immune-related AAT management., Competing Interests: Author TC reports board, funding research, consulting, and hospitality from Novartis. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Rivet, Sibaud, Dion, Volosov, Biteau, Pastissier, Delavigne, Cougoul, Rauzy and Comont.)- Published
- 2024
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253. Sabatolimab plus hypomethylating agents in previously untreated patients with higher-risk myelodysplastic syndromes (STIMULUS-MDS1): a randomised, double-blind, placebo-controlled, phase 2 trial.
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Zeidan AM, Ando K, Rauzy O, Turgut M, Wang MC, Cairoli R, Hou HA, Kwong YL, Arnan M, Meers S, Pullarkat V, Santini V, Malek K, Kiertsman F, Niolat J, Ramos PM, Menssen HD, Fenaux P, Miyazaki Y, and Platzbecker U
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- Adult, Humans, Male, Adolescent, Aged, Female, Azacitidine adverse effects, Progression-Free Survival, Proportional Hazards Models, Double-Blind Method, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Thrombocytopenia drug therapy, Myelodysplastic Syndromes drug therapy, Myelodysplastic Syndromes etiology
- Abstract
Background: Sabatolimab is an immunotherapy targeting T-cell immunoglobulin domain and mucin domain-3 (TIM-3), an immuno-myeloid regulator expressed on immune cells and leukaemic stem cells. In this trial, we compared the efficacy and safety of sabatolimab plus hypomethylating agent with placebo plus hypomethylating agents in previously untreated patients with higher-risk myelodysplastic syndromes., Methods: STIMULUS-MDS1 was a multicentre, randomised, double-blind, placebo-controlled, phase 2 study done at 54 investigational sites in 17 countries. Adult patients (aged ≥18 years) with intermediate-risk, high-risk, and very high-risk myelodysplastic syndromes (according to Revised International Prognostic Scoring System criteria) who had not received previous treatment were included. Patients were randomly assigned (1:1) to intravenous sabatolimab (400 mg on day 8 and 22) or placebo plus a hypomethylating agent (intravenous decitabine 20 mg/m
2 on day 1-5 or intravenous or subcutaneous azacitidine 75 mg/m2 on day 1-7 or day 1-5 and day 8 and 9) every 28 days until treatment discontinuation. The two primary endpoints were complete response rate and progression-free survival, assessed in the full analysis set, which included all randomly assigned patients. Complete response was analysed, as prespecified, 7 months after the last patient was randomly assigned. All other analyses presented, including progression-free survival, were done at the final data cutoff prespecified via a protocol amendment on Sept 2, 2021. Safety was assessed in in all patients who received at least one dose of study treatment. This study is registered with ClinicalTrials.gov, NCT03946670, and is ongoing., Findings: Between July 29, 2019, and Aug 10, 2020, 127 patients were randomly assigned to sabatolimab plus a hypomethylating agent group (sabatolimab group; n=65) or placebo plus a hypomethylating agent (placebo group; n=62). The median age of participants was 73 years (IQR 69-77), of whom 86 (68%) of 127 patients were male and 77 (61%) were White. The primary endpoints were not met. Complete response (cutoff date of March 10, 2021) was achieved in 14 (22%; 95% CI 12·3-33·5) of 65 patients in the sabatolimab group vs 11 (18%; 9·2-29·5) of 62 patients in the placebo group (p=0·77). At the cutoff date of the final analysis (March 1, 2022), median follow-up for progression-free survival was 17·8 months (IQR 16·6-19·4) in the sabatolimab group and 19·2 months (17·7-22·3) in the placebo group, and the median progression-free survival was 11·1 months (95% CI 7·6-17·6) in the sabatolimab group vs 8·5 months (6·9-11·3) in the placebo group (hazard ratio 0·75 [95% CI 0·48-1·17]; p=0·1022). The most common adverse events of any grade were neutropenia (35 [56%] of 62 patients in the sabatolimab group vs 43 [68%] of 63 patients in the placebo group), thrombocytopenia (30 [48%] vs 32 [51%]), constipation (29 [47%] vs 24 [38%]), diarrhoea (27 [44%] vs 14 [22%]), anaemia (22 [35%] vs 34 [54%]), febrile neutropenia (22 [35%] vs 15 [24%]), and leukopenia (15 [24%] vs 20 [32%]). One patient developed a serious potential treatment-related immune-mediated adverse event in the sabatolimab group. There was one treatment-related death in the sabatolimab group due to pneumonitis., Interpretation: The addition of sabatolimab to hypomethylating agents in this study did not result in a significant improvement in complete response rates or progression-free survival. Sabatolimab had a manageable safety in most patients with higher-risk myelodysplastic syndromes. A randomised phase 3 trial is ongoing to assess the potential benefit of sabatolimab plus azacitidine on overall survival in this setting., Funding: Novartis Pharmaceuticals., Competing Interests: Declaration of interests AZ is a Leukemia and Lymphoma Society Scholar in clinical research; reports research grants (to their institution) from Celgene/Bristol Myers Squibb, AbbVie, Astex, Pfizer, Medimmune/AstraZeneca, Boehringer-Ingelheim, Cardiff Oncology, Incyte, Takeda, Novartis, Aprea, and ADC Therapeutics; reports fees for participation on advisory board and consultancy, or honoraria from AbbVie, Otsuka, Pfizer, Celgene/Bristol Myers Squibb, Jazz, Incyte, Agios, Boehringer-Ingelheim, Novartis, Acceleron, Astellas, Daiichi Sankyo, Cardinal Health, Taiho, Seattle Genetics, BeyondSpring, Cardiff Oncology, Takeda, Ionis, Amgen, Janssen, Genentech, Epizyme, Syndax, Gilead, Kura, Chiesi, ALX Oncology, BioCryst, Notable, Orum, Mendus, Foran, Syros, and Tyme; participation on clinical trial committees for Novartis, AbbVie, Gilead, BioCryst, AbbVie, ALX Oncology, Geron, and Celgene/Bristol Myers Squibb; and travel expenses from Pfizer, Novartis, and Cardiff Oncology. RC reports speakers bureaus from Novartis, Beigene, Astellas, and Takeda; research grants from Novartis; fees for advisory board participantion from AbbVie and Gilead; and travel expenses from Janssen. H-AH has received honoraria, travel expenses, and consultancy fees from Novartis, AbbVie, and Bristol Myers Squibb. YLK has received consultancy fees from Amgen, Astellas, Bayer, Beigene, Bristol Myers Squibb, Celgene, Janssen, Merck, Novartis, Roche, and Takeda; and received research grants from Novartis, Merck, and Bristol Myers Squibb. MA reports honoraria from AbbVie, Astellas, Bristol Myers Squibb, Jazz, and Novartis; and has served on advisory boards for Bristol Myers Squibb. SM has received consulting fees or served on advisory boards for Alexion, Bristol Myers Squibb, Janssen, and Takeda; and reports honoraria from AbbVie, Alexion, Janssen, and Novartis. VP reports consultancy fees and honoraria from Novartis. VS has served on advisory boards for Bristol Myers Squibb, AbbVie, Geron, Gilead, Menarini, Novartis, Syros, Servier, Otsuka, and Takeda; and reports travel expenses from Janssen. KM, FK, JN, PM-R, and HM are employees of Novartis. PF reports honoraria and grants from Novartis. YM reports honoraria from Nippon-Shinyaku, Bristol Myers Squibb, Novartis, Sumitomo Pharma, Kyowa-Kirin, AbbVie, and Astellas; and research grants from Chugai Pharmaceutical. UP reports honoraria from Bristol Myers Squibb, Novartis, Curis, Geron, AbbVie, Janssen, and Jazz; and research grants from Curis, Jazz, Bristol Myers Squibb, and Novartis. All other authors declare no competing interests., (Copyright © 2024 Elsevier Ltd. All rights reserved.)- Published
- 2024
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254. Adapting patients' oncological treatment through remote participation of general practitioners in multi-disciplinary consultation meetings: A feasibility study.
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Druel V, Gimenez L, Tachousin P, Boussier N, Bauvin E, Pascale G, Beyne-Rauzy O, and Rougé Bugat ME
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- Adult, Feasibility Studies, France, Humans, Medical Oncology, Middle Aged, Referral and Consultation, General Practitioners psychology
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Background: The general practitioner (GP) is central to managing patients with cancer, whose numbers are increasing worldwide. The GP's involvement requires better coordination between involved partners, in particular oncologists and GPs., Objectives: To conduct a feasibility study of remote participation of GPs in multi-disciplinary consultation meetings (MCMs). We analysed participation, participants' satisfaction, and their impact on therapeutic decisions., Methods: We conducted a feasibility study in the regional cancer centre of Toulouse, France. All patient cases discussed in the MCMs for myelodysplasia from 1 January to 31 March 2016 were included. Cases of patients aged over 18 years, with a diagnosis of myelodysplasia and registered with a GP were included if patients gave informed consent. One investigator collected the data provided by GPs during three telephone or video calls: before, during, and after the MCM, respectively., Results: Of 86 patient cases discussed during three months of MCMs, 44 were eligible for GP participation; 27 GPs participated in discussions of 27 patient cases. The GP's participation in the MCM led to a change in management in five cases, with four times treatment intensifications and once de-intensification. Medical, social, family-related, and psychological domains were discussed with input from the GPs. Overall, all participants were satisfied with the MCMs., Conclusion: Remote participation of GPs in MCMs is feasible and may result in adapting oncological and haematological management for patients. This patient-centred approach requires a specific organisation that, when implemented, satisfies the needs of all participants.
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- 2022
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255. A Phase II prospective trial of azacitidine in steroid-dependent or refractory systemic autoimmune/inflammatory disorders and VEXAS syndrome associated with MDS and CMML.
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Mekinian A, Zhao LP, Chevret S, Desseaux K, Pascal L, Comont T, Maria A, Peterlin P, Terriou L, D'Aveni Piney M, Gourin MP, Vey N, Rauzy OB, Grobost V, Bezanahary H, Dimicoli-Salazar S, Banos A, Wickenhauser S, De Renzis B, Durot E, Natarajan-Amé S, Voillat L, Chermat F, Lemaire K, Jachiet V, Himberlin C, Thépot S, Diaz JMT, Frenzel L, Gyan E, Denis G, Hirsch P, Kosmider O, Ades L, Fain O, and Fenaux P
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- Humans, Azacitidine therapeutic use, Prospective Studies, Steroids, Leukemia, Myelomonocytic, Chronic complications, Leukemia, Myelomonocytic, Chronic drug therapy, Myelodysplastic Syndromes complications, Myelodysplastic Syndromes drug therapy
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- 2022
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256. Venous thromboembolism during systemic inflammatory and autoimmune diseases associated with myelodysplastic syndromes, chronic myelomonocytic leukaemia and myelodysplastic/myeloproliferative neoplasms: a French multicentre retrospective case-control study.
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Péan de Ponfilly-Sotier M, Jachiet V, Benhamou Y, Lahuna C, De Renzis B, Kottler D, Voillat L, Dimicoli-Salazar S, Banos A, Chauveheid MP, Alexandra JF, Grignano E, Liferman F, Laborde M, Broner J, Michel M, Lambotte O, Laribi K, Venon MD, Dussol B, Martis N, Thepot S, Park S, Couret D, Roux-Sauvat M, Terriou L, Hachulla E, Bally C, Galland J, Allain JS, Parcelier A, Peterlin P, Cohen-Bittan J, Regent A, Ackermann F, Le Guen J, Algrin C, Charles P, Daguindau E, Puechal X, Dunogue B, Blanchard-Delaunay C, Beyne-Rauzy O, Grobost V, Schmidt J, Le Gallou T, Dubos-Lascu G, Sonet A, Denis G, Roy-Peaud F, Fenaux P, Adès L, Fain O, and Mekinian A
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- Case-Control Studies, Humans, Retrospective Studies, Autoimmune Diseases complications, Autoimmune Diseases epidemiology, Leukemia, Myelomonocytic, Chronic complications, Leukemia, Myelomonocytic, Chronic epidemiology, Myelodysplastic Syndromes complications, Myelodysplastic Syndromes epidemiology, Venous Thromboembolism diagnosis, Venous Thromboembolism epidemiology, Venous Thromboembolism etiology
- Abstract
Objectives: Myelodysplastic syndromes (MDS) and chronic myelomonocytic leukaemia (CMML) are associated with systemic inflammatory and autoimmune diseases (SIADs) in 10-30% of cases. The aims of this study were (i) to evaluate the prevalence of venous thromboembolism VTE in patients presenting with both MDS/CMML and SIADs, (ii) to describe risk factors associated with thrombosis, and (iii) to analyse the impact of VTE on overall survival and transformation to acute myeloid leukaemia in comparison to patients with MDS/CMML-associated SIADs without VTE., Methods: This retrospective multicentre case-control study was conducted among patients with MDS/CMML and dysimmune disorders and featured in the French retrospective database of the French Network of Dysimmune Disorders Associated with Hemopathies (MINHEMON), diagnosed with MDS/CMML and dysimmune disorders., Results: During a median follow-up of 16 months (5-48) VTE occurred in 35 patients (21.6 %) whereas 127 patients did not. Among those with VTE, 8 patients (22.9%) experienced two or more VTE. Common prothrombotic risk factors were not significantly different in patients with or without VTE. CMML was more frequent in patients without VTE (37 % vs. 14.3%, p=0.01), whereas myelodysplasic/myeloproliferative neoplasm (MDS/MPN) was higher in VTE patients (20 % vs. 5.5 %, p=0.01). In a multivariate analysis, only MDS/CMML progression at the time of VTE (odds ratio 28.82, 95 % CI (5.52-530.70) was significantly associated with VTE. When treated with an anticoagulation therapy, bleeding occurred in 19.4% of cases (6/31). Overall survival was not significantly different between patients with and without VTE (p=0.68). Leukaemia-free survival between groups was not significantly different (p=0.83)., Conclusions: VTE is a common complication in MDS/CMML-associated SIADSs with an increased risk of bleeding when treated by anticoagulants. In the MDS/CMML subgroup, SIADS flares and MDS/CMML progression seem to be prothrombotic risk factors.
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- 2022
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257. Eltrombopag in adult patients with immune thrombocytopenia in the real-world in France, including off-label use before 6 months of disease duration: The multicenter, prospective ELEXTRA study.
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Moulis G, Germain J, Rueter M, Lafaurie M, Aroichane M, Comont T, Mahévas M, Viallard JF, Chèze S, Ebbo M, Audia S, Leclerc-Teffahi S, Sommet A, Beyne-Rauzy O, Michel M, Godeau B, and Lapeyre-Mestre M
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- Adult, Aged, Benzoates adverse effects, Female, France epidemiology, Humans, Hydrazines adverse effects, Male, Middle Aged, Off-Label Use, Prospective Studies, Purpura, Thrombocytopenic, Idiopathic epidemiology, Pyrazoles adverse effects, Treatment Outcome, Benzoates therapeutic use, Hydrazines therapeutic use, Purpura, Thrombocytopenic, Idiopathic drug therapy, Pyrazoles therapeutic use
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- 2022
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258. Inflammatory myopathies associated with myelodysplastic syndromes: A French multicenter case control study and literature review.
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Briantais A, Séguier J, De Sainte Marie B, Mekinian A, Belizna C, Gondran G, Maurier F, Trouiller S, Willems L, Beyne-Rauzy O, Harlé JR, Vey N, Ebbo M, and Schleinitz N
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- Adult, Aged, Autoantibodies, Case-Control Studies, Humans, Male, Middle Aged, Multicenter Studies as Topic, Myelodysplastic Syndromes complications, Myositis complications
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Objective: Patients with inflammatory myopathies (IM) are known to have an increased risk of developing malignancies. Autoimmune and inflammatory diseases occur in up to 25% of patients with myelodysplastic syndrome (MDS). This study aimed to describe the rare association between IM and MDS., Methods: We report here the main characteristics, treatment, and outcome of 21 patients (11 national cases and 10 additional cases from a literature review) with IM associated to MDS., Results: Median age of patients at IM diagnosis was 66 years (range 26 - 78). Diagnosis of the two conditions were concomitant in most patients (n=14/21) whereas MDS diagnosis preceded IM diagnosis in 5 patients. Different types of IM were observed but dermatomyositis was the most frequent (59%). Compared to IM without MDS (IM/MDS
- ), patients with MDS (IM/MDS+ ) were older (median 66 vs 55, p=0.3), more frequently male (sex ratio M/F 1.125 vs 0.41, p=0.14) and positive for anti-TIF1γ (24% vs 4%, p=0.0039). Antisynthetase syndrome was never observed among IM/MDS+ patients (0% vs 28%, p=0.01). MDS WHO type was not univocal, but the prognostic score was of low risk in almost all cases. IM was usually steroid sensitive (82% of patients) but often steroid dependent (56% of patients). Overall survival of IM patients with MDS was worse compared to patients with IM without MDS (p=0.0002)., Conclusion: IM associated with MDS are mainly represented by dermatomyositis and/or anti-TIF1γ autoantibodies. Antisynthetase syndrome has not been described in association with MDS. Despite low-risk MDS, overall survival of IM patients with MDS is worse than IM patients without MDS., Competing Interests: Declaration of Competing Interest The authors have declared no conflicts of interest., (Copyright © 2021 Elsevier Inc. All rights reserved.)- Published
- 2021
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259. Eltrombopag for myelodysplastic syndromes or chronic myelomonocytic leukaemia with no excess blasts and thrombocytopenia: a French multicentre retrospective real-life study.
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Comont T, Meunier M, Cherait A, Santana C, Cluzeau T, Slama B, Laribi K, Giraud JT, Dimicoli S, Berceanu A, Le Clech L, Cony-Makhoul P, Gruson B, Torregrosa J, Sanhes L, Jachiet V, Azerad MA, Al Jijakli A, Gyan E, Gaudin C, Broner J, Guerveno C, Guillaume T, Ades PL, Beyne-Rauzy O, and Fenaux P
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- Aged, Aged, 80 and over, Blood Platelets drug effects, Female, France epidemiology, Humans, Leukemia, Myelomonocytic, Chronic epidemiology, Male, Myelodysplastic Syndromes epidemiology, Retrospective Studies, Thrombocytopenia epidemiology, Benzoates therapeutic use, Hydrazines therapeutic use, Leukemia, Myelomonocytic, Chronic drug therapy, Myelodysplastic Syndromes drug therapy, Pyrazoles therapeutic use, Receptors, Thrombopoietin agonists, Thrombocytopenia drug therapy
- Abstract
Despite a moderate prevalence in low-risk myelodysplastic syndromes (MDS) and chronic myelomonocytic leukaemia (CMML), thrombocytopenia remains a risk of severe bleeding and therapeutic options are still limited. There are only a few studies with eltrombopag (ELT), a thrombopoietin receptor agonist, in those patients. In this retrospective multicentre study, ELT was used in 50 patients with MDS and 11 with CMML, with no excess of marrow blasts and platelet counts of <50 × 10
9 /l in a 'real-life' situation. Platelet response occurred in 47 (77%) patients. The median (range) duration of response was 8 (0-69) months. None of the eight still responders who discontinued ELT had relapsed, at a median (range) of 16 (6-23) months after ELT discontinuation. Although 36% of the patients were anti-coagulated or anti-aggregated only 10% of patients had Grade ≥3 bleeding events. Thrombotic events were observed in six (10%) patients, who all but one had a medical history of arterial or venous thrombosis. Progression to acute myeloid leukaemia occurred in four (7%) patients. In this first 'real-life' study, ELT was effective and generally well tolerated in patients with MDS/CMML without excess blasts., (© 2021 British Society for Haematology and John Wiley & Sons Ltd.)- Published
- 2021
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260. Eprenetapopt Plus Azacitidine in TP53 -Mutated Myelodysplastic Syndromes and Acute Myeloid Leukemia: A Phase II Study by the Groupe Francophone des Myélodysplasies (GFM).
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Cluzeau T, Sebert M, Rahmé R, Cuzzubbo S, Lehmann-Che J, Madelaine I, Peterlin P, Bève B, Attalah H, Chermat F, Miekoutima E, Rauzy OB, Recher C, Stamatoullas A, Willems L, Raffoux E, Berthon C, Quesnel B, Loschi M, Carpentier AF, Sallman DA, Komrokji R, Walter-Petrich A, Chevret S, Ades L, and Fenaux P
- Subjects
- Adult, Aged, Aged, 80 and over, Azacitidine adverse effects, Humans, Leukemia, Myeloid, Acute genetics, Leukemia, Myeloid, Acute mortality, Middle Aged, Myelodysplastic Syndromes genetics, Myelodysplastic Syndromes mortality, Quinuclidines adverse effects, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Azacitidine administration & dosage, Leukemia, Myeloid, Acute drug therapy, Mutation, Myelodysplastic Syndromes drug therapy, Quinuclidines administration & dosage, Tumor Suppressor Protein p53 genetics
- Abstract
Purpose: TP53 -mutated ( TP53m ) myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML) have very poor outcome irrespective of the treatment received, including 40% responses (20% complete remission [CR]) with azacitidine (AZA) alone, short response duration, and a median overall survival (OS) of approximately 6 months. Eprenetapopt (APR-246), a novel first-in-class drug, leads to p53 protein reconformation and reactivates its proapoptotic and cell-cycle arrest functions., Patients and Methods: This phase II study assessed the safety and efficacy of eprenetapopt in combination with AZA in untreated high or very high International Prognostic Scoring System-R TP53m MDS and AML patients., Results: Fifty-two TP53m patients (34 MDS, 18 AML [including seven with more than 30% blasts]) were enrolled. In MDS, we observed an overall response rate (ORR) of 62%, including 47% CR, with a median duration of response at 10.4 months. In AML, the ORR was 33% including 17% CR (27% and 0% CR in AML with less than and more than 30% marrow blasts, respectively). Seventy-three percent of responders achieved TP53 next-generation sequencing negativity (ie, variant allele frequency < 5%). The main treatment-related adverse events were febrile neutropenia (36%) and neurologic adverse events (40%), the latter correlating with a lower glomerular filtration rate at treatment onset ( P < .01) and higher age ( P = .05), and resolving with temporary drug interruption without recurrence after adequate eprenetapopt dose reduction. With a median follow-up of 9.7 months, median OS was 12.1 months in MDS, and 13.9 and 3.0 months in AML with less than and more than 30% marrow blasts, respectively., Conclusion: In this very high-risk population of TP53m MDS and AML patients, eprenetapopt combined with AZA was safe and showed potentially higher ORR and CR rate, and longer OS than reported with AZA alone., Competing Interests: Thomas CluzeauConsulting or Advisory Role: Abbvie, Agios, Bristol-Myers Squibb, Jazz Pharmaceuticals, Novartis, Roche, Takeda, Syros PharmaceuticalsSpeakers' Bureau: Novartis, Amgen, Sanofi, Astellas PharmaTravel, Accommodations, Expenses: Bristol-Myers Squibb, Novartis, Pfizer, Sanofi Jacqueline Lehmann-CheConsulting or Advisory Role: AstraZeneca, Roche Pierre PeterlinConsulting or Advisory Role: Jazz Pharmaceuticals, Abbvie, Astellas Pharma, Daiichi Sankyo/Lilly Odile Beyne RauzyTravel, Accommodations, Expenses: Novartis Christian RecherConsulting or Advisory Role: Roche, Pfizer, Incyte, Novartis, Otsuka, Astellas Pharma, Daiichi Sankyo, Macrogenics, Janssen, Abbvie, Jazz Pharmaceuticals, Amgen, CelgeneResearch Funding: Abbvie, Roche, MaaT Pharma, Daiichi Sankyo, Agios, Chugai Pharma, Astellas Pharma, Jazz Pharmaceuticals, Novartis, Amgen, CelgeneTravel, Accommodations, Expenses: Gilead Sciences, Daiichi Sankyo, Novartis, Amgen, Celgene, Sanofi, Incyte Aspasia StamatoullasHonoraria: CelgeneConsulting or Advisory Role: TakedaTravel, Accommodations, Expenses: Pfizer Lise WillemsHonoraria: Abbvie, Janssen, Novartis Emmanuel RaffouxTravel, Accommodations, Expenses: Abbvie, Roche Bruno QuesnelResearch Funding: Daiichi Sankyo Europe GmbH Michael LoschiConsulting or Advisory Role: Astellas Pharma, Iqone, NovartisTravel, Accommodations, Expenses: Novartis/Pfizer, MSD Antoine F. CarpentierStock and Other Ownership Interests: AltevaxHonoraria: Gilead SciencesConsulting or Advisory Role: Bristol-Myers Squibb David A. SallmanConsulting or Advisory Role: Syndax, Novartis, Magenta Therapeutics, Kite Pharma, Intellia Therapeutics, Gilead Sciences, Bristol-Myers Squibb, Aprea AB, Abbvie, Celyad, AgiosSpeakers' Bureau: Bristol-Myers Squibb, Incyte, AgiosResearch Funding: Jazz Pharmaceuticals, CelgenePatents, Royalties, Other Intellectual Property: Intellectual Property Patent for LB-100 in MDS Rami KomrokjiStock and Other Ownership Interests: AbbvieConsulting or Advisory Role: Acceleron Pharma, Abbvie, Geron, Jazz Pharmaceuticals, Bristol-Myers Squibb, Incyte, NovartisSpeakers' Bureau: Bristol-Myers Squibb, Jazz PharmaceuticalsTravel, Accommodations, Expenses: Agios, Bristol-Myers Squibb, Jazz Pharmaceuticals, Incyte Lionel AdesResearch Funding: CelgeneHonoraria: Novartis, Silence Therapeutics, BerGenBio, Jazz Pharmaceuticals, Abbvie, Celgene Pierre FenauxHonoraria: CelgeneResearch Funding: CelgeneNo other potential conflicts of interest were reported.
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- 2021
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261. Clinical spectrum, outcome and management of immune thrombocytopenia associated with myelodysplastic syndromes and chronic myelomonocytic leukemia.
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Jachiet V, Moulis G, Hadjadj J, Seguier J, Laribi K, Schleinitz N, Vey N, Sacre K, Godeau B, Beyne-Rauzy O, Bouvet R, Broner J, Brun N, Comont T, Gaudin C, Lambotte O, Le Clech L, Peterlin P, Roy-Peaud F, Salvado C, Versini M, Isnard F, Kahn JE, Gobert D, Adès L, Fenaux P, Fain O, and Mekinian A
- Subjects
- Humans, Leukemia, Myeloid, Acute, Leukemia, Myelomonocytic, Chronic complications, Leukemia, Myelomonocytic, Chronic diagnosis, Leukemia, Myelomonocytic, Chronic therapy, Myelodysplastic Syndromes complications, Myelodysplastic Syndromes diagnosis, Myelodysplastic Syndromes therapy, Purpura, Thrombocytopenic, Idiopathic diagnosis, Purpura, Thrombocytopenic, Idiopathic etiology, Purpura, Thrombocytopenic, Idiopathic therapy, Thrombocytopenia
- Abstract
Myelodysplastic syndromes (MDS) and chronic myelomonocytic leukemia (CMML) are associated with systemic inflammatory or autoimmune diseases in 10-20 % of cases. Among them, immune thrombocytopenia (ITP) has been reported but large studies assessing this association are missing. Whether such patients have a particular phenotype and require particular management is unclear. This study analyzes the clinical spectrum, outcome and therapeutic management of patients with ITP associated with MDS or CMML, in comparison (i) to patients with primary ITP without MDS/CMML and (ii) to patients with MDS/CMML without ITP. Forty-one MDS/CMML-associated ITP patients were included, with chronic ITP in 26 (63%) patients, low-risk myelodysplasia in 30 (73%) patients and CMML in 24 (59%) patients. An associated autoimmune disease was noted in 10 (24%) patients. In comparison to primary ITP patients, MDS/CMML-associated ITP patients had a higher occurrence of severe bleeding despite similar platelet counts at diagnosis. First-line treatment consisted of glucocorticoids (98%) and intravenous immunoglobulin (IVIg) (56%). Response achievement with IVIg was more frequent in primary ITP than in MDS/CMML-associated ITP patients. Response rates to second-line therapies were not statistically different between primary ITP and MDS/CMMLassociated ITP patients. Ten percent (n=4) of patients with MDS/CMML-associated ITP had multirefractory ITP versus none in primary ITP controls. After a median follow-up of 60 months, there was no difference in overall survival between MDS/CMML-associated ITP and primary ITP patients. Leukemia-free-survival was significantly better in MDS/CMMLassociated ITP patients than in MDS/CMML without ITP MDS/CMML-associated ITP have a particular outcome with more severe bleeding and multirefractory profile than primary ITP, similar response profile to primary ITP therapy except for IVIg, and less progression toward acute myeloid leukemia than MDS/CMML without ITP.
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- 2021
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262. Small Private Online Course in Teaching Oncology-Feedback After 1 Year: What Lessons?
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Vaysse C, Fize AL, Despas F, Chantalat E, Serrano E, Beyne-Rauzy O, and Rougé-Bugat ME
- Subjects
- Adult, Feedback, Female, Humans, Male, Middle Aged, Medical Oncology, Teaching
- Abstract
In response to the complexity of medical care in oncology, 2 years ago, we designed a new teaching method (SPOC, Small Private Online Course) to improve cancer treatment and its management by emphasizing the community-hospital interface. The educational objective of this study was to evaluate after 1 year if the interest for this teaching remained constant over the long term to meet both educational and financial requirements. We designed a questionnaire including 18 questions grouped in 3 main parts describing the profile of the participants, his/her own experience, and the current utilization of the SPOC. Of 1574 participants of the 2 first sessions, 182 (11.5%) completed the questionnaire after 1 year. The majority of respondents were between the ages of 31 and 60 and belonged to a paramedical group (47.81%). After 1 year, 84.6% participants were satisfied or very satisfied with the content of the SPOC, 83.6% would recommended it, and 67% would be interested in using an updated SPOC again. Only 4.9% kept some contacts with other participants and 4.9% with teachers. 31.3% considered that the SPOC had a medium impact on their professional activity, 33.5% a lot, and 2.7% completely whereas 24.7% considered that it had little impact. The evaluation at 1 year showed that this digital learning method had a global positive impact on the professional practice of the participants. This study highlighted the empowerment of participants after this kind of teaching, but the network between participants was not enhanced.
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- 2021
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263. Kidney Involvement in Patients With Chronic Myelomonocytic Leukemia or BCR-ABL-Negative Myeloproliferative Neoplasms.
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Belliere J, Colombat M, Kounde C, Recher C, Ribes D, Huart A, Chauveau D, Demas V, Luquet I, Beyne-Rauzy O, Tavitian S, and Faguer S
- Abstract
Introduction: The identification of specific molecular signatures and the development of new targeted drugs have changed the paradigm of onco-nephrology, now allowing a multiscale approach of kidney involvement related to hematologic malignancies relying on combined hematologic and molecular assessments. In this study, we aimed to refine the spectrum of kidney disorders associated with chronic myelomonocytic leukemia (CMML) or BCR-ABL-negative myeloproliferative neoplasms (MPNs), 2 very rare conditions scarcely described., Methods: Case series. Patients with myeloid neoplasms who were referred to Toulouse University Hospital Nephrology Unit and were diagnosed with acute kidney injury (AKI), chronic kidney disease (CKD), or urine abnormalities were retrospectively included., Results: Eighteen patients (males n =13, CMML n =8, essential thrombocytosis [ET] n =7, polycythemia vera [PV] n =1, and myelofibrosis n =2) developed kidney disease 7.7±2 years after the diagnosis of the malignancy. Twelve patients had AKI at presentation. Eight patients had glomerular presentation (high-range proteinuria 33%, microscopic hematuria 56%). Kidney biopsy ( n =14) showed various patterns, including pauci-immune glomerulosclerosis ( n =5), extramedullary hematopoiesis ( n =6), or tubular atrophy and interstitial fibrosis with polymorphic inflammation ( n =8). Immunostaining of CD61 confirmed the infiltration of megakaryocytes within glomeruli or interstitium in 5 of 8 patients. Other pictures of glomerulopathy were identified in 3 patients (IgA nephropathy n =2, AA amyloidosis n =1). Massive kidney infiltration by CMML was identified in 1 patient. After a mean follow-up of 24±6 months, malignancy was considered as stable in 11 patients (61%), but 22% of patients had progressed to end-stage renal failure. The remaining had persistently reduced kidney function. No correlation between the malignancy and the renal presentation and outcomes could be identified., Conclusions: Kidney complications of CMML/MPN are heterogenous, and kidney biopsy may help to identify new molecular targets to prevent the development of kidney fibrosis., (© 2021 International Society of Nephrology. Published by Elsevier Inc.)
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- 2020
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264. Positivity rate of systematic bone marrow smear in patients over 60 years old with newly diagnosed immune thrombocytopenia.
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Comont T, Germain J, Beyne-Rauzy O, Adoue D, and Moulis G
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- Bone Marrow, Consensus, Humans, Middle Aged, Purpura, Thrombocytopenic, Idiopathic diagnosis, Purpura, Thrombocytopenic, Idiopathic epidemiology, Thrombocytopenia diagnosis
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- 2020
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265. Significance of antinuclear antibodies in primary immune thrombocytopenia: results of the CARMEN registry.
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Moulis G, Comont T, Germain J, Sommet A, Lapeyre-Mestre M, Beyne-Rauzy O, and Adoue D
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- Antibodies, Antinuclear, Autoimmunity, Humans, Prevalence, Prognosis, Registries, Purpura, Thrombocytopenic, Idiopathic diagnosis, Purpura, Thrombocytopenic, Idiopathic epidemiology
- Published
- 2020
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266. Impact of red blood cell transfusion dose density on progression-free survival in patients with lower-risk myelodysplastic syndromes.
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de Swart L, Crouch S, Hoeks M, Smith A, Langemeijer S, Fenaux P, Symeonidis A, Cermâk J, Hellström-Lindberg E, Stauder R, Sanz G, Mittelman M, Holm MS, Malcovati L, Mądry K, Germing U, Tatic A, Savic A, Almeida AM, Gredelj-Simec N, Guerci-Bresler A, Beyne-Rauzy O, Culligan D, Kotsianidis I, Itzykson R, van Marrewijk C, Blijlevens N, Bowen D, and de Witte T
- Subjects
- Erythrocyte Transfusion adverse effects, Europe, Humans, Israel epidemiology, Progression-Free Survival, Prospective Studies, Myelodysplastic Syndromes therapy
- Abstract
Progression-free survival (PFS) of patients with lower-risk myelodysplastic syndromes (MDS) treated with red blood cell transfusions is usually reduced, but it is unclear whether transfusion dose density is an independent prognostic factor. The European MDS Registry collects prospective data at 6-monthly intervals from newly diagnosed lower-risk myelodysplastic syndromes patients in 16 European countries and Israel. Data on the transfusion dose density - the cumulative dose received at the end of each interval divided by the time since the beginning of the interval in which the first transfusion was received - were analyzed using proportional hazards regression with time-varying co-variates, with death and progression to higher-risk MDS/acute myeloid leukemia as events. Of the 1,267 patients included in the analyses, 317 died without progression; in 162 patients the disease had progressed. PFS was significantly associated with age, EQ-5D index, baseline World Health Organization classification, bone marrow blast count, cytogenetic risk category, number of cytopenias, and country. Transfusion dose density was inversely associated with PFS ( P <1×10
-4 ): dose density had an increasing effect on hazard until a dose density of 3 units/16 weeks. The transfusion dose density effect continued to increase beyond 8 units/16 weeks after correction for the impact of treatment with erythropoiesis-stimulating agents, lenalidomide and/or iron chelators. In conclusion, the negative effect of transfusion treatment on PFS already occurs at transfusion densities below 3 units/16 weeks. This indicates that transfusion dependency, even at relatively low dose densities, may be considered as an indicator of inferior PFS. This trial was registered at www.clinicaltrials.gov as #NCT00600860., (Copyright© 2020 Ferrata Storti Foundation.)- Published
- 2020
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267. Nivolumab-induced eosinophilic fasciitis: a case report.
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Ollier N, Tournier E, Meyer N, Sibaud V, Pages-Laurent C, Cougoul P, Beyne-Rauzy O, and Comont T
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- 2020
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268. Luspatercept in Patients with Lower-Risk Myelodysplastic Syndromes.
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Fenaux P, Platzbecker U, Mufti GJ, Garcia-Manero G, Buckstein R, Santini V, Díez-Campelo M, Finelli C, Cazzola M, Ilhan O, Sekeres MA, Falantes JF, Arrizabalaga B, Salvi F, Giai V, Vyas P, Bowen D, Selleslag D, DeZern AE, Jurcic JG, Germing U, Götze KS, Quesnel B, Beyne-Rauzy O, Cluzeau T, Voso MT, Mazure D, Vellenga E, Greenberg PL, Hellström-Lindberg E, Zeidan AM, Adès L, Verma A, Savona MR, Laadem A, Benzohra A, Zhang J, Rampersad A, Dunshee DR, Linde PG, Sherman ML, Komrokji RS, and List AF
- Subjects
- Activin Receptors, Type II adverse effects, Adult, Aged, Aged, 80 and over, Anemia, Sideroblastic therapy, Double-Blind Method, Female, Hematinics adverse effects, Hemoglobins analysis, Humans, Immunoglobulin Fc Fragments adverse effects, Infusions, Subcutaneous, Male, Middle Aged, Myelodysplastic Syndromes therapy, Recombinant Fusion Proteins adverse effects, Activin Receptors, Type II therapeutic use, Anemia, Sideroblastic drug therapy, Erythrocyte Transfusion, Hematinics therapeutic use, Immunoglobulin Fc Fragments therapeutic use, Myelodysplastic Syndromes drug therapy, Recombinant Fusion Proteins therapeutic use
- Abstract
Background: Patients with anemia and lower-risk myelodysplastic syndromes in whom erythropoiesis-stimulating agent therapy is not effective generally become dependent on red-cell transfusions. Luspatercept, a recombinant fusion protein that binds transforming growth factor β superfamily ligands to reduce SMAD2 and SMAD3 signaling, showed promising results in a phase 2 study., Methods: In a double-blind, placebo-controlled, phase 3 trial, we randomly assigned patients with very-low-risk, low-risk, or intermediate-risk myelodysplastic syndromes (defined according to the Revised International Prognostic Scoring System) with ring sideroblasts who had been receiving regular red-cell transfusions to receive either luspatercept (at a dose of 1.0 up to 1.75 mg per kilogram of body weight) or placebo, administered subcutaneously every 3 weeks. The primary end point was transfusion independence for 8 weeks or longer during weeks 1 through 24, and the key secondary end point was transfusion independence for 12 weeks or longer, assessed during both weeks 1 through 24 and weeks 1 through 48., Results: Of the 229 patients enrolled, 153 were randomly assigned to receive luspatercept and 76 to receive placebo; the baseline characteristics of the patients were balanced. Transfusion independence for 8 weeks or longer was observed in 38% of the patients in the luspatercept group, as compared with 13% of those in the placebo group (P<0.001). A higher percentage of patients in the luspatercept group than in the placebo group met the key secondary end point (28% vs. 8% for weeks 1 through 24, and 33% vs. 12% for weeks 1 through 48; P<0.001 for both comparisons). The most common luspatercept-associated adverse events (of any grade) included fatigue, diarrhea, asthenia, nausea, and dizziness. The incidence of adverse events decreased over time., Conclusions: Luspatercept reduced the severity of anemia in patients with lower-risk myelodysplastic syndromes with ring sideroblasts who had been receiving regular red-cell transfusions and who had disease that was refractory to or unlikely to respond to erythropoiesis-stimulating agents or who had discontinued such agents owing to an adverse event. (Funded by Celgene and Acceleron Pharma; MEDALIST ClinicalTrials.gov number, NCT02631070; EudraCT number, 2015-003454-41.)., (Copyright © 2020 Massachusetts Medical Society.)
- Published
- 2020
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269. A phase II study of guadecitabine in higher-risk myelodysplastic syndrome and low blast count acute myeloid leukemia after azacitidine failure.
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Sébert M, Renneville A, Bally C, Peterlin P, Beyne-Rauzy O, Legros L, Gourin MP, Sanhes L, Wattel E, Gyan E, Park S, Stamatoullas A, Banos A, Laribi K, Jueliger S, Bevan L, Chermat F, Sapena R, Nibourel O, Chaffaut C, Chevret S, Preudhomme C, Adès L, and Fenaux P
- Subjects
- Aged, Female, Humans, Leukemia, Myeloid, Acute mortality, Leukemia, Myeloid, Acute pathology, Male, Myelodysplastic Syndromes diagnosis, Myelodysplastic Syndromes mortality, Risk, Survival Analysis, Treatment Outcome, Azacitidine analogs & derivatives, Azacitidine therapeutic use, Leukemia, Myeloid, Acute drug therapy, Myelodysplastic Syndromes drug therapy
- Abstract
High-risk myelodysplastic syndrome/acute myeloid leukemia patients have a very poor survival after azacitidine failure. Guadecitabine (SGI-110) is a novel subcutaneous hypomethylating agent which results in extended decitabine exposure. This multicenter phase II study evaluated the efficacy and safety of guadecitabine in high-risk myelodysplastic syndrome and low blast count acute myeloid leukemia patients refractory or relapsing after azacitidine. We included 56 patients with a median age of 75 years [Interquartile Range (IQR) 69-76]. Fifty-five patients received at least one cycle of guadecitabine (60 mg/m2/d subcutaneously days 1-5 per 28-day treatment cycles), with a median of 3 cycles (range, 0-27). Eight (14.3%) patients responded, including two complete responses; median response duration was 11.5 months. Having no or few identified somatic mutations was the only factor predicting response ( P =0.035). None of the 11 patients with TP53 mutation responded. Median overall survival was 7.1 months, and 17.9 months in responders (3 of whom had overall survival >2 years). In multivariate analysis, IPSS-R (revised International Prognostic Scoring System) score other than very high ( P =0.03) primary versus secondary azacitidine failure ( P =0.01) and a high rate of demethylation in blood during the first cycle of treatment ( P =0.03) were associated with longer survival. Thus, guadecitabine can be effective, sometimes yielding relatively prolonged survival, in a small proportion of high-risk myelodysplastic syndrome/low blast count acute myeloid leukemia patients who failed azacitidine. (Trial registered a t clinicaltrials.gov identifier: 02197676 )., (Copyright© 2019 Ferrata Storti Foundation.)
- Published
- 2019
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270. Prognostic impact of a suboptimal number of analyzed metaphases in normal karyotype lower-risk MDS.
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de Swart L, Smith A, Haase D, Fenaux P, Symeonidis A, Cermak J, Sanz G, Stauder R, Mittelman M, Hellström-Lindberg E, Malcovati L, Langemeijer S, Skov-Holm M, Mądry K, Germing U, Almeida AM, Tatic A, Savic A, Šimec NG, van Marrewijk C, Guerci-Bresler A, Sanhes L, Luño E, Culligan D, Beyne-Rauzy O, Burgstaller S, Blijlevens N, Bowen D, and de Witte T
- Subjects
- Abnormal Karyotype, Adolescent, Adult, Aged, Aged, 80 and over, Clone Cells pathology, Disease-Free Survival, Female, Humans, In Situ Hybridization, Fluorescence, Male, Middle Aged, Prognosis, Prospective Studies, Risk Factors, Survival Analysis, Young Adult, Karyotype, Metaphase, Myelodysplastic Syndromes genetics, Myelodysplastic Syndromes pathology
- Abstract
Conventional karyotype is one of the most relevant prognostic factors in MDS. However, about 50% of patients with MDS have a normal karyotype. Usually, 20-25 normal metaphases (nMP) are considered to be optimal to exclude small abnormal clones which might be associated with poor prognosis. This study evaluated the impact of examining a suboptimal number of metaphases in patients recruited to the EUMDS Registry with low and intermediate-1 risk according to IPSS. Only 179/1049 (17%) of patients with a normal karyotype had a suboptimal number of nMP, defined as less than 20 metaphases analyzed. The outcome (overall survival and progression-free survival) of patients with suboptimal nMP was not inferior to those with higher numbers of analyzed MP both in univariate and multivariate analyses. For patients with an abnormal karyotype, 224/649 (35%) had a suboptimal number of MP assessed, but this did not impact on outcome. For patients with a normal karyotype and suboptimal numbers of analyzable metaphases standard evaluation might be acceptable for general practice, but we recommend additional FISH-analyses or molecular techniques, especially in candidates for intensive interventions., (Copyright © 2018 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2018
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271. The Impact of a Small Private Online Course as a New Approach to Teaching Oncology: Development and Evaluation.
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Vaysse C, Chantalat E, Beyne-Rauzy O, Morineau L, Despas F, Bachaud JM, Caunes N, Poublanc M, Serrano E, Bugat R, Rougé Bugat ME, and Fize AL
- Abstract
Background: Oncology involves complex care and multidisciplinary management of patients; however, misinformation and ineffective communication remain problematic., Objective: The educational objective of our study was to develop a new teaching method to improve cancer treatment and management by emphasizing the link between hospitals (inpatients) and their surrounding communities (outpatients)., Methods: A team of 22 professionals from public and private institutions developed a small private online course (SPOC). Each offering of the course lasted 6 weeks and covered 6 topics: individual health care plans, cancer surgery, ionizing radiation, cancer medicines, clinical research, and oncological supportive care. For participants in the course, we targeted people working in the cancer field. The SPOC used an active teaching method with collaborative and multidisciplinary learning. A final examination was offered in each session. We evaluated participants' satisfaction rate through a questionnaire and the success of the SPOC by participants' completion, success, and commitment rates., Results: Of the total participants (N=1574), 446 completed the evaluation form. Most participants were aged 31 to 45 years. Participants included 56 nurses, 131 pharmacists, 80 from the medical field (including 26 physicians), 53 from patients' associations, 28 health teachers, and 13 students (medical and paramedical). Among the participants, 24.7% (90/446) had an independent medical practice, 38.5% (140/446) worked in a public institution, and 36.8% (134/446) worked in a private institution. After completing the SPOC sessions, 85.9% (384/446) thought they had learned new information, 90.8% (405/446) felt their expectations were met, and 90.4% (403/446) considered that the information had a positive impact on their professional practice. The completion rate was 35.51% (559/1574), the success rate was 71.47% (1025/1574), and the commitment rate was 64.67% (1018/1574). Concerning the cost effectiveness of SPOC compared with a traditional classroom of 25 students, online education became more effective when there were more than 950 participants., Conclusions: SPOCs improved the management of oncology patients. This new digital learning technique is an attractive concept to integrate into teaching practice. It offered optimal propagation of information and met the students' expectations., (©Charlotte Vaysse, Elodie Chantalat, Odile Beyne-Rauzy, Louise Morineau, Fabien Despas, Jean-Marc Bachaud, Nathalie Caunes, Muriel Poublanc, Elie Serrano, Roland Bugat, Marie-Eve Rougé Bugat, Anne-Laure Fize. Originally published in JMIR Medical Education (http://mededu.jmir.org), 05.03.2018.)
- Published
- 2018
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272. Sotatercept with long-term extension for the treatment of anaemia in patients with lower-risk myelodysplastic syndromes: a phase 2, dose-ranging trial.
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Komrokji R, Garcia-Manero G, Ades L, Prebet T, Steensma DP, Jurcic JG, Sekeres MA, Berdeja J, Savona MR, Beyne-Rauzy O, Stamatoullas A, DeZern AE, Delaunay J, Borthakur G, Rifkin R, Boyd TE, Laadem A, Vo B, Zhang J, Puccio-Pick M, Attie KM, Fenaux P, and List AF
- Subjects
- Female, Humans, Immunoglobulin G pharmacology, Male, Myelodysplastic Syndromes complications, Recombinant Fusion Proteins pharmacology, Treatment Outcome, Anemia drug therapy, Immunoglobulin G therapeutic use, Myelodysplastic Syndromes drug therapy, Recombinant Fusion Proteins therapeutic use
- Abstract
Background: Myelodysplastic syndromes are characterised by ineffective erythropoiesis leading to anaemia. Sotatercept (ACE-011) is a novel activin receptor type IIA fusion protein that acts as a ligand trap to neutralise negative regulators of late-stage erythropoiesis. The aim of the study was to establish a safe and effective dose of sotatercept for the treatment of anaemia in patients with lower-risk myelodysplastic syndromes., Methods: This open-label, multicentre, dose-ranging, phase 2 trial took place at 11 treatment centres in the USA and France. Eligible patients were aged 18 years or older, had International Prognostic Scoring System-defined low-risk or intermediate-1-risk myelodysplastic syndromes, had anaemia requiring red blood cell (RBC) transfusions, and were ineligible for, or refractory to, erythropoiesis-stimulating agents (ESAs). Patients were not eligible if they had chromosome 5q deletion myelodysplastic syndromes without documented failure of lenalidomide. Patients were randomly assigned to receive either 0·1 or 0·3 mg/kg sotatercept subcutaneously, using a permuted-block method with stratification for serum erythropoietin concentration and transfusion burden. Patients were assigned to 0·5, 1·0, and 2·0 mg/kg groups in a non-randomised fashion. The primary efficacy endpoint was the proportion of patients who achieved haematological improvement-erythroid (HI-E), according to International Working Group 2006 criteria. Efficacy and safety analyses were done in the intention-to-treat population. This trial is registered at ClinicalTrials.gov, number NCT01736683 and at EU Clinical Trials Register, number 2012-002601-22, and is ongoing., Findings: Between Dec 5, 2012, and July 22, 2015, 74 patients were enrolled into the study (seven to receive 0·1 mg/kg sotatercept, six to 0·3 mg/kg, 21 to 0·5 mg/kg, 35 to 1·0 mg/kg, and five to 2·0 mg/kg). 36 (49%; 95% CI 38-60) of 74 patients achieved HI-E; 29 (47%; 95% CI 35-59) of 62 patients with a high transfusion burden achieved HI-E (RBC-transfusion reduction from baseline of 4 or more units for at least 56 days), and seven (58%; 95% CI 32-81) of 12 patients with a low transfusion burden achieved HI-E (haemoglobin increase of 1·5 g/dL or more sustained for at least 56 days in the absence of transfusions). The most commonly reported adverse events were fatigue in 19 (26%) of 74 patients and peripheral oedema in 18 (24%) of 74 patients. Grade 3-4 treatment-emergent adverse events (TEAEs) were reported in 25 (34%) of 74 patients; four (5%) patients had grade 3-4 TEAEs that were considered to be treatment related. The most common grade 3-4 TEAEs were lipase increase and anaemia, which each occurred in three (4%) of 74 patients. 17 (23%) of 74 patients had at least one serious TEAE, and one patient died from a treatment-emergent subdural haematoma due to a fall., Interpretation: Sotatercept, a novel activin-receptor fusion protein, was well tolerated and effective for the treatment of anaemia in patients with lower-risk myelodysplastic syndromes in whom previous ESA treatment had failed. Treatment with sotatercept could be beneficial for these patients who have few available treatment options., Funding: Celgene Corporation., (Copyright © 2018 Elsevier Ltd. All rights reserved.)
- Published
- 2018
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273. A randomized phase II trial of azacitidine +/- epoetin-β in lower-risk myelodysplastic syndromes resistant to erythropoietic stimulating agents.
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Thépot S, Ben Abdelali R, Chevret S, Renneville A, Beyne-Rauzy O, Prébet T, Park S, Stamatoullas A, Guerci-Bresler A, Cheze S, Tertian G, Choufi B, Legros L, Bastié JN, Delaunay J, Chaury MP, Sanhes L, Wattel E, Dreyfus F, Vey N, Chermat F, Preudhomme C, Fenaux P, and Gardin C
- Subjects
- Aged, Azacitidine administration & dosage, Biomarkers, Cytogenetic Analysis, DNA Mutational Analysis, Erythropoietin administration & dosage, Female, Hematinics therapeutic use, Humans, Male, Middle Aged, Myelodysplastic Syndromes diagnosis, Myelodysplastic Syndromes genetics, Myelodysplastic Syndromes mortality, Polymorphism, Single Nucleotide, Recombinant Proteins administration & dosage, Survival Analysis, Treatment Outcome, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Azacitidine therapeutic use, Drug Resistance, Myelodysplastic Syndromes drug therapy
- Abstract
The efficacy of azacitidine in patients with anemia and with lower-risk myelodysplastic syndromes, if relapsing after or resistant to erythropoietic stimulating agents, and the benefit of combining these agents to azacitidine in this setting are not well known. We prospectively compared the outcomes of patients, all of them having the characteristics of this subset of lower-risk myelodysplastic syndrome, if randomly treated with azacitidine alone or azacitidine combined with epoetin-β. High-resolution cytogenetics and gene mutation analysis were performed at entry. The primary study endpoint was the achievement of red blood cell transfusion independence after six cycles. Ninety-eight patients were randomised (49 in each arm). Median age was 72 years. In an intention to treat analysis, transfusion independence was obtained after 6 cycles in 16.3% versus 14.3% of patients in the azacitidine and azacitidine plus epoetin-β arms, respectively (P=1.00). Overall erythroid response rate (minor and major responses according to IWG 2000 criteria) was 34.7% vs. 24.5% in the azacitidine and azacitidine plus epoetin-β arms, respectively (P=0.38). Mutations of the SF3B1 gene were the only ones associated with a significant erythroid response, 29/59 (49%) versus 6/27 (22%) in SF3B1 mutated and unmutated patients, respectively, P=0.02. Detection of at least one "epigenetic mutation" and of an abnormal single nucleotide polymorphism array profile were the only factors associated with significantly poorer overall survival by multivariate analysis. The transfusion independence rate observed with azacitidine in this lower-risk population, but resistant to erythropoietic stimulating agents, was lower than expected, with no observed benefit of added epoetin, (clinicaltrials.gov identifier: 01015352)., (Copyright© Ferrata Storti Foundation.)
- Published
- 2016
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274. Are somatic mutations predictive of response to erythropoiesis stimulating agents in lower risk myelodysplastic syndromes?
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Kosmider O, Passet M, Santini V, Platzbecker U, Andrieu V, Zini G, Beyne-Rauzy O, Guerci A, Masala E, Balleari E, Bulycheva E, Dreyfus F, Fenaux P, Fontenay M, and Park S
- Subjects
- Disease-Free Survival, Female, Humans, Male, Risk Factors, Survival Rate, Hematinics administration & dosage, Mutation, Myelodysplastic Syndromes drug therapy, Myelodysplastic Syndromes genetics, Myelodysplastic Syndromes mortality
- Published
- 2016
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275. Validation of the revised international prognostic scoring system (IPSS-R) in patients with lower-risk myelodysplastic syndromes: a report from the prospective European LeukaemiaNet MDS (EUMDS) registry.
- Author
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de Swart L, Smith A, Johnston TW, Haase D, Droste J, Fenaux P, Symeonidis A, Sanz G, Hellström-Lindberg E, Cermák J, Germing U, Stauder R, Georgescu O, MacKenzie M, Malcovati L, Holm MS, Almeida AM, Mądry K, Slama B, Guerci-Bresler A, Sanhes L, Beyne-Rauzy O, Luño E, Bowen D, and de Witte T
- Subjects
- Adult, Aged, Aged, 80 and over, Female, Humans, Male, Middle Aged, Prognosis, Prospective Studies, Risk Factors, Myelodysplastic Syndromes diagnosis, Myelodysplastic Syndromes therapy, Registries
- Abstract
Baseline characteristics, disease-management and outcome of 1000 lower-risk myelodysplastic syndrome (MDS) patients within the European LeukaemiaNet MDS (EUMDS) Registry are described in conjunction with the validation of the revised International Prognostic Scoring System (IPSS-R). The EUMDS registry confirmed established prognostic factors, such as age, gender and World Health Organization 2001 classification. Low quality of life (EQ-5D visual analogue scale score) was significantly associated with reduced survival. A high co-morbidity index predicted poor outcome in univariate analyses. The IPSS-R identified a large group of 247 patients with Low (43%) and Very low (23%) risk score within the IPSS intermediate-1 patients. The IPSS-R also identified 32 High or Very high risk patients within the IPSS intermediate-1 patients. IPSS-R was superior to the IPSS for predicting both disease progression and survival. Seventy percent of patients received MDS-specific treatment or supportive care, including red blood cell transfusions (51%), haematopoietic growth factors (58%) and iron chelation therapy (8%), within 2 years of diagnosis; while 30% of the patients only required active monitoring. The IPSS-R proved its utility as a more refined risk stratification tool for the identification of patients with a very good or poor prognosis and in this lower-risk MDS population., (© 2015 John Wiley & Sons Ltd.)
- Published
- 2015
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276. Prevalence, severity and correlates of fatigue in newly diagnosed patients with myelodysplastic syndromes.
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Efficace F, Gaidano G, Breccia M, Criscuolo M, Cottone F, Caocci G, Bowen D, Lübbert M, Angelucci E, Stauder R, Selleslag D, Platzbecker U, Sanpaolo G, Jonasova A, Buccisano F, Specchia G, Palumbo GA, Niscola P, Wan C, Zhang H, Fenu S, Klimek V, Beyne-Rauzy O, Nguyen K, and Mandelli F
- Subjects
- Adult, Aged, Aged, 80 and over, Dyspnea epidemiology, Dyspnea etiology, Europe epidemiology, Fatigue blood, Fatigue epidemiology, Female, Hemoglobins metabolism, Humans, Male, Middle Aged, Myelodysplastic Syndromes blood, Myelodysplastic Syndromes epidemiology, Pain epidemiology, Pain etiology, Prevalence, Psychometrics, Quality of Life, Severity of Illness Index, Fatigue etiology, Myelodysplastic Syndromes complications
- Abstract
The primary objective of this study was to investigate factors associated with fatigue severity in newly diagnosed patients with higher-risk myelodysplastic syndromes (MDS). The secondary objectives were to assess symptom prevalence and to examine the relationships between fatigue, quality of life (QoL) and overall symptom burden in these patients. The analyses were conducted in 280 higher-risk MDS patients. Pre-treatment patient-reported fatigue was evaluated with the Functional Assessment of Chronic Illness Therapy (FACIT)-Fatigue scale and QoL was assessed with the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30). Female gender (P = 0·018), poor performance status (i.e., ECOG of 2-4) (P < 0·001) and lower levels of haemoglobin (Hb) (P = 0·026) were independently associated with higher fatigue severity. The three most prevalent symptoms were as follows: fatigue (92%), dyspnoea (63%) and pain (55%). Patients with higher levels of fatigue also had greater overall symptom burdens. The mean global QoL scores of patients with the highest versus those with the lowest levels of fatigue were 29·2 [standard deviation (SD), 18·3] and 69·0 (SD, 18·8), respectively and this difference was four times the magnitude of a clinically meaningful difference. Patient-reported fatigue severity revealed the effects of disease burden on overall QoL more accurately than did degree of anaemia. Special attention should be given to the female patients in the management of fatigue., (© 2014 John Wiley & Sons Ltd.)
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- 2015
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277. Intensive chemotherapy, azacitidine, or supportive care in older acute myeloid leukemia patients: an analysis from a regional healthcare network.
- Author
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Bories P, Bertoli S, Bérard E, Laurent J, Duchayne E, Sarry A, Delabesse E, Beyne-Rauzy O, Huguet F, and Récher C
- Subjects
- Aged, Aged, 80 and over, Female, France, Humans, L-Lactate Dehydrogenase, Leukemia, Myeloid, Acute diagnosis, Leukemia, Myeloid, Acute mortality, Lymphocyte Count, Male, Middle Aged, Multivariate Analysis, Prognosis, Prospective Studies, Regional Medical Programs, Survival Analysis, Antimetabolites, Antineoplastic therapeutic use, Antineoplastic Combined Chemotherapy Protocols, Azacitidine therapeutic use, Leukemia, Myeloid, Acute pathology, Leukemia, Myeloid, Acute therapy, Palliative Care
- Abstract
We assessed in a French regional healthcare network the distribution of treatments, prognostic factors, and outcome of 334 newly diagnosed acute myeloid leukemia patients aged 60 years or older over a 4-year period of time (2007-2010). Patients were selected in daily practice for intensive chemotherapy (n = 115), azacitidine (n = 95), or best supportive care (n = 124). In these three groups, median overall survival was 18.9, 11.3, and 1.8 months, respectively. In the azacitidine group, multivariate analysis showed that overall survival was negatively impacted by higher age (P = 0.010 for one unit increase), unfavorable cytogenetics (P = 0.001), lymphocyte count <0.5 G/L (P = 0.015), and higher lactate dehydrogenase level (P = 0.005 for one unit increase). We compared the survival of patients treated by azacitidine versus intensive chemotherapy and best supportive care using time-dependent analysis and propensity score matching. Patients treated by intensive chemotherapy had a better overall survival compared with those treated by azacitidine from 6 months after diagnosis, whereas patients treated by azacitidine had a better overall survival compared with those treated by best supportive care from 1 day after diagnosis. This study of "real life" practice shows that there is a room for low intensive therapies such as azacitidine in selected elderly acute myeloid leukemia patients., (© 2014 Wiley Periodicals, Inc.)
- Published
- 2014
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278. Characteristics and outcome of immune thrombocytopenia in elderly: results from a single center case-controlled study.
- Author
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Michel M, Rauzy OB, Thoraval FR, Languille L, Khellaf M, Bierling P, and Godeau B
- Subjects
- Adult, Aged, Aged, 80 and over, Case-Control Studies, Comorbidity, Female, France epidemiology, Hemorrhage epidemiology, Hemorrhage etiology, Humans, Length of Stay, Male, Middle Aged, Mortality, Platelet Count, Purpura, Thrombocytopenic, Idiopathic blood, Purpura, Thrombocytopenic, Idiopathic epidemiology, Retrospective Studies, Risk Factors, Treatment Outcome, Aging, Purpura, Thrombocytopenic, Idiopathic physiopathology, Purpura, Thrombocytopenic, Idiopathic therapy
- Abstract
The management of ITP in elderly raises several questions that have not been fully addressed in the literature. To assess the impact of ITP in elderly, a case-control study was performed. The main characteristics at onset and the outcome of ITP in 55 patients aged of 70 years and above (cases) were compared with those of 97 younger adults (controls) seen at the same tertiary referral institution. The mean age at diagnosis was respectively 77.8±6.1 years (cases) and 40.3±14.9 years (controls). While the median platelet count at time of diagnosis was not significantly different in cases and controls (6×10(9) /L, range: 2-26 versus 12×10(9) /L: 5-21.5), bleeding symptoms were more frequent in cases (82%) than in the controls (68%, p=0.07), and the median bleeding score was significantly higher in elderly (p=0.001). The rate of treatment-related adverse events was more than twofold higher in elderly patients and the mean cumulative duration of hospital stay for ITP during the follow-up period was much longer when compared to the controls (p<0.0001). Three ITP-related deaths (5.4%) including 1 from intracranial hemorrhage occurred in the cases but none in the controls. In conclusion, this study confirms that at equivalent platelet count, ITP has a greater impact in elderly., (Copyright © 2011 Wiley-Liss, Inc.)
- Published
- 2011
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279. Daily practice management of myelodysplastic syndromes in France: data from 907 patients in a one-week cross-sectional study by the Groupe Francophone des Myelodysplasies.
- Author
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Kelaidi C, Stamatoullas A, Beyne-Rauzy O, Raffoux E, Quesnel B, Guerci A, Dreyfus F, Brechignac S, Berthou C, Prebet T, Hicheri Y, Hacini M, Delaunay J, Gourin MP, Camo JM, Zerazhi H, Taksin AL, Legros L, Choufi B, and Fenaux P
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Antineoplastic Agents therapeutic use, Cohort Studies, Cross-Sectional Studies, Disease Management, Erythrocyte Transfusion trends, Erythropoietin therapeutic use, Female, France epidemiology, Hematopoietic Stem Cell Transplantation trends, Humans, Karyotyping, Male, Middle Aged, Myelodysplastic Syndromes genetics, Time Factors, Young Adult, Myelodysplastic Syndromes epidemiology, Myelodysplastic Syndromes therapy
- Abstract
Background: There is little published information on the everyday clinical management of myelodysplastic syndromes in real world practice., Design and Methods: We conducted a cross-sectional study of all patients with myelodysplastic syndromes attending 74 French centers in a 1-week period for inpatient admission, day-hospital care or outpatient visits., Results: Nine hundred and seven patients were included; 67.3% had lower-risk myelodysplastic syndromes (International Prognostic Scoring System: low or intermediate-1). Karyotype had been analyzed in 82.5% of the cases and was more often of intermediate or poor risk in patients under 65 years old compared with those who were older. Red blood cell transfusions accounted for as many as 31.4% of the admissions. Endogenous erythropoietin level was less than 500 IU/L in 88% of the patients tested. Erythroid stimulating agents had been or were being used in 36.8% of the lower risk patients, iron chelation in 31% of lower risk patients requiring red blood cell transfusions and lenalidomide in 41% of lower risk patients with del 5q. High-dose chemotherapy, hypomethylating agents, low dose cytarabine and allogeneic stem cell transplantation had been or were being used in 14.8%, 31.1%, 8.8% and 5.1%, respectively, of higher-risk patients., Conclusions: Karyotype is now assessed in most patients with myelodysplastic syndromes, and patients under 65 years old may have more aggressive disease. Apart from erythroid-stimulating agents and, in higher-risk myelodysplastic syndromes, hypomethylating agents, specific treatments are used in a minority of patients with myelodysplastic syndromes and red blood cell transfusions still represent the major reason for hospital admission.
- Published
- 2010
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280. TET2 gene mutation is a frequent and adverse event in chronic myelomonocytic leukemia.
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Kosmider O, Gelsi-Boyer V, Ciudad M, Racoeur C, Jooste V, Vey N, Quesnel B, Fenaux P, Bastie JN, Beyne-Rauzy O, Stamatoulas A, Dreyfus F, Ifrah N, de Botton S, Vainchenker W, Bernard OA, Birnbaum D, Fontenay M, and Solary E
- Subjects
- Aged, Aged, 80 and over, Comparative Genomic Hybridization, DNA Mutational Analysis statistics & numerical data, Dioxygenases, Female, Gene Frequency, Humans, Kaplan-Meier Estimate, Male, Middle Aged, Proportional Hazards Models, DNA-Binding Proteins genetics, Leukemia, Myelomonocytic, Chronic genetics, Mutation, Proto-Oncogene Proteins genetics
- Abstract
Background: Acquired somatic deletions and loss-of-function mutations in one or several codons of the TET2 (Ten-Eleven Translocation-2) gene were recently identified in hematopoietic cells from patients with myeloid malignancies, including myeloproliferative disorders and myelodys-plastic syndromes. The present study was designed to determine the prevalence of TET2 gene alterations in chronic myelomonocytic leukemias., Design and Methods: Blood and bone marrow cells were collected from 88 patients with chronic phase chronic myelomonocytic leukemia and from 14 with acute transformation of a previously identified disease. Polymerase chain reaction analysis and direct sequencing were used to sequence exons 3 to 11 of the TET2 gene. Annotated single nucleotide polymorphisms were excluded. Survival curves were constructed by the Kaplan-Meier method., Results: We detected TET2 mutations in 44 of 88 (50%) patients with chronic myelomonocytic leukemia, which suggests that TET2 gene mutations are especially frequent in this myeloid disease. A TET2 gene alteration was identified in 18 of the 43 patients studied at diagnosis and was associated with a trend to a lower overall survival rate; confining the analysis to the 29 patients with chronic myelomonocytic leukemia-1, according to the WHO classification, the difference in overall survival between patients with or without TET2 gene mutations became statistically significant., Conclusions: TET2 gene alterations are more frequent in chronic myelomonocytic leukemia than in other subgroups of hematopoietic diseases studied so far and could negatively affect the patients' outcome. The striking association between TET2 gene alterations and monocytosis, already observed in patients with systemic mastocytosis, could indicate a negative role of TET2 in the control of monocytic lineage determination.
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- 2009
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281. [Myelodysplastic syndromes in adults].
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Beyne-Rauzy O, Laurent G, and Adoue D
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- Adult, Humans, Prognosis, Myelodysplastic Syndromes classification, Myelodysplastic Syndromes genetics, Myelodysplastic Syndromes physiopathology, Myelodysplastic Syndromes therapy
- Abstract
Myelodysplastic syndromes (MDS) are clonal hematological disorders characterized by ineffective hematopoiesis. Their increased prevalence is associated with the aging of the population. The aim of this article is to analyze the available literature about MDS - its classification, pathophysiology, prognosis and recent progress in treatment - and report our experience with it. Its diagnosis and classification are based on the morphological features of blood and bone marrow cells. The World Health Organization (WHO) working group has proposed a new classification to improve the homogeneity of the categories in the widely-used French-American-British classification in term of pathophysiology and prognosis. This new classification permits the consideration of clinical, etiologic, and cytogenetic data, including complex and heterogeneous cytogenetic abnormalities. The International Scoring System for evaluating Prognosis (IPSS), which has proven highly useful for this purpose, is a risk-based classification system for MDS, based on these cytogenetic abnormalities. It can be used to help guide therapeutic choices. For MDS with low IPSS scores (low-risk), appropriate treatment includes best supportive care, hematopoietic growth factors, and immunomodulatory drugs. For MDS with high IPSS scores, chemotherapy is appropriate at low or intense doses. For younger patients, allogeneic bone marrow transplantation, the only truly curative treatment, may be considered. Better understanding of the pathophysiology of MDS, including the role of oncogenes and various cytokines, is required to develop new treatments and treatment targets. The new classification and prognosis scoring system should lead to new therapeutic strategies that may modify the overall prognosis and quality of life of patients with MDS.
- Published
- 2007
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282. Tumor necrosis factor-alpha inhibits hTERT gene expression in human myeloid normal and leukemic cells.
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Beyne-Rauzy O, Prade-Houdellier N, Demur C, Recher C, Ayel J, Laurent G, and Mansat-De Mas V
- Subjects
- Cells, Cultured, Ceramides metabolism, DNA-Binding Proteins biosynthesis, DNA-Binding Proteins metabolism, Enzyme Inhibitors pharmacology, Granulocyte-Macrophage Colony-Stimulating Factor pharmacology, Humans, Mitogen-Activated Protein Kinases metabolism, Telomerase biosynthesis, Telomerase metabolism, Tumor Necrosis Factor-alpha physiology, DNA-Binding Proteins genetics, Gene Expression Regulation drug effects, Leukemia enzymology, Leukemia genetics, Myeloid Cells drug effects, Myeloid Cells enzymology, Telomerase genetics, Tumor Necrosis Factor-alpha pharmacology
- Abstract
Telomerase catalytic subunit (hTERT) has been shown to play a critical role not only in telomere homeostasis but also in cellular survival, DNA repair, and genetic stability. In a previous study, we described that tumor necrosis factor-xalpha (TNFxalpha) induced in the leukemic KG1 cells a senescence state characterized by decreased hTERT activity followed by prolonged growth arrest, increasedx beta-galactosidase activity, telomere shortening, and major chromosomal instability. Interestingly, granulocyte-macrophage colony-stimulating factor (GM-CSF) abrogated all these events. In the present study, we show for the first time that TNFxalpha acts by inhibiting the hTERT gene in both normal CD34x+ cells and fresh leukemic cells. Using KG1 cells as a representative cellular model, we show that TNFxalpha induced sphingomyelin hydrolysis, ceramide production, and c-Jun N-terminal kinase (JNK) activation, all of which are critical components of TNFxalpha signaling, resulting in hTERT gene inhibition. Moreover, we provide evidence that the protective effect of GM-CSF is related to its capacity to interfere with both ceramide generation and ceramide signaling. Negative regulation of the hTERT gene may represent one mechanism by which TNFxalpha interferes with normal hemopoiesis.
- Published
- 2005
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283. [The prognosis of gestational pemphigoides].
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Beyne-Rauzy O, Delobel P, Fortenfant F, and Adoue D
- Subjects
- Female, Fluorescent Antibody Technique, Indirect, Humans, Pemphigoid Gestationis diagnosis, Pregnancy, Prognosis, Pemphigoid, Bullous diagnosis
- Published
- 2004
- Full Text
- View/download PDF
284. Tumor necrosis factor alpha induces senescence and chromosomal instability in human leukemic cells.
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Beyne-Rauzy O, Recher C, Dastugue N, Demur C, Pottier G, Laurent G, Sabatier L, and Mansat-De Mas V
- Subjects
- Base Sequence, Cell Line, Tumor, DNA Primers, DNA-Binding Proteins, Humans, Immunophenotyping, Leukemia, Myeloid, Acute immunology, Leukemia, Myeloid, Acute metabolism, Leukemia, Myeloid, Acute pathology, Telomerase genetics, Telomerase metabolism, Cellular Senescence, Chromosomal Instability, Tumor Necrosis Factor-alpha physiology
- Abstract
Previous studies have documented that Tumor necrosis factor alpha (TNFalpha) is a potent negative regulator of normal hematopoiesis. However, the mechanism by which TNFalpha acts at the cellular level is not totally understood. Although apoptotic cell killing appears to be the most common cellular effect of TNFalpha, other studies suggest that this cytokine may elicit other cellular responses such as prolonged growth inhibition. In this context, we have investigated whether TNFalpha may induce senescence in hematopoietic cells, which display intrinsic defect in the apoptotic machinery. The present study described that, in the leukemic KG1 cells, TNFalpha induced no apoptosis but a senescence state characterized by prolonged growth arrest, increased beta-galactosidase activity, p21WAF-1 induction, decreased telomerase activity, telomeric disturbances (shortening, losses, fusions), and additional chromosomal aberrations. Telomerase inhibition correlated with reduced levels of hTERT transcripts. GM-CSF prevented TNFalpha effects and allowed leukemic cells to recover growth capacity. Finally, our study shows for the first time that, at least in some hematopoietic cells, TNFalpha may induce senescence with important functional consequences, including sustained growth inhibition and genetic instability, and that this cellular response is efficiently regulated by hematopoietic growth factors.
- Published
- 2004
- Full Text
- View/download PDF
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