Publications by authors named "Laurent Voillat"

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  • The FIRE observational study assessed the effectiveness and safety of ibrutinib in patients with chronic lymphocytic leukemia (CLL) in France, with a maximum follow-up of five years post-treatment initiation.
  • The study included 388 patients and found median progression-free survival (PFS) of approximately 53 months for both retrospective and prospective patients, with no significant difference in PFS for those with or without dose reductions.
  • The most common adverse events were infections, with a notable percentage of patients experiencing treatment-emergent adverse events leading to death, though overall effectiveness and safety outcomes aligned with previous studies.
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  • - The phase II trial assessed the effectiveness of the RiBVD treatment (rituximab, bendamustine, velcade, and dexamethasone) in patients over 65 with mantle cell lymphoma (MCL), which resulted in a median progression-free survival of 79 months and overall survival of 111 months.
  • - TP53 mutation status and albumin levels were identified as significant prognostic factors, with TP53 mutations linked to a higher risk of shorter progression-free survival and overall survival in the analyzed patient population.
  • - A scoring system combining TP53 mutation status and albumin levels allowed differentiation of patient outcomes, indicating varying survival rates based on the presence of these factors, thus enhancing prognostic assessments
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  • Cytogenetic abnormalities are key indicators of prognosis in multiple myeloma, with del(1p32) identified as a significant negative factor after del(17p).
  • In a study of 2,551 newly diagnosed patients, those with del(1p32) had a much shorter overall survival (49 months) compared to those without it (124 months).
  • The impact of del(1p32) is even worse for patients with biallelic deletions, leading to a median overall survival of just 25 months, emphasizing the need for thorough assessment at diagnosis for appropriate treatment strategies.
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  • Systemic inflammatory and autoimmune diseases (SIADs) affect 10-20% of patients with myelodysplastic syndrome (MDS), with VEXAS syndrome being a newly identified condition linked to specific genetic mutations.
  • This study aimed to analyze myeloid immune cell types (dendritic cells and monocytes) in MDS patients with and without SIADs, revealing significant reductions in these cells in those with SIADs, particularly in those with VEXAS syndrome.
  • The findings suggest potential causes for the decreased immune cell counts, including movement to areas of inflammation, increased cell death, or issues with cell formation in the bone marrow.
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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.

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  • Primary plasma cell leukemia (pPCL) is a rare and aggressive form of multiple myeloma (MM) that hasn't improved with recent treatments and is not well understood at the molecular level.
  • Researchers conducted DNA and RNA sequencing on plasma cells from 90 newly diagnosed pPCL patients, revealing unique genomic traits, particularly a high incidence of the genetic abnormality t(11;14) and other high-risk features.
  • The study also found that pPCL patients with the t(11;14) abnormality had better overall survival rates (39.2 months) compared to those without it (17.9 months) and expressed different levels of specific genes related to the BCL2 family.
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Angioimmunoblastic T-cell lymphoma (AITL) is a frequent T-cell lymphoma in the elderly population that has a poor prognosis when treated with cyclophosphamide, doxorubicin, vincristine, and prednisone  (CHOP) therapy. Lenalidomide, which has been safely combined with CHOP to treat B-cell lymphoma, has shown efficacy as a single agent in AITL treatment. We performed a multicentric phase 2 trial combining 25 mg lenalidomide daily for 14 days per cycle with 8 cycles of CHOP21 in previously untreated AITL patients aged 60 to 80 years.

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Despite tremendous improvements in the outcome of patients with multiple myeloma in the past decade, high-risk patients have not benefited from the approval of novel drugs. The most important prognostic factor is the loss of parts of the short arm of chromosome 17, known as deletion 17p (del(17p)). A recent publication (on a small number of patients) suggested that these patients are at very high-risk only if del(17p) is associated with TP53 mutations, the so-called "double-hit" population.

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  • Lenalidomide effectively decreases the need for red blood cell transfusions in patients with MDS/MPN-RS-T.
  • It significantly reduces high platelet counts associated with the condition.
  • The treatment demonstrates notable improvements in blood-related symptoms for those with major platelet count issues.
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Immune thrombocytopenia (ITP) is a rare autoimmune disease due to autoantibodies targeting platelet glycoproteins (GP). The mechanism of platelet destruction could differ depending on the specificity of antiplatelet antibodies: anti-GPIIb/IIIa antibodies lead to phagocytosis by splenic macrophages, in a Fcγ receptor (FcγR)-dependent manner while anti-GPIb/IX antibodies induce platelet desialylation leading to their destruction by hepatocytes after binding to the Ashwell-Morell receptor, in a FcγR-independent manner. Considering the FcγR-dependent mechanism of action of intravenous immunoglobulins (IVIg), we assumed that the response to IVIg could be less efficient in the presence of anti-GPIb/IX antibodies.

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High-dose chemotherapy followed by autologous stem cell transplantation (ASCT) is a therapeutic option for patients with relapsed follicular lymphoma (FL). The clinical characteristics and outcomes of FL relapse after ASCT in the rituximab era have not yet been fully elucidated. We retrospectively reviewed 414 FL patients treated with ASCT between 2000 and 2014 in four hematology departments.

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Purpose: The wide heterogeneity in multiple myeloma (MM) outcome is driven mainly by cytogenetic abnormalities. The current definition of high-risk profile is restrictive and oversimplified. To adapt MM treatment to risk, we need to better define a cytogenetic risk classification.

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Purpose: Carfilzomib is a novel generation proteasome inhibitor. The Carmysap trial demonstrated that twice-weekly KMP (carfilzomib, melphalan, prednisone) might challenge the MPV (melphalan, prednisone, bortezomib) standard. We sought to study KMP weekly, allowing to increase carfilzomib's dose with maintained efficacy and improved safety profile.

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We present results of a prospective, multicenter, phase II study evaluating rituximab, bendamustine, bortezomib and dexamethasone as first-line treatment for patients with mantle cell lymphoma aged 65 years or older. A total of 74 patients were enrolled (median age, 73 years). Patients received a maximum of six cycles of treatment at 28-day intervals.

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Guidelines for monitoring multiple myeloma (MM) patients expressing light chains only (light-chain MM [LCMM]) rely on measurements of monoclonal protein in urine. Alternatively, serum free light chain (sFLC) measurements have better sensitivity over urine methods, however, demonstration that improved sensitivity provides any clinical benefit is lacking. Here, we compared performance of serum and urine measurements in 113 (72κ, 41λ) newly diagnosed LCMM patients enrolled in the Intergroupe Francophone du Myélome (IFM) 2009 trial.

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In newly diagnosed multiple myeloma (MM), patients ineligible for front-line autologous stem cell transplantation (ASCT), melphalan and prednisone (MP) with thalidomide (MPT) or bortezomib (VMP) are standard first-line therapeutic options. Despite new treatment regimens incorporating bortezomib or lenalidomide, MM remains incurable. The FIRST study demonstrated significant improvement in progression-free survival (PFS) and overall survival (OS) for the combination of lenalidomide and low-dose dexamethasone (Rd) until progression vs.

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The prognosis of multiple myeloma is mainly dependent upon chromosomal changes. The 2 major abnormalities driving poor outcome are del(17p) and t(4;14). However, the outcome of these high-risk patients is not absolutely uniform, with some patients presenting long survival.

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In multiple myeloma, cytogenetic changes are important predictors of patient outcome. In this setting, the most important changes are deletion 17p, del(17p), and translocation of chromosomes 4 and 14, t(4;14), conferring a poor outcome. However, a certain degree of heterogeneity is observed in the survival of these high-risk patients.

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