Publications by authors named "Agnes Guerci Bresler"

Background: Lenalidomide is the standard of care for patients who are transfusion dependent with chromosome 5q deletion (del[5q]) myelodysplastic syndromes. In the SintraREV trial, we aimed to investigate whether an early intervention of low lenalidomide doses for 2 years could delay transfusion dependency in patients with anaemia who were not transfusion dependent.

Methods: This randomised, double-blind, phase 3 trial, was conducted at 22 sites (University Hospitals) in Spain, France, and Germany.

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  • Chronic myeloid leukemia (CML) is treated with special pills called tyrosine kinase inhibitors, and one of them is called bosutinib.
  • Bosutinib is used to help adult patients with CML, either as a first treatment or if other treatments haven't worked.
  • Doctors found that bosutinib can cause side effects like stomach problems and liver issues, so a group of experts made guidelines to help manage these side effects and keep patients safe while they are being treated.
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  • - The study investigates the role of a specific oncofetal protein as a potential biomarker for chronic myeloid leukemia (CML), which is a cancer affecting blood-forming cells caused by genetic changes.
  • - Researchers employed various techniques, including cell culture and ELISA, to demonstrate that this protein is overexpressed in CML patients and may be linked to the disease's progression and severity.
  • - Findings indicate that the protein is upregulated in a kinase-dependent way and may significantly contribute to the mechanisms driving leukemogenesis in CML.
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Patients with myelodysplastic syndromes (MDS) frequently experience a significant symptom burden, which reduces health-related quality of life (HRQoL). We aimed to identify determinants of low HRQoL in patients recently diagnosed with MDS, for guiding early intervention strategies. We evaluated longitudinal data in 2205 patients with MDS during their first year after diagnosis.

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Information on causes of death (CoDs) and the impact of myelodysplastic syndromes (MDS) on survival in patients with lower-risk MDS (LR-MDS) is limited. A better understanding of the relationship between disease characteristics, clinical interventions and CoDs may improve outcomes of patients with LR-MDS. We prospectively collected data on patients with LR-MDS in the European MDS registry from 2008 to 2019.

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  • - RNA splicing factors can play roles as both cancer-promoting proteins (oncoproteins) and tumor suppressors, and their alteration in cancer drives interest in targeting splicing mechanisms for treatment.
  • - In a study on chronic myeloid leukemia (CML), researchers found that specific DNA methylation changes affected splicing in CML cells, indicating potential alterations in splicing proteins at diagnosis.
  • - The investigation revealed a distinct splicing profile in CML cells compared to healthy cells and showed that combining traditional treatments with a spliceosome-targeted drug enhanced efficacy against CML without harming healthy cells, suggesting new treatment avenues.
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  • * A total of 79 patients participated, and the primary goal was to assess the cumulative molecular response rates over 12 months, with results showing significant rates of deep molecular response at 5 years.
  • * While grade 3 neutropenia was common, it didn't lead to severe infections, and most patients continued the Peg-IFN treatment for a substantial time, resulting in notable molecular response rates after 12 and 24 months.
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  • Guidelines for managing chronic phase-chronic myeloid leukemia (CML) primarily rely on clinical trial data, but real-world data can enhance these recommendations, as seen in the French CML Observatory database study involving 646 patients.!
  • The analysis revealed that patients receiving second-generation tyrosine kinase inhibitors (2G-TKIs) achieve faster major molecular responses (MMR) and highlighted that being female and having residual disease at 6 months predicts better deep molecular response (DMR).!
  • Although 30% of patients qualified to stop treatment after 5 years, only 38% actually did, with a notable relapse rate of 31.5% among those who discontinued; early withdrawal is linked to higher
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  • Discontinuing tyrosine kinase inhibitors in chronic phase chronic myeloid leukemia (CML) is feasible, but more research is needed on factors that predict recurrence after stopping treatment and the long-term effects of treatment-free remission (TFR).
  • In a study updating data from the STIM2 trial, 199 patients were analyzed, showing a significant percentage (43.4%) achieved TFR at 5 years, but many experienced a loss of major molecular response over time.
  • The timing of molecular recurrence varied, with most recurrences occurring within the first 6 months after stopping treatment, and certain factors such as treatment duration and molecular response levels were linked to recurrence within the first 24 months but not later.
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  • MDS-RS patients experience chronic anemia and often become dependent on red blood cell transfusions, with a low risk of developing acute myeloid leukemia.
  • In a 6-month study involving 100 transfusion-dependent patients across 12 French centers, researchers examined transfusion patterns, hospitalization frequency, care costs, and related health issues.
  • Results showed that 79% of patients had a high transfusion burden, leading to increased hospital visits and significant treatment costs (16,188€ per patient), highlighting the need to evaluate more effective treatment options.
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In order to improve the outcome observed with azacitidine (AZA) in higher-risk Myelodysplastic syndrome (MDS), its combination with other drugs in MDS must be evaluated. So far, no combination has not been shown to be more effective than AZA alone. AZA-PLUS was a phase II trial that, in a "pick a winner" approach, randomly assigned patients with higher-risk MDS, CMML and low blast count AML to: AZA; AZA plus lenalidomide; AZA plus Valproic Acid or AZA plus Idarubicin.

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We present a noninvasive Web-based app to help exclude or diagnose myelodysplastic syndrome (MDS), a bone marrow (BM) disorder with cytopenias and leukemic risk, diagnosed by BM examination. A sample of 502 MDS patients from the European MDS (EUMDS) registry (n > 2600) was combined with 502 controls (all BM proven). Gradient-boosted models (GBMs) were used to predict/exclude MDS using demographic, clinical, and laboratory variables.

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Numerous combinations of signaling pathway blockades in association with tyrosine kinase inhibitor (TKI) treatment have been proposed for eradicating leukemic stem cells (LSCs) in chronic myeloid leukemia (CML), but none are currently clinically available. Because targeting protein kinase Cδ (PKCδ) was demonstrated to eliminate cancer stem cells (CSCs) in solid tumors, we evaluated the efficacy of PKCδ inhibition in combination with TKIs for CML cells. We observed that inhibition of PKCδ by a pharmacological inhibitor, by gene silencing, or by using K562 CML cells expressing dominant-negative (DN) or constitutively active (CA) PKCδ isoforms clearly points to PKCδ as a regulator of the expression of the stemness regulator BMI1.

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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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Data on outcome in older (≥70 years) patients with acute promyelocytic leukemia after treatment with arsenic trioxide (ATO) compared with standard chemotherapy (CTX) is scarce. We evaluated 433 patients (median age, 73.4 years) treated either with ATO+ all-trans retinoic acid (ATO/ATRA; n = 26), CTX/ATRA + ATO during consolidation (CTX/ATRA/ATO; n = 148), or with CTX/ATRA (n = 259).

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Purpose: Tyrosine kinase inhibitor (TKI) discontinuation is an emerging goal in chronic myelogenous leukemia (CML) management and several studies have demonstrated the feasibility of safely stopping imatinib. A sustained deep molecular response on long-term TKI is critical prior to attempting treatment-free remission. Reproducible results from several studies reported recently, failed to identify robust and reproducible predictive factors for the selection of the best candidates for successful TKI cessation.

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  • Iron overload from red blood cell transfusions can lead to serious health issues in lower-risk myelodysplastic syndrome (MDS) patients, with iron chelation therapy (ICT) potentially improving survival rates.
  • This study analyzed data from the European MDS registry to compare patients who received ICT with those who did not, using various statistical models to assess overall survival.
  • The results indicated that patients receiving ICT had significantly better survival rates and about 39% showed improvement in blood cell production, suggesting ICT could benefit transfused MDS patients.
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The effectiveness of tyrosine kinase inhibitors (TKIs) has made it possible to consider treatment discontinuation in chronic myeloid leukaemia (CML) patients that achieve an excellent response. However, a few of the patients included in the Europe Stop Tyrosine Kinase Inhibitors (EURO-SKI) trial reported musculoskeletal pain shortly after stopping TKIs, considered as a withdrawal syndrome (WS). To identify factors that may predispose to TKI WS, we analysed the pharmacovigilance declarations for the 6 months after stopping TKIs in a large cohort of CML (n = 427) that combined the French patients included in the STop IMatinib 2 (STIM2; n = 224) and EURO-SKI (n = 203) trials.

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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.

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Background: Data on Chronic Myeloid Leukemia (CML) prevalence are scarce. Here we provide an estimation of the prevalence of CML in France for the year 2014 using French national health insurance data.

Methods: We selected patients claiming reimbursement for tyrosine kinase inhibitors (TKI) or with hospital discharge diagnoses for CML, BCR/ABL-positive or with full reimbursement of health care expenses for myeloid leukemia.

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