Publications by authors named "Margaret Macro"

Background: CASSIOPEIA part 1 demonstrated superior depth of response and prolonged progression-free survival with daratumumab in combination with bortezomib, thalidomide, and dexamethasone (D-VTd) versus bortezomib, thalidomide, and dexamethasone (VTd) alone as an induction and consolidation regimen in transplant-eligible patients newly diagnosed with myeloma. In CASSIOPEIA part 2, daratumumab maintenance significantly improved progression-free survival and increased minimal residual disease (MRD)-negativity rates versus observation. Here, we report long-term study outcomes of CASSIOPEIA.

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  • CD38-targeting immunotherapy combined with lenalidomide and dexamethasone is the current best standard of care for newly diagnosed multiple myeloma patients who can't undergo transplants.
  • A phase 3 study involving 270 patients tested the effectiveness of adding weekly bortezomib to this regimen, comparing the outcomes of the combination (Isa-VRd) against the standard (IsaRd).
  • Results showed a significantly higher rate of minimal residual disease negativity at 18 months and better response rates in the Isa-VRd group, suggesting it could become the new standard of care for these patients.
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The therapy of relapsed or refractory (r/r) mantle cell lymphoma (MCL) patients remains a major clinical challenge to date. We conducted a randomized, open-label, parallel-group phase-III trial hypothesizing superior efficacy of rituximab, high-dose cytarabine and dexamethasone with bortezomib (R-HAD + B) versus without (R-HAD) in r/r MCL ineligible for or relapsed after autologous stem cell transplant (ASCT). Primary endpoint was time to treatment failure (TTF), secondary endpoints included response rates, progression free survival, overall survival, and safety.

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Objectives: To characterize the impact of prior exposure and refractoriness to lenalidomide or proteasome inhibitors (PIs) on the effectiveness and safety of ixazomib-lenalidomide-dexamethasone (IRd) in relapsed/refractory multiple myeloma (RRMM).

Methods: INSURE is a pooled analysis of adult RRMM patients who had received IRd in ≥2 line of therapy from three studies: INSIGHT MM, UVEA-IXA, and REMIX.

Results: Overall, 391/100/68 were lenalidomide-naïve/-exposed/-refractory and 37/411/110 were PI-naïve/-exposed/-refractory.

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Multiple myeloma is characterized by a huge heterogeneity at the molecular level. The RAS/RAF pathway is the most frequently mutated, in ∼50% of the patients. However, these mutations are frequently subclonal, suggesting a secondary event.

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  • Bispecific antibodies (BsAbs) are used to treat relapsed or refractory multiple myeloma, but frequent infections were noted during clinical trials, indicating a need for further real-world data on infection risks and outcomes.
  • A multicenter retrospective study involving 229 patients in France from December 2020 to February 2023 found a high incidence of infections, with 234 recorded cases, primarily affecting the respiratory system, and a hospitalization rate of 56%.
  • The study identified corticosteroids used for managing cytokine release syndrome as a risk factor for infections, while using GPRC5D-targeting BsAbs and antibacterial prophylaxis was associated with a reduced risk.
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We pooled data from three observational studies (INSIGHT MM, UVEA-IXA and REMIX) to investigate the real-world effectiveness of ixazomib-lenalidomide-dexamethasone (IRd) in relapsed/refractory myeloma. INSIGHT MM was a prospective study conducted in countries across Europe, Asia and North/Latin America while UVEA-IXA and REMIX were multicenter, retrospective/prospective studies conducted in Europe. Patients who had received IRd as ≥2nd line of therapy were analyzed.

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Venous thromboembolism (VTE) remains a critical issue in the management of patients with multiple myeloma (MM), particularly when immunomodulatory drugs (IMiDs) combined with dexamethasone therapy are being prescribed as first-line and relapse therapy. One possible explanation for the persistent high rates of VTE, is the use of inappropriate thromboprophylaxis strategies for patients starting antimyeloma treatment. To tackle the issue, the Intergroupe francophone du myélome (IFM) offered convenient guidance for VTE thromboprophylaxis in MM patients initiating systemic therapy.

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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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Objective: Providing the most efficacious frontline treatment for newly diagnosed multiple myeloma (NDMM) is critical for patient outcomes. No direct comparisons have been made between bortezomib + lenalidomide + dexamethasone (VRD) and bortezomib + thalidomide + dexamethasone (VTD) induction regimens in transplant-eligible NDMM.

Methods: An integrated analysis was performed using patient data from four trials meeting prespecified eligibility criteria: two using VRD (PETHEMA GEM2012 and IFM 2009) and two using VTD (PETHEMA GEM2005 and IFM 2013-04).

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Hairy cell leukaemia (HCL) diagnosis is based on the morphologic detection of circulating abnormal hairy cells in the peripheral blood and/or bone marrow, an HCL immunological score of 3 or 4 based on the expression of the CD11c, CD25, CD103 and CD123 and also the presence of a BRAF V600E activating mutation in the B-raf proto-oncogene (BRAF gene) (7q34). When using new generation sequencing of 21 targeted genes in 124 HCL patients, we identified a cohort of 6/124 (2%) patients with unusual BRAF mutations: two patients presented non-V600 mutations (BRAF F595L, BRAF W604L respectively) and four other patients silent BRAF mutations. When using droplet digital PCR (ddPCR) three of the four patients with concomitant BRAF V600E and silent mutation were negative.

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Lenalidomide maintenance in myeloma is well established. Nevertheless, pomalidomide could provide an alternative. Myeloma patients in first relapse, initially treated in the Intergroupe Francophone du Myélome (IFM) 2009 trial, and subsequently in the IFM 2013-01 phase 2 trial, received four cycles of salvage therapy with pomalidomide plus cyclophosphamide plus dexamethasone (PCD) with transplantation plus 2 PCD consolidation or without transplantation but with 5 PCD and for all patients pomalidomide plus dexamethasone maintenance therapy.

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  • Familial forms of monoclonal gammopathy, including multiple myeloma (MM) and Monoclonal Gammopathy of Undetermined Significance (MGUS), are rare, with MGUS being more commonly observed and sometimes advancing to MM.
  • A study identified 318 families with multiple cases of monoclonal gammopathy, highlighting potential genetic links and family clusters with parent-child and sibling cases.
  • Despite some genetic similarities, familial cases generally present similarly to sporadic cases but show a better prognosis, with longer median survival rates for those with familial MM.
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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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Purpose: Multiple myeloma (MM) is characterized by copy number abnormalities (CNAs), some of which influence patient outcomes and are sometimes observed only at relapse(s), suggesting their acquisition during tumor evolution. However, the presence of micro-subclones may be missed in bulk analyses. Here, we use single-cell genomics to determine how often these high-risk events are missed at diagnosis and selected at relapse.

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  • High-dose melphalan (HDM) combined with bortezomib (Bor-HDM) was tested in a phase 3 trial for patients with multiple myeloma to see if it was more effective than HDM alone.* -
  • The trial included 300 patients, and results showed no significant differences in complete response rates or minimum residual disease rates between the two treatment groups.* -
  • Although progression-free survival was slightly better in the Bor-HDM group (34.0 months) compared to HDM (29.6 months), the overall survival rates and serious adverse events were similar, indicating Bor-HDM did not provide a clear advantage.*
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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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  • * The trial involves 176 hospitals across 14 countries and includes patients aged 18 or older, evaluating their survival rates and safety over several treatment cycles.
  • * Early results show a significant improvement in progression-free survival for the combination therapy compared to the control group, emphasizing the potential benefits of this treatment approach for eligible patients.
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Background: CASSIOPEIA part 1 showed superior depth of response and significantly improved progression-free survival with daratumumab, bortezomib, thalidomide, and dexamethasone (D-VTd) versus bortezomib, thalidomide, and dexamethasone (VTd) as induction and consolidation in patients with autologous stem-cell transplant (ASCT)-eligible newly diagnosed multiple myeloma. In part 2, we compared daratumumab maintenance versus observation only.

Methods: CASSIOPEIA is a two-part, open-label, randomised, phase 3 trial of patients aged 18-65 years with newly diagnosed multiple myeloma and Eastern Cooperative Oncology Group performance status 0-2, done in 111 European academic and community practice centres.

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