Publications by authors named "Didier Blaise"

In patients diagnosed with B-acute lymphoblastic leukemia (B-ALL) or B-non-Hodgkin's lymphoma (B-NHL) relapsing after allogeneic stem cell transplantation (allo-HCT), it is a standard practice to perform anti-CD19 chimeric antigen receptor (CAR) T-cell therapy. When collected from the patient after allo-HCT, the produced CAR-T cells are likely to be donor T-cell-derived, creating unknown safety risks due to their potential allo-reactivity. We therefore performed an EBMT registry-based study on the incidence of graft-versus-host disease (GvHD) in this setting.

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Autologous hematopoietic cell transplants (auto-HCTs) remain the standard of care for transplant-eligible MM patients. The general practice has been to undergo upfront apheresis following induction to collect sufficient number of CD34+ cells to facilitate two auto-HCTs. However, 5-30% of MM patients do not initially mobilise a sufficient number of hematopoietic stem cells and are classified as poor mobilizers (PM).

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  • Post-transplantation cyclophosphamide (PTCy) used with tacrolimus and low-dose anti-thymocyte globulin (PTCy-ATG) shows advantages in preventing chronic graft-versus-host disease (cGVHD) in patients who underwent stem cell transplants.
  • In a study of 71 patients with myeloid malignancies, the PTCy-ATG group had a lower incidence of moderate to severe cGVHD (11.5%) and a single case of bronchiolitis obliterans compared to control groups.
  • The study results indicated higher disease-free survival (94%) and overall survival (93%) rates in the PTCy-ATG group, suggesting the need for
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Sexual health is an important aspect of a person's life. Many patients and haematologists believe that intimacy and sexuality issues are substantial during cancer treatment. The haematological cancer disease, diagnosis, shock of the announcement, treatment, and follow-up appointments, can all have negative effects on the quality of life of patients, their partners, other family members, and friends.

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The best donor option for acute myeloid leukemia (AML) patients lacking an HLA-matched donor has remained intensively debated. We herein report the results of a large retrospective registry study comparing hematopoietic cell transplantation (HCT) outcomes between double-unit umbilical cord blood transplantation (dCBT, n = 209) versus 9/10 HLA-matched unrelated donor (UD) with posttransplant cyclophosphamide (PTCy)-based graft-versus-host disease (GVHD) prophylaxis (UD 9/10, n = 270) in patients with AML in first complete remission (CR1). Inclusion criteria consisted of adult patient, AML in CR1 at transplantation, either peripheral blood stem cells (PBSC) from UD 9/10 with PTCy as GVHD prophylaxis or dCBT without PTCy, transplantation between 2013 and 2021, and no in vivo T-cell depletion.

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  • A study analyzed outcomes of allogeneic hematopoietic stem cell transplantation (HSCT) for favorable risk Acute Myeloid Leukemia (AML) patients in complete remission across three time periods, involving 1850 patients.
  • Over the years from 2015 to 2021, older patients (≥60 years) and those with NPM1FLT3 diagnoses increased, while Haploidentical transplants also grew significantly.
  • The study found a reduction in chronic graft-versus-host disease and improved GVHD-free, relapse-free survival for patients transplanted after 2010 compared to earlier periods, though other outcomes showed no significant changes during the study period.
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We compared transplantation (HSCT) outcomes in AML patients undergoing HSCT with post-transplant cyclophosphamide (PTCy) in first complete remission from 1065 young (<35 years) haploidentical (Haplo) donors (yHaplo) vs. 147 old (≥35 years) mismatched unrelated donors (oMMUD) (first comparison) and from 271 young (<35 years) MMUD (yMMUD) vs. 1315 old (≥35 years) Haplo donors (oHaplo) (second comparison).

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  • This study examines the effects of IDH1 and IDH2 mutations on adult AML patients who received allogeneic hematopoietic cell transplantation, finding that 15.91% had IDH1 mutations and 26.27% had IDH2 mutations.* -
  • Patients with IDH1 and IDH2 mutations experienced lower rates of acute graft-versus-host disease (GVHD) compared to those without mutations, with significant improvements in overall survival (OS) linked to IDH1 mutations.* -
  • IDH2 mutations were associated with a lower relapse rate and better leukemia-free survival (LFS) and OS, particularly in patients without NPM1 mutations, indicating these mutations may lead to better outcomes post
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  • Core-binding factor acute myeloid leukemia (CBF-AML) accounts for 12-15% of AML cases, but despite a survival advantage for CBF positivity, overall survival rates are low.
  • Patients typically undergo chemotherapy with cytarabine and anthracycline, followed by allogeneic stem cell transplantation (allo-SCT) for relapse or high-risk cases, though its use in first complete remission (CR1) is debated.
  • A study involving 1,901 CBF-AML patients found that allo-SCT in CR1 is linked to worse outcomes compared to autologous transplantation (ASCT), particularly in terms of non-relapse mortality (NRM) and overall survival (OS).
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The use of tyrosine kinase inhibitors (TKIs) during induction and consolidation, followed by allogeneic hematopoietic cell transplantation (allo-HCT), is a standard of care for patients with Philadelphia (Ph)-positive acute lymphoblastic leukemia (ALL). The goal of this study was to compare results of allo-HCT according to the type of TKI used pre-transplant, either imatinib, dasatinib or both. This was a retrospective, registry-based analysis including adult patients with Ph-positive ALL treated with allo-HCT between years 2010-2022.

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Autologous(auto-) and allogeneic(allo-) hematopoietic stem cell transplantation (HSCT) are key treatments for relapsed/refractory diffuse large B-cell lymphoma (DLBCL), although their roles are challenged by CAR-T-cells and other immunotherapies. We examined the transplantation trends and outcomes for DLBCL patients undergoing auto-/allo-HSCT between 1990 and 2021 reported to EBMT. Over this period, 41,148 patients underwent auto-HSCT, peaking at 1911 cases in 2016, while allo-HSCT saw a maximum of 294 cases in 2018.

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Choice of calcineurin inhibitor may impact the outcome of patients undergoing T-cell replete hematopoietic cell transplantation (HCT) with post-transplant cyclophosphamide (PT-Cy) and mycophenolate mofetil (MMF) for prophylaxis of graft-versus-host disease (GVHD). We retrospectively analyzed 2427 patients with acute myeloid leukemia (AML) in first remission transplanted from a haploidentical (n = 1844) or unrelated donor (UD, n = 583) using cyclosporine A (CSA, 63%) or tacrolimus (TAC, 37%) and PT-Cy/MMF. In univariate analysis, CSA and TAC groups did not differ in 2-year leukemia-free or overall survival, cumulative incidence (CI) of relapse or non-relapse mortality.

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  • A study compared the effectiveness of posttransplant cyclophosphamide (PTCy) versus conventional calcineurin inhibitor (CNI)-based regimens for preventing graft-versus-host disease (GVHD) in patients with Hodgkin lymphoma undergoing hematopoietic stem cell transplantation (HSCT) from HLA-matched donors.
  • Results showed that while PTCy was linked to slower recovery of blood cells, it significantly reduced the risk of chronic GVHD and improved long-term survival measures, including overall survival (OS) and progression-free survival (PFS).
  • Overall, PTCy exhibited better outcomes in reducing relapse rates and improving survival compared to CNI-based prophylaxis in this patient group, suggesting it may be a
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In the context of T-cell replete haploidentical stem cell transplantation (Haplo-SCT) using post-transplantation cyclophosphamide (PT-Cy), it is still unknown whether peripheral blood (PB) or bone marrow (BM) is the best graft source. While PB is associated with a higher incidence of graft-versus-host disease (GVHD), it may induce a stronger graft-versus-leukemia effect compared to BM, notably in acute myeloid leukemia (AML). From the EBMT registry database, we compared T-cell replete PB (n = 595) versus BM (n = 209) grafts in a large cohort of 804 patients over the age of 60 years who underwent Haplo-SCT with PT-Cy for an AML in first or second complete remission.

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  • * An analysis of data from 3649 patients showed that ATG had worse outcomes in terms of nonrelapse mortality and overall survival compared to PTCy alone; however, the combination of PTCy and ATG significantly reduced GVHD occurrences without affecting other transplant outcomes.
  • * The authors suggest that while ATG monotherapy is less effective, the PTCy and ATG combination may establish a new
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  • - In patients with myelodysplastic syndrome (MDS), higher revised International Prognostic Scoring System (IPSS-R) scores are linked to poorer transplant outcomes, leading to the idea that lowering these scores before transplant could be helpful, but there's currently no evidence to back this up.
  • - A study analyzing 1,482 MDS patients found that changes in IPSS-R scores before transplantation did not significantly impact outcomes for untreated patients, while beneficial results were seen in those improved by chemotherapy.
  • - Overall, prior treatments including hypomethylating agents showed no clear advantage in improving transplant outcomes, suggesting that the effectiveness of pre-transplant therapies in altering IPSS-R scores is limited and raising questions about their role in managing
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There is a paucity of information on how to select the most appropriate unrelated donor (UD) in hematopoietic stem cell transplantation (HSCT) using posttransplant cyclophosphamide (PTCy). We retrospectively analyzed the characteristics of 10/10 matched UDs (MUDs) and 9/10 mismatched UDs (MMUDs) that may affect transplant outcomes in patients with acute myeloid leukemia (AML) in first or second complete remission (CR1 or CR2). The primary end point was leukemia-free survival (LFS).

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While post-transplant cyclophosphamide (PTCy) is commonly used as graft-versus-host disease (GvHD) prophylaxis in haploidentical stem cell transplantation (haplo-HSCT), its dose remains a matter of debate due to side effect concerns. Standard dose of 100 mg/kg associated with tacrolimus and post-engraftment anti-thymocyte globulin (ATG) was used as the reference GvHD prophylaxis in our center and had demonstrated encouraging results. Though PTCy 80 mg/kg was shown to be feasible in patients in reduced-intensity conditioning, whether it exerts equivalent GvHD prophylactic efficacy in myeloablative conditioning (MAC) setting has not been confirmed.

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We compared the outcomes of haploidentical stem cell transplantation (haplo-HSCT) with posttransplant cyclophosphamide (PTCy) in 719 patients with primary refractory (PR) or first relapse (Rel) secondary acute myeloid leukemia (sAML; n = 129) vs those with de novo AML (n = 590), who received HSCT between 2010 and 2022. A higher percentage of patients with sAML vs de novo AML had PR disease (73.6% vs 58.

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