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Blood Advances Sep 2019We studied 1110 patients with β-thalassemia major aged ≤25 years who received transplants with grafts from HLA-matched related (n = 677; 61%), HLA-mismatched related...
We studied 1110 patients with β-thalassemia major aged ≤25 years who received transplants with grafts from HLA-matched related (n = 677; 61%), HLA-mismatched related (n = 78; 7%), HLA-matched unrelated (n = 252; 23%), and HLA-mismatched unrelated (n = 103; 9%) donors between 2000 and 2016. Ninety percent of transplants were performed in the last decade. Eight-five percent of patients received ≥20 transfusions and 88% were inadequately chelated. All patients received myeloablative-conditioning regimen. Overall and event-free survival were highest for patients aged ≤6 years and after HLA-matched related and HLA-matched unrelated donor transplantation. The 5-year probabilities of overall survival for patients aged ≤6 years, 7 to 15 years, and 16 to 25 years, adjusted for donor type and conditioning regimen were 90%, 84%, and 63%, respectively ( < .001). The corresponding probabilities for event-free survival were 86%, 80%, and 63% ( < .001). Overall and event-free survival did not differ between HLA-matched related and HLA-matched unrelated donor transplantation (89% vs 87% and 86% vs 82%, respectively). Corresponding probabilities after mismatched related and mismatched unrelated donor transplantation were 73% vs 83% and 70% vs 78%. In conclusion, if transplantation is considered as a treatment option it should be offered early (age ≤6 years). An HLA-matched unrelated donor is a suitable alternative if an HLA-matched relative is not available.
Topics: Adolescent; Adult; Age Factors; Child; Child, Preschool; Hematopoietic Stem Cell Transplantation; Histocompatibility; Humans; Myeloablative Agonists; Surveys and Questionnaires; Survival Analysis; Tissue Donors; Transplantation Conditioning; Transplantation, Homologous; Unrelated Donors; Young Adult; beta-Thalassemia
PubMed: 31471325
DOI: 10.1182/bloodadvances.2019000291 -
Biology of Blood and Marrow... Apr 2014Haploidentical hematopoietic stem cell transplantation (HSCT) offers the benefits of rapid and nearly universal donor availability and has been accepted worldwide as an... (Review)
Review
Haploidentical hematopoietic stem cell transplantation (HSCT) offers the benefits of rapid and nearly universal donor availability and has been accepted worldwide as an alternative treatment for patients with hematologic malignancies who do not have a completely HLA-matched sibling or who require urgent transplantation. Unfortunately, serious infections and leukemia relapse resulting from slow immune reconstitution remain the 2 most frequent causes of mortality in patients undergoing haploidentical HSCT, particularly in those receiving extensively T cell-depleted megadose CD34(+) allografts. This review summarizes advances in immune recovery after haploidentical HSCT, focusing on the immune subsets likely to have the greatest impact on clinical outcomes. The progress made in accelerating immune reconstitution using different strategies after haploidentical HSCT is also discussed. It is our belief that a predictive immune subset-guided strategy to improve immune recovery might represent a future clinical direction.
Topics: Graft Survival; HLA Antigens; Haplotypes; Hematologic Neoplasms; Hematopoietic Stem Cell Transplantation; Histocompatibility Testing; Humans; Lymphocyte Depletion; Myeloablative Agonists; T-Lymphocytes; Transplantation Conditioning; Transplantation Tolerance; Transplantation, Homologous; Treatment Outcome
PubMed: 24315844
DOI: 10.1016/j.bbmt.2013.11.028 -
Biology of Blood and Marrow... Dec 2015Autologous stem cell transplantation (ASCT) after high-dose melphalan conditioning is considered a standard of care procedure for patients with multiple myeloma (MM)....
A Phase IIb, Multicenter, Open-Label, Safety, and Efficacy Study of High-Dose, Propylene Glycol-Free Melphalan Hydrochloride for Injection (EVOMELA) for Myeloablative Conditioning in Multiple Myeloma Patients Undergoing Autologous Transplantation.
Autologous stem cell transplantation (ASCT) after high-dose melphalan conditioning is considered a standard of care procedure for patients with multiple myeloma (MM). Current formulations of melphalan (eg, Alkeran for Injection [melphalan hydrochloride]; GlaxoSmithKline, Research Triangle Park, NC, USA) have marginal solubility and limited chemical stability upon reconstitution. Alkeran requires the use of propylene glycol as a co-solvent, which itself has been reported to cause such complications as metabolic/renal dysfunction and arrhythmias. EVOMELA (propylene glycol-free melphalan HCl; Spectrum Pharmaceuticals, Inc., Irvine, CA, USA) is a new i.v. melphalan formulation that incorporates Captisol (Ligand Pharmaceuticals, Inc., La Jolla, CA, USA), a specially modified cyclodextrin that improves the solubility and stability of melphalan and eliminates the need for propylene glycol. This new formulation has been shown to be bioequivalent to Alkeran. EVOMELA (200 mg/m(2)) was administered as 2 doses of 100 mg/m(2) each in a phase IIb, open-label, multicenter study to confirm its safety and efficacy as a high-dose conditioning regimen for patients with MM undergoing ASCT. At 5 centers, 61 patients (26 women) with a median age of 62 years (range, 32-73) were enrolled. All patients achieved myeloablation with a median time of 5 days post-ASCT, and all successfully achieved neutrophil and platelet engraftment with median times of 12 days post-ASCT and 13 days post-ASCT, respectively; treatment-related mortality on day 100 was 0%. Overall response rate (according to independent, blinded review) was high (100%), with an overall complete response rate of 21% (13% stringent complete response; 8% complete response) and overall partial response rate of 79% (61% very good partial response; 18% partial response). The incidence of grade 3 mucositis and stomatitis was low (10% and 5%, respectively) with no grade 4 mucositis or stomatitis reported (graded according to National Cancer Institute Common Terminology Criteria for Adverse Events). Based on investigators' assessment of mucositis using the World Health Organization (WHO) oral toxicity scale, 75% of patients had a shift in mucositis score from WHO grade 0 at baseline to a higher grade on study, of which 13% of patients reported WHO grade 3 as the worst post-treatment mucositis over the course of the study; there were no reports of WHO grade 4 mucositis during the study. This study confirms the efficacy and acceptable safety profile of EVOMELA, a new propylene glycol-free melphalan formulation, as a high-dose conditioning regimen for ASCT in patients with MM.
Topics: Adult; Aged; Cyclodextrins; Drug Administration Schedule; Female; Graft Survival; Hematopoietic Stem Cell Transplantation; Humans; Male; Melphalan; Middle Aged; Mucositis; Multiple Myeloma; Myeloablative Agonists; Propylene Glycol; Severity of Illness Index; Solubility; Stomatitis; Transplantation Conditioning; Transplantation, Autologous; Treatment Outcome
PubMed: 26327631
DOI: 10.1016/j.bbmt.2015.08.026 -
Blood Advances Oct 2019In the absence of prospective studies that examine the effect of conditioning regimen intensity after T-cell-replete haploidentical transplant for acute myeloid leukemia...
In the absence of prospective studies that examine the effect of conditioning regimen intensity after T-cell-replete haploidentical transplant for acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL), and myelodysplastic syndrome (MDS), a retrospective cohort analysis was performed. Of the 1325 eligible patients (AML, n = 818; ALL, n = 286; and MDS, n = 221), 526 patients received a myeloablative regimen and 799 received a reduced-intensity regimen. Graft-versus-host disease prophylaxis was uniform with posttransplant cyclophosphamide, a calcineurin inhibitor, and mycophenolate mofetil. The primary end point was disease-free survival. Cox regression models were built to study the effect of conditioning regimen intensity on transplant outcomes. For patients aged 18 to 54 years, disease-free survival was lower (hazard ratio [HR], 1.34; 42% vs 51%; = .007) and relapse was higher (HR, 1.51; 44% vs 33%; = .001) with a reduced-intensity regimen compared with a myeloablative regimen. Nonrelapse mortality did not differ according to regimen intensity. For patients aged 55 to 70 years, disease-free survival (HR, 0.97; 37% vs 43%; = .83) and relapse (HR, 1.32; 42% vs 31%; = .11) did not differ according to regimen intensity. Nonrelapse mortality was lower with reduced-intensity regimens (HR, 0.64; 20% vs 31%; = .02). Myeloablative regimens are preferred for AML, ALL, and MDS; reduced-intensity regimens should be reserved for those unable to tolerate myeloablation.
Topics: Adolescent; Adult; Disease-Free Survival; Female; Hematologic Neoplasms; Humans; Middle Aged; Myeloablative Agonists; Transplantation Conditioning; Transplantation, Haploidentical; Young Adult
PubMed: 31582392
DOI: 10.1182/bloodadvances.2019000627 -
The Journal of Allergy and Clinical... Apr 2013Bone marrow transplantation has resulted in life-saving sustained T-cell reconstitution in many infants with severe combined immunodeficiency (SCID), but correction of... (Review)
Review
Bone marrow transplantation has resulted in life-saving sustained T-cell reconstitution in many infants with severe combined immunodeficiency (SCID), but correction of B-cell function has been more problematic. At the annual meeting of the Primary Immunodeficiency Treatment Consortium held in Boston, Massachusetts, on April 27, 2012, a debate was held regarding the use of pretransplantation conditioning versus no pretransplantation conditioning in an effort to address this problem. Reviews of the literature were made by both debaters, and there was agreement that there was a higher rate of B-cell chimerism and a lower number of patients who required ongoing immunoglobulin replacement therapy in centers that used pretransplantation conditioning. However, there were still patients who required immunoglobulin replacement in those centers, and therefore pretransplantation conditioning did not guarantee development of B-cell function. Dr Rebecca H. Buckley presented data on B-cell function according to the molecular defect of the patient, and showed that patients with IL-7 receptor α, ADA, and CD3 chain gene mutations can have normal B-cell function after transplantation with only host B cells. Dr Elie Haddad presented a statistical analysis of B-cell function in published reports and showed that only a conditioning regimen that contained busulfan was significantly associated with better B-cell function after transplantation. The question is whether the risk of immediate and long-term toxicity with use of busulfan is justified, particularly in patients with SCID with DNA repair defects and in very young newborns with SCID who will be detected by using newborn screening.
Topics: Adenosine Deaminase; B-Lymphocytes; Bone Marrow Transplantation; Busulfan; CD3 Complex; Graft Survival; Humans; Immunoglobulins; Infant; Infant, Newborn; Myeloablative Agonists; Receptors, Interleukin-7; Severe Combined Immunodeficiency; Transplantation Chimera; Transplantation Conditioning
PubMed: 23465660
DOI: 10.1016/j.jaci.2013.01.047 -
The Keio Journal of Medicine 2018Graft-versus-host disease (GVHD) is a major contributor to early and late morbidity and mortality after allogeneic stem cell transplantation. Despite results from a...
Graft-versus-host disease (GVHD) is a major contributor to early and late morbidity and mortality after allogeneic stem cell transplantation. Despite results from a randomized controlled trial demonstrating an increased risk of chronic GVHD with use of growth factor-mobilized peripheral blood stem cells (PBSC) compared with bone marrow, PBSCs are the most widely used graft source in allogeneic transplantation for hematologic neoplasms in the U.S. This lecture will review established, recent, and novel strategies for GVHD prevention in unrelated donor PBSC transplantation and will highlight ongoing clinical research at Fred Hutchinson Cancer Research Center. Clinical trials aimed at defining standard-of-care GVHD prophylaxis after myeloablative and nonmyelablative conditioning will be presented. In addition, novel pharmacologic agents and graft manipulation strategies under investigation will be discussed. (Presented at the 1962nd Meeting, May 12, 2018).
Topics: Bone Marrow Transplantation; Graft vs Host Disease; Hematologic Neoplasms; Humans; Myeloablative Agonists; Peripheral Blood Stem Cell Transplantation; Transplantation Conditioning; Transplantation, Homologous; Unrelated Donors
PubMed: 29937455
DOI: 10.2302/kjm.67-001-ABST -
Turkish Journal of Haematology :... Sep 2015Sickle cell disease-related organ injuries cannot be prevented despite hydroxyurea use, infection prophylaxis, and supportive therapies. As a consequence,... (Review)
Review
Sickle cell disease-related organ injuries cannot be prevented despite hydroxyurea use, infection prophylaxis, and supportive therapies. As a consequence, disease-related mortality reaches 14% in adolescents and young adults. Hematopoietic stem cell transplantation is a unique curative therapeutic approach for sickle cell disease. Myeloablative allogeneic hematopoietic stem cell transplantation is curative for children with sickle cell disease. Current data indicate that long-term disease-free survival is about 90% and overall survival about 95% after transplantation. However, it is toxic in adults due to organ injuries. In addition, this curative treatment approach has several limitations, such as difficulties to find donors, transplant-related mortality, graft loss, graft-versus-host disease (GVHD), and infertility. Engraftment effectivity and toxicity for transplantations performed with nonmyeloablative reduced-intensity regimens in adults are being investigated in phase 1/2 trials at many centers. Preliminary data indicate that GVHD could be prevented with transplantations performed using reduced-intensity regimens. It is necessary to develop novel regimens to prevent graft loss and reduce the risk of GVHD.
Topics: Adolescent; Adult; Allografts; Anemia, Sickle Cell; Combined Modality Therapy; Female; Fertility Preservation; Graft vs Host Disease; Health Care Costs; Hematopoietic Stem Cell Transplantation; Histocompatibility; Humans; Male; Myeloablative Agonists; Tissue and Organ Procurement; Transplantation Conditioning; Treatment Outcome; Young Adult
PubMed: 25912490
DOI: 10.4274/tjh.2014.0311 -
British Journal of Haematology Jan 2007After decades of stagnation, the prognosis of patients with follicular lymphomas (FL) has changed substantially within the last few years due to new and effective... (Review)
Review
After decades of stagnation, the prognosis of patients with follicular lymphomas (FL) has changed substantially within the last few years due to new and effective therapeutic modalities. These include myeloablative therapy followed by autologous stem cell transplantation (ASCT) in younger patients in first remission, which showed a significant prolongation of remission duration in three prospective randomised trials while the impact on overall survival still needs to be determined. Adding the anti-CD 20 antibody Rituximab to conventional chemotherapy resulted in a significant increase in remission rate, remission duration and, in two of four currently available prospective randomised studies, even in a longer overall survival. A prolongation of remission duration was also seen when Rituximab was given as maintenance after cytoreductive therapy including Rituximab. Radio-immunotherapy (RIT) with radioisotopes coupled to monoclonal antibodies produced encouraging data in several phase II studies. New therapeutic perspectives have also emerged from increasing insights into the biology of the disease that unravel molecular targets for novel agents, some of which have entered clinical evaluation already.
Topics: Adoptive Transfer; Antibodies, Monoclonal; Antibodies, Neoplasm; Antineoplastic Agents; Hematopoietic Stem Cell Transplantation; Humans; Immunoglobulin Variable Region; Lymphoma, Follicular; Myeloablative Agonists; Radioimmunotherapy; Transplantation Conditioning; Transplantation, Autologous; Transplantation, Homologous; Treatment Outcome
PubMed: 17073892
DOI: 10.1111/j.1365-2141.2006.06378.x -
Biology of Blood and Marrow... Apr 2016Oral mucositis (OM) is a debilitating early adverse effect of allogeneic hematopoietic stem cell transplantation (HSCT). The intensity of the conditioning regimen... (Review)
Review
Oral mucositis (OM) is a debilitating early adverse effect of allogeneic hematopoietic stem cell transplantation (HSCT). The intensity of the conditioning regimen correlates with the incidence and severity of OM, but no studies have analyzed this relationship among various conditioning regimens. We performed a systematic review on the incidence and outcomes of OM in allogeneic HSCT patients and analyzed this association. A comprehensive search of several databases (Ovid Medline In-Process & Other Non-Indexed Citations, Ovid MEDLINE, Ovid EMBASE, Cochrane CRCT, Cochrane DSR, Scopus) from 1990 to 2014 for studies of OM in allogeneic HSCT patients was conducted. Professional societies' meeting abstracts were also searched. Grade of OM was analyzed based on the World Health Organization (WHO) or National Cancer Institutes (NCI) Common Terminology Criteria for Adverse Events scales. Severe mucositis was defined as either grades 2 to 4 or grades 3 and 4, depending on the studies' definition of severity. Cohorts were analyzed based on regimen intensity; ie, reduced-intensity conditioning (RIC) (including nonmyeloablative) and myeloablative (MA). Random effect (RE) and standard logistic models weighted by the number of patients in each cohort were used for comparisons. A total of 624 studies were generated from the search. Of the 395 patients in 8 eligible MA regimen studies, 73.2% experienced any OM, whereas in 245 patients in the 6 eligible RIC regimen studies, 86.5% experienced any OM (chi-square P < .0001; RE, P = .05). Severe (grades 2 to 4) OM occurred among 79.7% of the WHO/NCI-graded MA patients and 71.5% of RIC patients (chi-square, P = .0421; RE, P < .01). In comparing graft-versus-host disease (GVHD) prophylaxis, only 55.4% of patients receiving nonmethotrexate regimens experienced OM; this was lower (chi-square, P < .0001; RE, P = .06) than that found among patients who received methotrexate (83.4%), either standard or reduced dose. Besides NCI and WHO grading scales, other scales included in the studies were Oral Mucositis Index, the Southwest Oncology Group Criteria, and Eastern Cooperative Oncology Group scale. To our knowledge, this is the first analysis on OM in allogeneic HSCT patients with respect to conditioning regimens, and we observed that RIC regimens led to a high incidence of OM similar to that of MA regimens. Clinical trials on treatment of OM are lacking, emphasizing the essential need for prospective studies in this arena. A significant variance in the criteria for grading OM underscores the importance of establishing a standard grading system for OM measurement in future allogeneic HSCT clinical trials.
Topics: Busulfan; Cyclophosphamide; Graft vs Host Disease; Hematologic Neoplasms; Hematopoietic Stem Cell Transplantation; Humans; Incidence; Methotrexate; Mouth Mucosa; Myeloablative Agonists; Severity of Illness Index; Stomatitis; Transplantation Conditioning; Transplantation, Homologous; Vidarabine
PubMed: 26409924
DOI: 10.1016/j.bbmt.2015.09.014 -
Haematologica Jul 2015Acute myeloid leukemia is the most common indication for an allogeneic hematopoietic cell transplant. The introduction of reduced intensity conditioning has expanded the... (Review)
Review
Reduced intensity conditioning allogeneic hematopoietic cell transplantation for adult acute myeloid leukemia in complete remission - a review from the Acute Leukemia Working Party of the EBMT.
Acute myeloid leukemia is the most common indication for an allogeneic hematopoietic cell transplant. The introduction of reduced intensity conditioning has expanded the recipient pool for transplantation, which has importantly made transplant an option for the more commonly affected older age groups. Reduced intensity conditioning allogeneic transplantation is currently the standard of care for patients with intermediate or high-risk acute myeloid leukemia and is now most often employed in older patients and those with medical comorbidities. Despite being curative for a significant proportion of patients, post-transplant relapse remains a challenge in the reduced intensity conditioning setting. Herein we discuss the studies that demonstrate the feasibility of reduced intensity conditioning allogeneic transplants, compare the outcomes of reduced intensity conditioning versus chemotherapy and conventional myeloablative conditioning regimens, describe the optimal donor and stem cell source, and consider the impact of post-remission consolidation, comorbidities, center experience, and more intensive (reduced toxicity conditioning) regimens on outcomes. Additionally, we discuss the need for further prospective studies to optimize transplant outcomes.
Topics: Adult; Aged; Antineoplastic Combined Chemotherapy Protocols; Clinical Trials as Topic; Hematopoietic Stem Cell Transplantation; Humans; Leukemia, Myeloid, Acute; Middle Aged; Myeloablative Agonists; Remission Induction; Survival Analysis; Tissue Donors; Transplantation Conditioning; Transplantation, Homologous; Treatment Outcome
PubMed: 26130513
DOI: 10.3324/haematol.2015.123331