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Clinical Strategies for Enhancing the Efficacy of CAR T-Cell Therapy for Hematological Malignancies. Cancers (Basel) 2022; 14:cancers14184452. [PMID: 36139611 PMCID: PMC9496667 DOI: 10.3390/cancers14184452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 08/31/2022] [Accepted: 09/03/2022] [Indexed: 11/16/2022] Open
Abstract
Chimeric antigen receptor (CAR) T cells have been successfully used for hematological malignancies, especially for relapsed/refractory B-cell acute lymphoblastic leukemia and non-Hodgkin’s lymphoma. Patients who have undergone conventional chemo-immunotherapy and have relapsed can achieve complete remission for several months with the infusion of CAR T-cells. However, side effects and short duration of response are still major barriers to further CAR T-cell therapy. To improve the efficacy, multiple targets, the discovery of new target antigens, and CAR T-cell optimization have been extensively studied. Nevertheless, the fact that the determination of the efficacy of CAR T-cell therapy is inseparable from the discussion of clinical application strategies has rarely been discussed. In this review, we will discuss some clinical application strategies, including lymphodepletion regimens, dosing strategies, combination treatment, and side effect management, which are closely related to augmenting and maximizing the efficacy of CAR T-cell therapy.
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Griffin JM, Healy FM, Dahal LN, Floisand Y, Woolley JF. Worked to the bone: antibody-based conditioning as the future of transplant biology. J Hematol Oncol 2022; 15:65. [PMID: 35590415 PMCID: PMC9118867 DOI: 10.1186/s13045-022-01284-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/06/2022] [Indexed: 11/29/2022] Open
Abstract
Conditioning of the bone marrow prior to haematopoietic stem cell transplant is essential in eradicating the primary cause of disease, facilitating donor cell engraftment and avoiding transplant rejection via immunosuppression. Standard conditioning regimens, typically comprising chemotherapy and/or radiotherapy, have proven successful in bone marrow clearance but are also associated with severe toxicities and high incidence of treatment-related mortality. Antibody-based conditioning is a developing field which, thus far, has largely shown an improved toxicity profile in experimental models and improved transplant outcomes, compared to traditional conditioning. Most antibody-based conditioning therapies involve monoclonal/naked antibodies, such as alemtuzumab for graft-versus-host disease prophylaxis and rituximab for Epstein–Barr virus prophylaxis, which are both in Phase II trials for inclusion in conditioning regimens. Nevertheless, alternative immune-based therapies, including antibody–drug conjugates, radio-labelled antibodies and CAR-T cells, are showing promise in a conditioning setting. Here, we analyse the current status of antibody-based drugs in pre-transplant conditioning regimens and assess their potential in the future of transplant biology.
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Affiliation(s)
- James M Griffin
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
| | - Fiona M Healy
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
| | - Lekh N Dahal
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
| | - Yngvar Floisand
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, UK.,The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, UK
| | - John F Woolley
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK.
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Hilaire MR, Gill RV, Courtney JB, Baburina I, Gardiner J, Milone MC, Shaw LM, Meng QH, Salamone SJ. Evaluation of a Nanoparticle-Based Busulfan Immunoassay for Rapid Analysis on Routine Clinical Analyzers. Ther Drug Monit 2021; 43:766-771. [PMID: 33814542 PMCID: PMC8594508 DOI: 10.1097/ftd.0000000000000883] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/01/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Busulfan is an alkylating agent used in allogeneic hematopoietic stem cell transplantation for various malignant and nonmalignant disorders. Therapeutic drug monitoring of busulfan is common because busulfan exposure has been linked to veno-occlusive disease, disease relapse, and failed engraftment. The authors developed an automated immunoassay, along with stable calibrators and controls, and quantified busulfan in sodium heparin plasma. METHODS The authors evaluated a homogenous nanoparticle immunoassay, the MyCare Oncology Busulfan Assay Kit (Saladax Biomedical, Inc), for precision, sensitivity, accuracy, and linearity on an open channel clinical chemistry analyzer; they compared the method with 2 mass spectrometry methods (liquid chromatography-tandem mass spectrometry and gas chromatography/mass spectrometry), using anonymized, remnant patient samples. RESULTS The coefficients of variation for repeatability and within-laboratory precision were ≤9.0%. The linear range was 150-2000 ng/mL; samples up to 6000 ng/mL can be measured with sample dilution. Measured values deviated by ≤14% from assigned values. Comparison between validated mass spectrometry methods resulted in a correlation coefficient R ≥ 0.995. CONCLUSIONS The MyCare Busulfan Assay Kit shows the precision, accuracy, linearity, and test range for performing busulfan concentration measurements in sodium heparin plasma on routine clinical chemistry analyzers.
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Affiliation(s)
| | | | | | | | - JoAnn Gardiner
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; and
| | - Michael C. Milone
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; and
| | - Leslie M. Shaw
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; and
| | - Qing H. Meng
- Department of Laboratory Medicine, the University of Texas MD Anderson Cancer Center, Houston, Texas
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4
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Ma Y, Zhang S, Fang H, Yu K, Jiang S. A phase I study of CAR-T bridging HSCT in patients with acute CD19 + relapse/refractory B-cell leukemia. Oncol Lett 2020; 20:20. [PMID: 32774493 DOI: 10.3892/ol.2020.11881] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 05/05/2020] [Indexed: 12/27/2022] Open
Abstract
Chimeric antigen receptor (CAR)-T cell therapy is a novel cellular immunotherapy for relapsed/refractory(R/R) B acute lymphoblastic leukemia (B-ALL). However, the survival duration of CAR-T cells in vivo is noteworthy, and in some cases recurrence occurs following CAR-T cell therapy. There is controversy over the benefits of bridging to allo-HSCT after CAR-T cell therapy. The present study explored the efficacy and safety of CD19 chimeric antigen receptor (CAR) T-bridged allogeneic hematopoietic stem cell transplantation (allo-HSCT) treatment in relapsed/refractory B-cell acute lymphocytic leukemia (R/R B-ALL). A total of 9 patients with B-ALL treated at The First Affiliated Hospital of Wenzhou Medical University between December 2016 and November 2017 were included. The results demonstrated that the total response rate on day 28 after receiving CD19-CAR T-cell therapy was 100% (9/9) and all patients exhibited complete remission. The 1-year overall survival (OS) rate for 5 patients who received CAR-T bridged HSCT was 100%, the 1-year DFS rate was 100%; the 1-year OS rate for the 4 patients who received CAR-T therapy was 75%, and the 1-year DFS rate was 75%. Patients who received CAR-T bridged to HSCT had no significant prolongation of myeloid and platelet engraftment median time compared with patients who received CAR-T alone, and the incidence of acute graft-versus-host disease or extensive chronic graft-versus-host disease did not increase. Overall, the present clinical trial demonstrated that CAR-T therapy bridging to HSCT is a feasible, safe and effective method to treat adult patients with R/R B-ALL.
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Affiliation(s)
- Yongyong Ma
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Shenghui Zhang
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Hongliang Fang
- R&D Department, Hrain Biotechnology Co. Ltd., Shanghai 200030, P.R. China
| | - Kang Yu
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Songfu Jiang
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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5
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Huttunen P, Taskinen M, Vettenranta K. Acute toxicity and outcome among pediatric allogeneic hematopoietic transplant patients conditioned with treosulfan-based regimens. Pediatr Hematol Oncol 2020; 37:355-364. [PMID: 32166994 DOI: 10.1080/08880018.2020.1738604] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Treosulfan-based regimens constitute a feasible and increasingly used, but still myeloablative, conditioning in pediatric allogeneic hematopoietic stem cell transplantation (HSCT). We retrospectively analyzed the acute toxicity and outcome of all consecutive (2004-2015) pediatric HSCT patients prepared for HSCT with treosulfan in a single-center setting. We included HSCTs performed for both nonmalignant (n = 23) and malignant diseases (n = 11). The controls were patients with nonmalignant diseases or hematological malignancies conditioned with cyclophosphamide (Cy)-total body irradiation (TBI)-based (39 patients) or busulfan-based regimens (11 patients). The major toxicities of the treosulfan-based regimens were limited to oral mucosa and skin. 50% of the patients needed IV morphine for severe mucositis compared to 31% in patients conditioned with Cy-TBI (P = 0.02). Other toxicities were rare. The disease-free survival (DFS) of patients transplanted for nonmalignant disorders was 88.9 ± 7.5% at 2 years. The event-free survival (EFS) at 2 years in this small cohort for those with a malignant disease and a treosulfan-based conditioning was 54.5 ± 1.5%. We conclude that a treosulfan-based conditioning regimen gives excellent DFS in pediatric HSCT performed for a nonmalignant disorder but with substantial mucosal toxicity. In a malignant disorder a treosulfan-based regimen looks promising but larger, preferably randomized, studies are needed to prove efficacy.
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Affiliation(s)
- Pasi Huttunen
- Division of Hematology-Oncology and Stem Cell Transplantation, New Children´s Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Mervi Taskinen
- Division of Hematology-Oncology and Stem Cell Transplantation, New Children´s Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Kim Vettenranta
- Division of Hematology-Oncology and Stem Cell Transplantation, New Children´s Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
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Contreras CF, Long-Boyle JR, Shimano KA, Melton A, Kharbanda S, Dara J, Higham C, Huang JN, Cowan MJ, Dvorak CC. Reduced Toxicity Conditioning for Nonmalignant Hematopoietic Cell Transplants. Biol Blood Marrow Transplant 2020; 26:1646-1654. [PMID: 32534101 DOI: 10.1016/j.bbmt.2020.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/29/2020] [Accepted: 06/02/2020] [Indexed: 12/13/2022]
Abstract
Allogeneic hematopoietic cell transplantation (HCT) for children with nonmalignant disorders is challenged by potential drug-related toxicities and poor engraftment. This retrospective analysis expands on our single pediatric medical center experience with targeted busulfan, fludarabine, and intravenous (IV) alemtuzumab as a low-toxicity regimen to achieve sustained donor engraftment. Sixty-two patients received this regimen for their first HCT for a nonmalignant disorder between 2004 and 2018. Donors were matched sibling in 27%, 8/8 HLA allele-matched unrelated in 50%, and 7/8 HLA allele-mismatched in 23% (some of whom received additional immunoablation with thiotepa or clofarabine). Five patients experienced graft failure for a cumulative incidence of 8.4% (95% CI, 1 to 16%). In engrafted patients, the median donor chimerism in whole blood and CD3, CD14/15, and CD19 subsets at 1-year were 96%, 90%, 99%, and 99%, respectively. Only one patient received donor lymphocyte infusions (DLIs) for poor chimerism. Two patients died following disease progression despite 100% donor chimerism. The 3-year cumulative incidence of treatment-related mortality was 10% (95% CI, 2 to 17%). Overall survival and event-free-survival at 3-years were 87% (95% CI, 78 to 95%) and 80% (95% CI, 70 to 90%), respectively. The 6-month cumulative incidence of grade II to IV acute graft-versus-host disease (GVHD) was 7% (95% CI, 3 to 13%), while the 3-year cumulative incidence of chronic GVHD was 5% (95% CI, 0 to 11%). These results suggest that use of targeted busulfan, fludarabine and IV alemtuzumab offers a well-tolerated option for children with nonmalignant disorders to achieve sustained engraftment with a low incidence of GVHD.
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Affiliation(s)
| | - Janel R Long-Boyle
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplantation, University of California San Francisco, Benioff Children's Hospital, San Francisco, California; Department of Clinical Pharmacy, University of California San Francisco, Benioff Children's Hospital, San Francisco, California
| | - Kristin A Shimano
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplantation, University of California San Francisco, Benioff Children's Hospital, San Francisco, California; Division of Pediatric Hematology and Oncology, University of California San Francisco, Benioff Children's Hospital, San Francisco, California
| | - Alexis Melton
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplantation, University of California San Francisco, Benioff Children's Hospital, San Francisco, California
| | - Sandhya Kharbanda
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplantation, University of California San Francisco, Benioff Children's Hospital, San Francisco, California
| | - Jasmeen Dara
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplantation, University of California San Francisco, Benioff Children's Hospital, San Francisco, California
| | - Christine Higham
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplantation, University of California San Francisco, Benioff Children's Hospital, San Francisco, California
| | - James N Huang
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplantation, University of California San Francisco, Benioff Children's Hospital, San Francisco, California; Division of Pediatric Hematology and Oncology, University of California San Francisco, Benioff Children's Hospital, San Francisco, California
| | - Morton J Cowan
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplantation, University of California San Francisco, Benioff Children's Hospital, San Francisco, California
| | - Christopher C Dvorak
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplantation, University of California San Francisco, Benioff Children's Hospital, San Francisco, California.
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Misra DP, Ahmed S, Agarwal V. Is biological therapy in systemic sclerosis the answer? Rheumatol Int 2020; 40:679-694. [PMID: 31960079 DOI: 10.1007/s00296-020-04515-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/07/2020] [Indexed: 12/19/2022]
Abstract
Systemic sclerosis is a systemic fibrosing disorder associated with significant morbidity and mortality, with no universally accepted disease-modifying therapy. Significant advances in the understanding of systemic sclerosis in recent years have guided the exploration of biological drugs in systemic sclerosis. In this narrative review, we summarize the published literature on biologic therapies in systemic sclerosis. A double-blind randomized trial, and an open label trial of tocilizumab (which antagonizes the interleukin 6 receptor), identified potential benefits in skin and lung fibrosis in systemic sclerosis; however, these differences failed to attain statistical significance. Two open-label trials compared rituximab (which depletes B lymphocytes) to conventional treatment/ cyclophosphamide in systemic sclerosis-associated interstitial lung disease (ILD), and revealed significant improvements in lung functions and skin disease with rituximab. Significant observational data also support the use of rituximab in skin, lung, muscle and joint manifestations of systemic sclerosis. Abatacept (which blocks T lymphocyte activation) has demonstrated utility for skin and joint disease in systemic sclerosis; a recent clinical trial failed to demonstrate benefits in improving skin thickness compared to placebo. Agents targeting type I interferons, interleukin 17 pathway, CD19 and plasma cells hold promise in systemic sclerosis; however, high-quality evidence is lacking. The results of different ongoing clinical trials targeting B lymphocytes, T lymphocytes, various cytokines (interleukins 6, 17, 4, 13, IL-1α), platelet-derived growth factor receptor, proteasome, integrins or oncostatin M may help guide future therapeutic regimens with biological agents in systemic sclerosis.
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Affiliation(s)
- Durga Prasanna Misra
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow, 226014, India.
| | - Sakir Ahmed
- Department of Clinical Immunology and Rheumatology, Kalinga Institute of Medical Sciences, Bhubaneswar, India
| | - Vikas Agarwal
- Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow, 226014, India
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Kawashima N, Iida M, Suzuki R, Fukuda T, Atsuta Y, Hashii Y, Inoue M, Kobayashi M, Yabe H, Okada K, Adachi S, Yuza Y, Kawa K, Kato K. Prophylaxis and treatment with mycophenolate mofetil in children with graft-versus-host disease undergoing allogeneic hematopoietic stem cell transplantation: a nationwide survey in Japan. Int J Hematol 2019; 109:491-498. [DOI: 10.1007/s12185-019-02601-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/16/2019] [Accepted: 01/17/2019] [Indexed: 11/29/2022]
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9
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Militano O, Ozkaynak MF, Mehta B, van deVen C, Hamby C, Cairo MS. Mycophenolate mofetil administered every 8 hours in combination with tacrolimus is efficacious in the prophylaxis of acute graft versus host disease in childhood, adolescent, and young adult allogeneic stem cell transplantation recipients. Pediatr Blood Cancer 2018; 65:e27091. [PMID: 29667720 DOI: 10.1002/pbc.27091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 02/26/2018] [Accepted: 03/20/2018] [Indexed: 01/14/2023]
Abstract
BACKGROUND The optimal dose and schedule of mycophenolate mofetil (MMF) in pediatric allogeneic stem cell transplant recipients remains to be determined. We previously reported safety and pharmacokinetics of MMF at 900 mg/m2 q6h dosing. This study was conducted to investigate the efficacy of tacrolimus plus q8h MMF dosing for acute graft versus host disease (GVHD) prophylaxis in a heterogeneous population of children, adolescent, young adult allogeneic stem cell transplant recipients, utilizing multiple allogeneic donor sources. PROCEDURE GVHD prophylaxis consisted of tacrolimus 0.03-0.04 mg/kg/day intravenous continuous infusion or 0.12-0.16 mg/kg/day orally divided q8-12h and MMF 900 mg/m2 /dose (max. 1.5 g) or 15 mg/kg/dose intravenous/orally (age ≥18 years) q8h starting on Day +1. MMF was discontinued on Day +30 or Day +60 in the absence of acute GVHD. Thirty-five children, adolescents, and young adult allogeneic stem cell transplant recipients with malignant and nonmalignant disorders were enrolled. RESULTS Kaplan-Meier probability of grade II-IV and grade III-IV acute GVHD was 22.8% (CI95 : 5.2-47.9 [where CI stands for confidence interval]) and 5.7% (CI95 : 0-48.9), respectively. Probability of extensive and limited chronic GVHD was 22.6% (CI95 : 3.4-52.2) and 12.2% (CI95 : 0.3-45.7), respectively. Probability of 1 year overall survival was 82% (CI95 : 64.1-99.8). Myeloablative conditioning was predictive of higher risk of acute GVHD in the univariate analysis (P = 0.01, hazard ratio = 6.6, CI95 : 0.91-48). CONCLUSION This study demonstrated a low probability of acute and chronic GVHD in a diverse cohort of childhood, adolescent, and young adult allogeneic stem cell transplant recipients following MMF q8h plus tacrolimus prophylaxis.
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Affiliation(s)
- Olga Militano
- Department of Pediatrics, Maria Fareri Children's Hospital at Westchester Medical Center, New York Medical College, Valhalla, New York.,Children's Oncology Group, Monrovia, California
| | - Mehmet F Ozkaynak
- Department of Pediatrics, Maria Fareri Children's Hospital at Westchester Medical Center, New York Medical College, Valhalla, New York
| | - Brinda Mehta
- Department of Pediatrics, Maria Fareri Children's Hospital at Westchester Medical Center, New York Medical College, Valhalla, New York
| | - Carmella van deVen
- Department of Pediatrics, Maria Fareri Children's Hospital at Westchester Medical Center, New York Medical College, Valhalla, New York
| | - Carl Hamby
- Department of Microbiology and Immunology, Maria Fareri Children's Hospital at Westchester Medical Center, New York Medical College, Valhalla, New York
| | - Mitchell S Cairo
- Department of Pediatrics, Maria Fareri Children's Hospital at Westchester Medical Center, New York Medical College, Valhalla, New York.,Department of Microbiology and Immunology, Maria Fareri Children's Hospital at Westchester Medical Center, New York Medical College, Valhalla, New York.,Departments of Medicine, Pathology, and Cell Biology and Anatomy, Maria Fareri Children's Hospital at Westchester Medical Center, New York Medical College, Valhalla, New York
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10
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Richards S, Choo S, Mechinaud F, Cole T. Single centre results of targeted busulphan, fludarabine and serotherapy conditioning in haematopoietic stem cell transplantation for haemophagocytic lymphohistiocytosis. Bone Marrow Transplant 2018. [DOI: 10.1038/s41409-018-0125-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Safety of liposomal cytarabine CNS prophylaxis in children, adolescent and young adult hematopoietic stem cell transplant recipients with acute leukemia and non-Hodgkin lymphoma. Bone Marrow Transplant 2016; 51:1249-52. [DOI: 10.1038/bmt.2016.100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zahler S, Bhatia M, Ricci A, Roy S, Morris E, Harrison L, van de Ven C, Fabricatore S, Wolownik K, Cooney-Qualter E, Baxter-Lowe LA, Luisi P, Militano O, Kletzel M, Cairo MS. A Phase I Study of Reduced-Intensity Conditioning and Allogeneic Stem Cell Transplantation Followed by Dose Escalation of Targeted Consolidation Immunotherapy with Gemtuzumab Ozogamicin in Children and Adolescents with CD33+ Acute Myeloid Leukemia. Biol Blood Marrow Transplant 2016; 22:698-704. [PMID: 26785332 DOI: 10.1016/j.bbmt.2016.01.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 01/11/2016] [Indexed: 10/22/2022]
Abstract
Myeloablative conditioning and allogeneic hematopoietic stem cell transplant (alloHSCT) in children with acute myeloid leukemia (AML) in first complete remission (CR1) may be associated with significant acute toxicity and late effects. Reduced-intensity conditioning (RIC) and alloHSCT in children is safe, feasible, and may be associated with less adverse effects. Gemtuzumab ozogamicin (GO) induces a response in 30% of patients with CD33+ relapsed/refractory AML. The dose of GO is significantly lower when combined with chemotherapy. We examined the feasibility and toxicity of RIC alloHSCT followed by GO targeted immunotherapy in children with CD33+ AML in CR1/CR2. Conditioning consisted of fludarabine 30 mg/m2 × 6 days, busulfan 3.2 to 4 mg/kg × 2 days ± rabbit antithymocyte globulin 2 mg/kg × 4 days followed by alloHSCT from matched related/unrelated donors. GO was administered ≥60 days after alloHSCT in 2 doses (8 weeks apart), following a dose-escalation design (4.5, 6, 7.5, and 9 mg/m2). Fourteen patients with average risk AML received RIC alloHSCT and post-GO consolidation: median age 13.5 years at transplant (range, 1 to 21), male-to-female 8:6, and disease status at alloHSCT 11 CR1 and 3 CR2. Eleven patients received alloHSCT from 5-6/6 HLA-matched family donors: 8 received peripheral blood stem cells, 2 received bone marrow, and 1 received related cord blood transplantation. Three patients received an unrelated allograft (two 4-5/6 and one 9/10) from unrelated cord blood unit and bone marrow, respectively. Neutrophil and platelet engraftment was observed in all assessable patients (100%), achieved at median 15.5 days (range, 7 to 31) and 21 days (range, 10 to 52), respectively. Three patients received GO at dose level 1 (4.5 mg/m2 per dose), 5 at dose level 2 (6 mg/m2 per dose), 3 at dose level 3 (7.5 mg/m2 per dose), and 3 at dose level 4 (9 mg/m2 per dose). Three of 14 patients received only 1 dose of GO after alloHSCT. One patient experienced grade III transaminitis, which resolved; no grade IV transaminitis, no grade III/IV hyperbilirubinemia, or sinusoidal obstructive syndrome were observed. The second dose of GO was given at median of 143 days (range, 120 to 209) after alloHSCT. Probability of grades II to IV acute and chronic graft-versus-host disease were 21% and 33.5%, respectively. Probability of overall survival after RIC alloHSCT and GO consolidation at 1 and 5 years was 78% and 61%, respectively. Probability of 5-year event-free survival after RIC alloHSCT and GO consolidation in patients in CR1 was 78%. No dose-limiting toxicities probably or directly related to GO were observed in this cohort. This preliminary data demonstrate that RIC followed by alloHSCT and consolidation with GO appears to be safe in children and adolescents with CD33+ AML in CR1/CR2. A phase II trial is currently underway investigating this approach with a GO dose of 9 mg/m2 per dose.
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Affiliation(s)
- Stacey Zahler
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | - Monica Bhatia
- Department of Pediatrics, Columbia University, New York, New York
| | - Angela Ricci
- Department of Pediatrics, Columbia University, New York, New York
| | - Sumith Roy
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | - Erin Morris
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | - Lauren Harrison
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | | | | | - Karen Wolownik
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | | | - Lee Ann Baxter-Lowe
- Department of Pathology, Children's Hospital of Los Angeles, Los Angeles, California
| | - Paul Luisi
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | - Olga Militano
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | - Morris Kletzel
- Department of Pediatrics, Northwestern University, Chicago, Illinois
| | - Mitchell S Cairo
- Department of Pediatrics, New York Medical College, Valhalla, New York; Departments of Medicine, Pathology, Microbiology and Immunology, and Cell Biology and Anatomy, New York Medical College, Valhalla, New York.
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13
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Geyer MB, Radhakrishnan K, Giller R, Umegaki N, Harel S, Kiuru M, Morel KD, LeBoeuf N, Kandel J, Bruckner A, Fabricatore S, Chen M, Woodley D, McGrath J, Baxter-Lowe L, Uitto J, Christiano AM, Cairo MS. Reduced Toxicity Conditioning and Allogeneic Hematopoietic Progenitor Cell Transplantation for Recessive Dystrophic Epidermolysis Bullosa. J Pediatr 2015; 167:765-9.e1. [PMID: 26148662 DOI: 10.1016/j.jpeds.2015.05.051] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 04/03/2015] [Accepted: 05/26/2015] [Indexed: 10/23/2022]
Abstract
Recessive dystrophic epidermolysis bullosa is a severe, incurable, inherited blistering disease caused by COL7A1 mutations. Emerging evidence suggests hematopoietic progenitor cells (HPCs) can be reprogrammed into skin; HPC-derived cells can restore COL7 expression in COL7-deficient mice. We report two children with recessive dystrophic epidermolysis bullosa treated with reduced-toxicity conditioning and HLA-matched HPC transplantation.
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Affiliation(s)
- Mark B Geyer
- Department of Medicine (Hematology and Medical Oncology), Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Kavita Radhakrishnan
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA
| | - Roger Giller
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO
| | - Noriko Umegaki
- Department of Dermatology, Columbia University, New York, NY
| | - Sivan Harel
- Department of Dermatology, Columbia University, New York, NY
| | - Maija Kiuru
- Department of Medicine (Dermatology Service), Memorial Sloan-Kettering Cancer Center, New York, NY; Department of Dermatology, Weill Cornell Medical College, New York, NY
| | - Kimberly D Morel
- Department of Dermatology, Columbia University, New York, NY; Department of Pediatrics, Columbia University, New York, NY
| | - Nicole LeBoeuf
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Jessica Kandel
- Department of Surgery, The University of Chicago Medicine Comer Children's Hospital, Chicago, IL
| | - Anna Bruckner
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO; Department of Dermatology, University of Colorado School of Medicine, Aurora, CO
| | | | - Mei Chen
- Department of Dermatology, University of Southern California, Los Angeles, CA
| | - David Woodley
- Department of Dermatology, University of Southern California, Los Angeles, CA
| | - John McGrath
- Department of Genetics and Molecular Medicine, King's College, London, United Kingdom
| | - LeeAnn Baxter-Lowe
- Department of Pathology and Laboratory Medicine, Children's Hospital of Los Angeles, Los Angeles, CA
| | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, The Thomas Jefferson University, Philadelphia, PA
| | - Angela M Christiano
- Department of Dermatology, Columbia University, New York, NY; Department of Genetics, Columbia University, New York, NY
| | - Mitchell S Cairo
- Department of Pediatrics, New York Medical College, Valhalla, NY; Department of Medicine, New York Medical College, Valhalla, NY; Department of Pathology, New York Medical College, Valhalla, NY; Department of Microbiology and Immunology, New York Medical College, Valhalla, NY; Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY.
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14
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Ngwube A, Hayashi RJ, Murray L, Loechelt B, Dalal J, Jaroscak J, Shenoy S. Alemtuzumab based reduced intensity transplantation for pediatric severe aplastic anemia. Pediatr Blood Cancer 2015; 62:1270-6. [PMID: 25755151 DOI: 10.1002/pbc.25458] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 01/08/2015] [Indexed: 01/07/2023]
Abstract
BACKGROUND Hematopoietic cell transplantation (HCT) is curative in patients with severe aplastic anemia (SAA). HCT is considered at presentation when a HLA-matched related donor (MRD) is available and has a high success rate. Unrelated donor (URD) transplants are typically undertaken if immunosuppressive therapy fails. Increased toxicity and graft rejection are often encountered in this setting. PROCEDURE We report a prospective multi-center trial of HCT in 17 children with SAA following novel reduced intensity conditioning with alemtuzumab, fludarabine and melphalan, and the best available donor. Nine were URD transplants matched at 7-8/8 loci, and performed following failure of immune suppression. Median follow up was 61 months (range 6-128). RESULTS All patients engrafted. Estimated 5 year event-free and overall-survival was 88% (95%CI 65.7-96.7). Five year overall survival for MRD and URD transplants was 100% and 78% (95%CI 45-93.6) respectively. Median times to neutrophil and platelet engraftment was 14 (range 10-27) and 23.5 (range 11-65) days respectively. Treatment related mortality was 12%. The incidence of grade II-IV and III-IV acute graft-versus-host disease was 29% and 18% respectively. At two years, all but one patient discontinued immunosuppression successfully. Laboratory measures of immune reconstitution normalized at one year and infection rates were low in the latter part of the first year. CONCLUSIONS HCT using this RIC approach was well tolerated and successful in achieving donor engraftment and early immune reconstitution with good quality of life free of immune suppression. Children with SAA can be successfully transplanted using alemtuzumab based conditioning.
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Affiliation(s)
- Alexander Ngwube
- Department of Pediatrics, Washington University in St. Louis, Missouri
| | - Robert J Hayashi
- Department of Pediatrics, Washington University in St. Louis, Missouri
| | - Lisa Murray
- Department of Pediatrics, Washington University in St. Louis, Missouri
| | - Brett Loechelt
- Blood/Marrow Transplantation and Immunology, Children's National Medical Center, District of Columbia
| | - Jignesh Dalal
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | | | - Shalini Shenoy
- Department of Pediatrics, Washington University in St. Louis, Missouri
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15
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Ishida H, Adachi S, Hasegawa D, Okamoto Y, Goto H, Inagaki J, Inoue M, Koh K, Yabe H, Kawa K, Kato K, Atsuta Y, Kudo K. Comparison of a fludarabine and melphalan combination-based reduced toxicity conditioning with myeloablative conditioning by radiation and/or busulfan in acute myeloid leukemia in Japanese children and adolescents. Pediatr Blood Cancer 2015; 62:883-9. [PMID: 25545836 DOI: 10.1002/pbc.25389] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 11/11/2014] [Indexed: 01/24/2023]
Abstract
BACKGROUND The relative efficacy of allogeneic hematopoietic cell transplantation (allo-HCT) after reduced toxicity conditioning (RTC) compared with standard myeloablative conditioning (MAC) in pediatric patients with acute myeloid leukemia (AML) has not been studied extensively. To address whether RTC is a feasible approach for pediatric patients with AML in remission, we performed a retrospective investigation of the outcomes of the first transplant in patients who had received an allo-HCT after RTC or standard MAC, using nationwide registration data collected between 2000 and 2011 in Japan. PROCEDURE We compared a fludarabine (Flu) and melphalan (Mel)-based regimen (RTC; n = 34) with total body irradiation (TBI) and/or busulfan (Bu)-based conditioning (MAC; n = 102) in demographic- and disease-criteria-matched childhood and adolescent patients with AML in first or second complete remission (CR1/CR2). RESULTS The incidence of engraftment, early complications, grade II-IV acute graft-versus-host disease (GVHD), and chronic GVHD were similar in each conditioning group. The risk of relapse (25% vs. 26%) and non-relapse mortality (13% vs. 11%) after 3 years did not differ between these groups, and univariate and multivariate analyses demonstrated that the 3-year overall survival (OS) rates after Flu/Mel-RTC and MAC were comparable (mean, 72% [range, 51-85%] and 68% [range, 58-77%], respectively). CONCLUSIONS The results suggest that the Flu/Mel-RTC regimen is a clinically acceptable conditioning strategy for childhood and adolescent patients with AML in remission. Although this retrospective, registry-based analysis has several limitations, RTC deserves to be further investigated in prospective trials.
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Affiliation(s)
- Hiroyuki Ishida
- Department of Pediatrics, Kyoto Prefectural University of Medicine, Kyoto, Japan; Division of Pediatrics, Matsushita Memorial Hospital, Moriguchi, Japan
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16
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Hematopoietic Cell Transplantation Using Reduced-Intensity Conditioning Is Successful in Children with Hematologic Cytopenias of Genetic Origin. Biol Blood Marrow Transplant 2015; 21:1321-5. [PMID: 25840334 DOI: 10.1016/j.bbmt.2015.03.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 03/21/2015] [Indexed: 12/31/2022]
Abstract
Genetically derived hematologic cytopenias are a rare heterogeneous group of disorders. Allogeneic hematopoietic cell transplantation (HCT) is curative but offset by organ toxicities from the preparative regimen, graft rejection, graft-versus-host disease (GVHD), or mortality. Because of these possibilities, consideration of HCT can be delayed, especially in the unrelated donor setting. We report a prospective multicenter trial of reduced-intensity conditioning (RIC) with alemtuzumab, fludarabine, and melphalan and HCT in 11 children with marrow failure of genetic origin (excluding Fanconi anemia) using the best available donor source (82% from unrelated donors). The median age at transplantation was 23 months (range, 2 months to 14 years). The median times to neutrophil (>500 × 10(6)/L) and platelet (>50 × 10(9)/L) engraftment were 13 (range, 12 to 24) and 30 (range, 7 to 55) days, respectively. The day +100 probability of grade II to IV acute GVHD and the 1-year probability of limited and extensive GVHD were 9% and 27%, respectively. The probability of 5-year overall and event-free survival was 82%; 9 patients were alive with normal blood counts at last follow-up and all were successfully off systemic immunosuppression. In patients with genetically derived severe hematologic cytopenias, allogeneic HCT with this RIC regimen was successful in achieving a cure. This experience supports consideration of HCT early in such patients even in the absence of suitable related donors.
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17
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Bhatia M, Kolva E, Cimini L, Jin Z, Satwani P, Savone M, George D, Garvin J, Paz ML, Briamonte C, Cruz-Arrieta E, Sands S. Health-related quality of life after allogeneic hematopoietic stem cell transplantation for sickle cell disease. Biol Blood Marrow Transplant 2015; 21:666-72. [PMID: 25559691 DOI: 10.1016/j.bbmt.2014.12.007] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 12/08/2014] [Indexed: 01/04/2023]
Abstract
Sickle cell disease (SCD) is a hereditary hemoglobinopathy that affects over 100,000 people in the United States. Patients with SCD are known to experience suboptimal health-related quality of life (HRQoL). In addition to the physical manifestations of SCD, psychological and social stress, along with academic difficulties, secondary to the chronicity of the disease and its complications often affect patients with SCD. Although medical therapy of SCD has improved, allogeneic hematopoietic cell transplantation (allo-HCT) remains the only curative therapy. The objective of this study was to measure HRQoL before and after allo-HCT by assessing physical, psychological, and social functioning in patients with SCD who have undergone reduced-toxicity conditioning (busulfan/fludarabine/alemtuzumab) followed by allo-HCT. Patients < 21 years of age undergoing allo-HCT (matched siblings and unrelated donors) for SCD and their primary caregiver were enrolled using either the English or Spanish version of the PedsQoL 4.0. Data were collected at 3 time points: before allo-HCT and on days 180 and 365 after allo-HCT. The change in HRQoL from baseline was assessed with unadjusted and adjusted mixed-effects models in which subjects were treated as random effects, and variance component structure was used. Seventeen patients and 23 primary caregivers were enrolled and reported a mean overall HRQoL of 66.05 (SD, 15.62) and 72.20 (SD, 15.50) at baseline, respectively. In the patient-reported analysis with adjusted mixed-effects models, the estimated improvements in overall HRQoL were 4.45 (SE, 4.98; P = .380) and 16.58 (SE, 5.06; P = .003) at 180 and 365 days, respectively, after allo-HCT. For parent-reported overall HRQoL, the estimated improvements were 1.57 (SE, 4.82; P = .747) and 9.28 (SE, 4.62; P = .053) at 180 and 365 days, respectively, after allo-HCT. Similar results were found across the physical, social, and emotional HRQoL domains with mixed-effects models after adjustment of demographic and medical variables. In addition to the alleviation of clinical manifestations of SCD, these patients demonstrated significant improvement in most aspects of HRQoL by 1 year after allo-HCT. These data represent the trajectory of HRQoL during the initial year of follow-up within this population and should be integrated into the decision-making process when considering allo-HCT in patients with SCD.
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Affiliation(s)
- Monica Bhatia
- Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Columbia University Medical Center, New York, New York
| | - Elissa Kolva
- Department of Psychology, Fordham University, New York, New York
| | - Laura Cimini
- Department of School Psychology, Teachers College, Columbia University, New York, New York
| | - Zhezhen Jin
- Department of Biostatistics, Columbia University, New York, New York
| | - Prakash Satwani
- Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Columbia University Medical Center, New York, New York
| | - Mirko Savone
- Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Columbia University Medical Center, New York, New York
| | - Diane George
- Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Columbia University Medical Center, New York, New York
| | - James Garvin
- Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Columbia University Medical Center, New York, New York
| | - Mary Llenell Paz
- Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, New York
| | - Courtney Briamonte
- Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Columbia University Medical Center, New York, New York
| | - Eduvigis Cruz-Arrieta
- Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Columbia University Medical Center, New York, New York
| | - Stephen Sands
- Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Columbia University Medical Center, New York, New York.
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18
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Optimizing drug therapy in pediatric SCT: focus on pharmacokinetics. Bone Marrow Transplant 2014; 50:165-72. [PMID: 25347008 DOI: 10.1038/bmt.2014.235] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 08/08/2014] [Accepted: 08/27/2014] [Indexed: 12/19/2022]
Abstract
Given age-related differences in drug metabolism and indications for hematopoietic SCT (HSCT), personalized drug dosing of the conditioning regimen and post-transplant immunosuppression may reduce graft rejection, relapse rates and toxicity in pediatric HSCT recipients. This manuscript summarizes the pharmacokinetic/dynamic data of HSCT conditioning and post-grafting immunosuppression, presented at the First Annual Pediatric Bone Marrow Transplant Consortium (PBMTC) meeting in April 2013. Personalized dosing of BU to a target plasma exposure reduces graft rejection in children and improves relapse/toxicity rates in adults. Current weight-based dosing achieves the target BU exposure in only a minority (24.3%) of children. The initial BU dose should be based on the European Medicines Agency nomogram or population pharmacokinetic models to improve the numbers of children achieving the target exposure. There are limited pharmacokinetic data for treosulfan, CY, fludarabine and alemtuzumab as HSCT conditioning in children. For post-grafting immunosuppression, mycophenolic acid (MPA) clearance may be increased in younger children (<12 years). The preferred MPA pharmacokinetic monitoring parameters and target range are still evolving in HSCT recipients. Multi-institutional trials incorporating properly powered pharmacokinetic/dynamic studies are needed to assess the effect of variability in the plasma exposure of drugs/metabolites on clinical outcomes in pediatric HSCT recipients.
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19
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Talano JA, Cairo MS. Hematopoietic stem cell transplantation for sickle cell disease: state of the science. Eur J Haematol 2014; 94:391-9. [PMID: 25200500 DOI: 10.1111/ejh.12447] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2014] [Indexed: 12/13/2022]
Abstract
Sickle cell disease (SCD) is an inherited disorder secondary to a point mutation at the sixth position of the beta chain of human hemoglobin resulting in the replacement of valine for glutamic acid. This recessive genetic abnormality precipitates the polymerization of the deoxygenated form of hemoglobin S inducing a major distortion of red blood cells (S-RBC), which decreases S-RBC deformability leading to chronic hemolysis and vaso-occlusion. These processes can result in severe complications including chronic pain, end-organ dysfunction, stroke, and early mortality. The only proven curative therapy for patients with SCD is myeloablative conditioning and allogeneic stem cell transplantation from HLA-matched sibling donors. In this review, we discuss the most recent advances in allogeneic stem cell transplantation in patients with SCD including more novel approaches such as reduced toxicity conditioning and the use of alternative allogeneic donors, including matched unrelated donors (MUDs), unrelated cord blood donors (UCBT), and familial haploidentical (FHI) donors. The results to date are very encouraging regarding allogeneic stem cell transplantation for patients with SCD including high survival rates and enabling a greater number of patients suffering from this chronic and debilitating condition to receive curative allogeneic stem cell therapies. However, we still have several areas to investigate and barriers to overcome to successfully cure the majority of patients with severe SCD through allogeneic stem cell therapies.
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Affiliation(s)
- Julie-An Talano
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA
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20
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Personalized busulfan and treosulfan conditioning for pediatric stem cell transplantation: the role of pharmacogenetics and pharmacokinetics. Drug Discov Today 2014; 19:1572-86. [DOI: 10.1016/j.drudis.2014.04.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/01/2014] [Accepted: 04/08/2014] [Indexed: 01/22/2023]
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21
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Oshrine BR, Olson TS, Bunin N. Mixed chimerism and graft loss in pediatric recipients of an alemtuzumab-based reduced-intensity conditioning regimen for non-malignant disease. Pediatr Blood Cancer 2014; 61:1852-9. [PMID: 24939325 DOI: 10.1002/pbc.25113] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 04/30/2014] [Indexed: 11/08/2022]
Abstract
BACKGROUND Reduced-intensity conditioning (RIC) regimens can mitigate the toxicity of hematopoietic cell transplantation (HCT) in children with non-malignant diseases, but are associated with increased risk for post-transplant mixed donor/recipient chimerism (MC) and/or graft loss (GL). Intervention with donor lymphocytes or stem cell boosts (DLI/boost) may be necessary, but there is limited information about timing and results of intervention. PROCEDURE We retrospectively evaluated 31 consecutive pediatric recipients of an alemtuzumab-based RIC HCT at the Children's Hospital of Philadelphia from May 2007 to December 2012 to determine the incidence of MC, GL, and use of DLI/boost. All patients received alemtuzumab with either fludarabine (150 mg/m(2) )/melphalan (140 mg/m(2) ) (n = 30) or fludarabine/busulfan (n = 1), and unmanipulated marrow grafts from related (48%) or matched unrelated (52%) donors. RESULTS Of surviving patients, 67% and 44% displayed MC and MC with ≤80% donor contribution (MC ≤ 80%), respectively. Rates of MC, MC ≤ 80%, DLI/boost, and GL were significantly higher in recipients of proximal/intermediate (100%, 73%, 46%, and 46%, respectively) compared to distal alemtuzumab (44%, 25%, 6%, and 6%, respectively). Event-free and overall survival was significantly lower in HLH compared with non-HLH patients. Twenty percent of patients required DLI/boost, and DLI/boost did not affect the incidence of GL. CONCLUSIONS RIC with proximal/intermediate alemtuzumab is associated with high rates of MC, need for DLI/boost, and GL.
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Affiliation(s)
- Benjamin R Oshrine
- Division of Oncology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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22
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Dvorak CC, Horn BN, Puck JM, Adams S, Veys P, Czechowicz A, Cowan MJ. A trial of alemtuzumab adjunctive therapy in allogeneic hematopoietic cell transplantation with minimal conditioning for severe combined immunodeficiency. Pediatr Transplant 2014; 18:609-16. [PMID: 24977928 PMCID: PMC4134761 DOI: 10.1111/petr.12310] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/28/2014] [Indexed: 12/31/2022]
Abstract
For infants with SCID the ideal conditioning regimen before allogeneic HCT would omit cytotoxic chemotherapy to minimize short- and long-term complications. We performed a prospective pilot trial with alemtuzumab monotherapy to overcome NK-cell mediated immunologic barriers to engraftment. We enrolled four patients who received CD34-selected haploidentical cells, two of whom failed to engraft donor T cells. The two patients who engrafted had delayed T-cell reconstitution, despite rapid clearance of circulating alemtuzumab. Although well-tolerated, alemtuzumab failed to overcome immunologic barriers to donor engraftment. Furthermore, alemtuzumab may slow T-cell development in patients with SCID in the setting of a T-cell depleted graft.
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Affiliation(s)
- Christopher C. Dvorak
- Division of Pediatric Allergy, Immunology, and Blood and Marrow Transplant, University of California San Francisco Benioff Children's Hospital
| | - Biljana N. Horn
- Division of Pediatric Allergy, Immunology, and Blood and Marrow Transplant, University of California San Francisco Benioff Children's Hospital
| | - Jennifer M. Puck
- Division of Pediatric Allergy, Immunology, and Blood and Marrow Transplant, University of California San Francisco Benioff Children's Hospital
| | - Stuart Adams
- Centre for Immunodeficiency, Molecular Immunology Unit, UCL Institute of Child Health, London, UK
| | - Paul Veys
- Centre for Immunodeficiency, Molecular Immunology Unit, UCL Institute of Child Health, London, UK
| | - Agnieszka Czechowicz
- Division of Blood & Marrow Transplantation, Stanford University School of Medicine
| | - Morton J. Cowan
- Division of Pediatric Allergy, Immunology, and Blood and Marrow Transplant, University of California San Francisco Benioff Children's Hospital
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23
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McGuinn C, Geyer MB, Jin Z, Garvin JH, Satwani P, Bradley MB, Bhatia M, George D, Duffy D, Morris E, van de Ven C, Schwartz J, Baxter-Lowe LA, Cairo MS. Pilot trial of risk-adapted cyclophosphamide intensity based conditioning and HLA matched sibling and unrelated cord blood stem cell transplantation in newly diagnosed pediatric and adolescent recipients with acquired severe aplastic anemia. Pediatr Blood Cancer 2014; 61:1289-94. [PMID: 24623601 DOI: 10.1002/pbc.24976] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 01/16/2014] [Indexed: 12/18/2022]
Abstract
BACKGROUND Cyclophosphamide-based conditioning regimens and allogeneic hematopoietic stem cell transplantation (AlloHSCT) from matched related donors (MRD) has resulted in the highest survival rates in children and adolescents with acquired severe aplastic anemia (SAA). Time to transplant has consistently been associated with decreased overall survival. Reduced toxicity conditioning and AlloHSCT has been used successfully in other pediatric non-malignant diseases. PROCEDURE We piloted a risk-adapted AlloHSCT approach, using fludarabine and anti-thymocyte globulin based conditioning with high (200 mg/kg) and low (60 mg/kg) dose cyclophosphamide as upfront treatment in newly diagnosed pediatric patients with acquired SAA incorporating alternative donor sources, including cord blood. Average risk for non-engraftment patients with <10 transfusions received low dose cyclophosphamide (60 mg/kg); High Risk, those with ≥10 transfusions received conditioning regimen with higher intensity cyclophosphamide (200 mg/kg). RESULTS Seventeen patients were enrolled and underwent AlloHSCT including 12 males and 5 females with mean age of 8 years (range 3-16), and median follow-up time of 39 months (range 1-135). Donor sources included MRD BM (6/6 [n = 9], 5/6 [n = 2]) and unrelated CB (5/6 [n = 4], 4/6 [n = 2]). Five year OS was 67.6% (37.9-85.4). Three secondary graft failures (17.6%) occurred in the low dose cyclophosphamide arm. CONCLUSIONS Upfront treatment with risk-adapted cyclophosphamide conditioning AlloSCT is well tolerated for the management of newly diagnosed pediatric and adolescent patients with acquired SAA. However, the increased risk of graft rejection in the lower dose arm warrants additional research regarding the optimal intensity of cyclophosphamide-based conditioning regimen to reduce toxicity without increasing graft failure.
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Affiliation(s)
- Catherine McGuinn
- Department of Pediatrics, Weill Cornell Medical College, New York, New York
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24
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Sequential myeloablative autologous stem cell transplantation and reduced intensity allogeneic hematopoietic cell transplantation is safe and feasible in children, adolescents and young adults with poor-risk refractory or recurrent Hodgkin and non-Hodgkin lymphoma. Leukemia 2014; 29:448-55. [PMID: 24938649 DOI: 10.1038/leu.2014.194] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 05/23/2014] [Accepted: 06/02/2014] [Indexed: 12/28/2022]
Abstract
The outcome of children, adolescents and young adults (CAYA) with poor-risk recurrent/refractory lymphoma is dismal (⩽30%). To overcome this poor prognosis, we designed an approach to maximize an allogeneic graft vs lymphoma effect in the setting of low disease burden. We conducted a multi-center prospective study of myeloablative conditioning (MAC) and autologous stem cell transplantation (AutoSCT), followed by a reduced intensity conditioning (RIC) and allogeneic hematopoietic cell transplantation (AlloHCT) in CAYA, with poor-risk refractory or recurrent lymphoma. Conditioning for MAC AutoSCT consisted of carmustine/etoposide/cyclophosphamide, RIC consisted of busulfan/fludarabine. Thirty patients, 16 Hodgkin lymphoma (HL) and 14 non-Hodgkin lymphoma (NHL), with a median age of 16 years and median follow-up of 5years, were enrolled. Twenty-three patients completed both MAC AutoSCT and RIC AlloHCT. Allogeneic donor sources included unrelated cord blood (n=9), unrelated donor (n=8) and matched siblings (n=6). The incidence of transplant-related mortality following RIC AlloHCT was only 12%. In patients with HL and NHL, 10 year EFS was 59.8% and 70% (P=0.613), respectively. In summary, this approach is safe, and long-term EFS with this approach is encouraging considering the poor-risk patient characteristics and the use of unrelated donors for RIC AlloHCT in the majority of cases.
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25
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Reduced toxicity, myeloablative conditioning with BU, fludarabine, alemtuzumab and SCT from sibling donors in children with sickle cell disease. Bone Marrow Transplant 2014; 49:913-20. [PMID: 24797180 DOI: 10.1038/bmt.2014.84] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 03/10/2014] [Accepted: 03/11/2014] [Indexed: 01/16/2023]
Abstract
BU and CY (BU/CY; 200 mg/kg) before HLA-matched sibling allo-SCT in children with sickle cell disease (SCD) is associated with ~85% EFS but is limited by the acute and late effects of BU/CY myeloablative conditioning. Alternatives include reduced toxicity but more immunosuppressive conditioning. We investigated in a prospective single institutional study, the safety and efficacy of a reduced-toxicity conditioning (RTC) regimen of BU 12.8-16 mg/kg, fludarabine 180 mg/m(2), alemtuzumab 54 mg/m(2) (BFA) before HLA-matched sibling donor transplantation in pediatric recipients with symptomatic SCD. Eighteen patients, median age 8.9 years (2.3-20.2), M/F 15/3, 15 sibling BM and 3 sibling cord blood (CB) were transplanted. Mean whole blood and erythroid donor chimerism was 91% and 88%, at days +100 and +365, respectively. Probability of grade II-IV acute GVHD was 17%. Two-year EFS and OS were both 100%. Neurological, pulmonary and cardiovascular function were stable or improved at 2 years. BFA RTC and HLA-matched sibling BM and CB allo-SCT in pediatric recipients result in excellent EFS, long-term donor chimerism, low incidence of GVHD and stable/improved organ function.
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26
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Qualter E, Satwani P, Ricci A, Jin Z, Geyer MB, Alobeid B, Radhakrishnan K, Bye M, Middlesworth W, Della-Letta P, Behr G, Muniz M, van de Ven C, Harrison L, Morris E, Cairo MS. A comparison of bronchoalveolar lavage versus lung biopsy in pediatric recipients after stem cell transplantation. Biol Blood Marrow Transplant 2014; 20:1229-37. [PMID: 24769329 DOI: 10.1016/j.bbmt.2014.04.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/17/2014] [Indexed: 11/28/2022]
Abstract
Bronchoalveolar lavage (BAL) has been a useful initial diagnostic tool in the evaluation of pulmonary complications after hematopoietic stem cell transplantation (HSCT); however, the diagnostic sensitivity, prevalence, and outcome after BAL versus lung biopsy (LB) in pediatric HSCT patients remains to be determined. We reviewed 193 pediatric HSCT recipients who underwent a total of 235 HSCTs. Sixty-five patients (34%) underwent a total of 101 BALs for fever, respiratory distress, and/or pulmonary infiltrates on chest radiograph and/or computed tomography scan. The 1-year probability of undergoing BAL was 43.0% after allogeneic stem cell transplantation (alloSCT) and 8.5% after autologous stem cell transplantation (autoSCT) (P = .001). Sixteen of the 193 patients (8%) patients underwent 19 LBs. The probability of undergoing LB at 1 year after HSCT was 9.3%. No grade III or IV adverse events related to either procedure were observed. Of the 101 BALs performed, 40% (n = 40) were diagnostic, with a majority revealing a bacterial pathogen. Among the 19 LBs performed, 94% identified an etiology. In multivariate analysis, myeloablative conditioning alloSCT conferred the highest risk of requiring a BAL (hazard ratio [HR],8.5; P = .0002). The probability of 2-year overall survival was 20.2% in patients who underwent BAL, 17.5% for patients who underwent biopsy, and 67.4% for patients who had neither procedure. In multivariate analysis, only the requirement of a BAL was independently associated with an increased risk of mortality (HR, 2.96; P < .0001). In summary, in this cohort of pediatric HSCT recipients, BAL and LB were used in approximately 35% and 8% of pediatric HSCTs with diagnostic yields of approximately 40% and 94%, respectively, and were both associated with poor long-term outcomes.
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Affiliation(s)
- Erin Qualter
- Department of Pediatrics, Columbia University, New York, New York
| | - Prakash Satwani
- Department of Pediatrics, Columbia University, New York, New York
| | - Angela Ricci
- Department of Pediatrics, Columbia University, New York, New York
| | - Zhezhen Jin
- Department of Biostatistics, Columbia University, New York, New York
| | - Mark B Geyer
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Bachir Alobeid
- Department of Pathology and Cell Biology, Columbia University, New York, New York
| | | | - Michael Bye
- Department of Pediatrics, Columbia University, New York, New York
| | | | - Phyllis Della-Letta
- Department of Pathology and Cell Biology, Columbia University, New York, New York
| | - Gerald Behr
- Department of Radiology, Columbia University, New York, New York
| | - Miguel Muniz
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | | | - Lauren Harrison
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | - Erin Morris
- Department of Pediatrics, New York Medical College, Valhalla, New York
| | - Mitchell S Cairo
- Department of Pediatrics, New York Medical College, Valhalla, New York; Department of Medicine, New York Medical College, Valhalla, New York; Department of Pathology, New York Medical College, Valhalla, New York; Department of Microbiology and Immunology, New York Medical College, Valhalla, New York; Department of Cell Biology and Anatomy, New York Medical College, Valhalla, New York.
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27
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Bartelink IH, van Reij EML, Gerhardt CE, van Maarseveen EM, de Wildt A, Versluys B, Lindemans CA, Bierings MB, Boelens JJ. Fludarabine and exposure-targeted busulfan compares favorably with busulfan/cyclophosphamide-based regimens in pediatric hematopoietic cell transplantation: maintaining efficacy with less toxicity. Biol Blood Marrow Transplant 2013; 20:345-53. [PMID: 24315842 DOI: 10.1016/j.bbmt.2013.11.027] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 11/29/2013] [Indexed: 02/05/2023]
Abstract
Busulfan (Bu) is used as a myeloablative agent in conditioning regimens before allogeneic hematopoietic cell transplantation (allo-HCT). In line with strategies explored in adults, patient outcomes may be optimized by replacing cyclophosphamide (Cy) with or without melphalan (Mel) with fludarabine (Flu). We compared outcomes in 2 consecutive cohorts of HCT recipients with a nonmalignant HCT indication, a myeloid malignancy, or a lymphoid malignancy with a contraindication for total body irradiation (TBI). Between 2009 and 2012, 64 children received Flu + Bu at a target dose of 80-95 mg·h/L, and between 2005 and 2008, 50 children received Bu targeted to 74-80 mg·h/L + Cy. In the latter group, Mel was added for patients with myeloid malignancy (n = 12). Possible confounding effects of calendar time were studied in 69 patients receiving a myeloablative dose of TBI between 2005 and 2012. Estimated 2-year survival and event-free survival were 82% and 78%, respectively, in the FluBu arm and 78% and 72%, respectively, in the BuCy (Mel) arm (P = not significant). Compared with the BuCy (Mel) arm, less toxicity was noted in the FluBu arm, with lower rates of acute (noninfectious) lung injury (16% versus 36%; P = .007), veno-occlusive disease (3% versus 28%; P = .003), chronic graft-versus-host disease (9% versus 26%; P = .047), adenovirus infection (3% versus 32%; P = .001), and human herpesvirus 6 infection reactivation (21% versus 44%; P = .005). Furthermore, the median duration of neutropenia was shorter in the FluBu arm (11 days versus 22 days; P < .001), and the patients in this arm required fewer transfusions. Our data indicate that Flu (160 mg/m(2)) with targeted myeloablative Bu (90 mg·h/L) is less toxic than and equally effective as BuCy (Mel) in patients with similar indications for allo-HCT.
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Affiliation(s)
- I H Bartelink
- Clinical Pharmacy, University Medical Center Utrecht, Utrecht, The Netherlands; Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, California
| | - E M L van Reij
- Clinical Pharmacy, University Medical Center Utrecht, Utrecht, The Netherlands
| | - C E Gerhardt
- Pediatric Blood and Marrow Transplantation Program, University Medical Center Utrecht, Utrecht, The Netherlands
| | - E M van Maarseveen
- Clinical Pharmacy, University Medical Center Utrecht, Utrecht, The Netherlands
| | - A de Wildt
- Pediatric Blood and Marrow Transplantation Program, University Medical Center Utrecht, Utrecht, The Netherlands
| | - B Versluys
- Pediatric Blood and Marrow Transplantation Program, University Medical Center Utrecht, Utrecht, The Netherlands
| | - C A Lindemans
- Pediatric Blood and Marrow Transplantation Program, University Medical Center Utrecht, Utrecht, The Netherlands
| | - M B Bierings
- Pediatric Blood and Marrow Transplantation Program, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jaap Jan Boelens
- Pediatric Blood and Marrow Transplantation Program, University Medical Center Utrecht, Utrecht, The Netherlands; U-DANCE, Section Tumorimmunology, Laboratory for Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.
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28
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Busulfan, Fludarabine, and Alemtuzumab Conditioning and Unrelated Cord Blood Transplantation in Children with Sickle Cell Disease. Biol Blood Marrow Transplant 2013; 19:676-7. [DOI: 10.1016/j.bbmt.2013.02.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 02/04/2013] [Indexed: 11/21/2022]
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29
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Transplantation-Related Mortality, Graft Failure, and Survival after Reduced-Toxicity Conditioning and Allogeneic Hematopoietic Stem Cell Transplantation in 100 Consecutive Pediatric Recipients. Biol Blood Marrow Transplant 2013; 19:552-61. [DOI: 10.1016/j.bbmt.2012.12.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 12/11/2012] [Indexed: 11/19/2022]
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30
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The pharmacokinetics and safety of twice daily i.v. BU during conditioning in pediatric allo-SCT recipients. Bone Marrow Transplant 2012; 48:19-25. [PMID: 22684047 DOI: 10.1038/bmt.2012.105] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Intravenous BU divided four times daily (q6 h) has been shown to be safe and effective in pediatric allo-SCT recipients. Though less frequent dosing is desirable, pharmacokinetic (PK) data on twice daily (q12 h) i.v. BU administration in pediatric allo-SCT recipients is limited. We prospectively examined the PK results in a cohort of pediatric allo-SCT recipients receiving i.v. BU q12 h as part of conditioning before allo-SCT. BU levels were obtained after the first dose of conditioning. PK parameter analysis (n=49) yielded the following 95% confidence intervals (CI₉₅): weight-normalized volume of distribution: 0.65-0.73 L/kg; t(1/2): 122-147 min; weight-normalized clearance (CL(n)): 3.4-4.3 mL/min/kg; and area under the curve: 1835-2180 mmol × min/L. From these results, a steady state concentration was calculated with CI₉₅ between 628-746 ng/mL. Comparison between recipients ≤4 vs >4 years old revealed significant differences in t(1/2) (mean: 115 vs 146 min, P=0.008) and CL(n) (mean: 4.4 vs 3.5 mL/min/kg, P=0.038). Intravenous BU q12 h had a comparable PK to i.v. BU q6 h PK seen in the literature, and in pediatric allo-SCT recipients, is a feasible, attractive alternative to i.v. q6h dosing.
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31
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Law J, Cowan MJ, Dvorak CC, Musick L, Long-Boyle JR, Baxter-Lowe LA, Horn B. Busulfan, fludarabine, and alemtuzumab as a reduced toxicity regimen for children with malignant and nonmalignant diseases improves engraftment and graft-versus-host disease without delaying immune reconstitution. Biol Blood Marrow Transplant 2012; 18:1656-63. [PMID: 22609040 DOI: 10.1016/j.bbmt.2012.05.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2012] [Accepted: 05/10/2012] [Indexed: 11/28/2022]
Abstract
For children receiving allogeneic hematopoietic stem cell transplants (HSCTs), the toxicity of the conditioning regimen and graft failure remain challenges. We previously reported that targeted i.v. busulfan, fludarabine, and rabbit anti-thymocyte globulin (rATG) decreased toxicity but had a graft failure rate of 21%. To improve the engraftment rate, we replaced ATG with alemtuzumab, a monoclonal Ab targeting CD52. Thirty-five children with malignant and nonmalignant diseases were enrolled in this phase II prospective study. Twelve children had HLA-matched related donors (MRDs), 16 had 10 of 10, and 7 had 9 of 10 HLA allele-matched unrelated donors (MUDs). Thirty-one of 34 evaluable patients (91%) achieved a durable engraftment. All 3 patients who rejected had a nonmalignant disease and received a MUD transplantation (2 mismatched at 1 antigen). Three patients died of a transplantation-related complication (9% ± 5.2%). Seven patients had disease relapse or progression, 2 of whom died. At a median follow-up of 35 months (range, 15-85 months), the event-free survival (EFS) was 61% ± 9.0% and the overall survival (OS) was 78% ± 7.5%. The median time to neutrophil recovery, B cell, and T cell reconstitution were 16 days, 3 months, and 6 months, respectively. At 1 year, the median donor chimerism in whole blood, CD3, CD14/15, and CD19 subsets were 97%, 87%, 100%, and 99%, respectively. Six patients (17% ± 6.6%) developed acute graft-versus-host disease (aGVHD), only 2 of which were >grade II. Two patients (8% ± 5.4%) progressed to chronic GVHD (cGVHD). These results suggest that replacement of rATG with alemtuzumab may improve engraftment as well as decrease cGVHD rates without resulting in delays in immune reconstitution.
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Affiliation(s)
- Jason Law
- Department of Pediatrics, Floating Hospital for Children, Tufts Medical Center, Boston, Massachusetts, USA
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32
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Geyer MB, Jacobson JS, Freedman J, George D, Moore V, van de Ven C, Satwani P, Bhatia M, Garvin JH, Bradley MB, Harrison L, Morris E, Della-Latta P, Schwartz J, Baxter-Lowe LA, Cairo MS. A comparison of immune reconstitution and graft-versus-host disease following myeloablative conditioning versus reduced toxicity conditioning and umbilical cord blood transplantation in paediatric recipients. Br J Haematol 2011; 155:218-34. [PMID: 21848882 DOI: 10.1111/j.1365-2141.2011.08822.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Immune reconstitution appears to be delayed following myeloablative conditioning (MAC) and umbilical cord blood transplantation (UCBT) in paediatric recipients. Although reduced toxicity conditioning (RTC) versus MAC prior to allogeneic stem cell transplantation is associated with decreased transplant-related mortality, the effects of RTC versus MAC prior to UCBT on immune reconstitution and risk of graft-versus-host disease (GVHD) are unknown. In 88 consecutive paediatric recipients of UCBT, we assessed immune cell recovery and immunoglobulin reconstitution at days +100, 180 and 365 and analysed risk factors associated with acute and chronic GVHD. Immune cell subset recovery, immunoglobulin reconstitution, and the incidence of opportunistic infections did not differ significantly between MAC versus RTC groups. In a Cox model, MAC versus RTC recipients had significantly higher risk of grade II-IV acute GVHD [Hazard Ratio (HR) 6·1, P = 0·002] as did recipients of 4/6 vs. 5-6/6 HLA-matched UCBT (HR 3·1, P = 0·03), who also had significantly increased risk of chronic GVHD (HR 18·5, P = 0·04). In multivariate analyses, MAC versus RTC was furthermore associated with significantly increased transplant-related (Odds Ratio 26·8, P = 0·008) and overall mortality (HR = 4·1, P = 0·0001). The use of adoptive cellular immunotherapy to accelerate immune reconstitution and prevent and treat opportunistic infections and malignant relapse following UCBT warrants further investigation.
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Affiliation(s)
- Mark B Geyer
- Department of Pediatrics, NewYork-Presbyterian Morgan Stanley Children's Hospital, Columbia University, New York, NY, USA
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