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Ben Hassine K, Daali Y, Gloor Y, Nava T, Théorêt Y, Krajinovic M, Bittencourt H, Satyanarayana Uppugunduri CR, Ansari M. Simulation-Based Optimization of Sampling Schedules for Model-Informed Precision Dosing of Once-Daily and 4-Times-Daily Busulfan in Pediatric Patients. Ther Drug Monit 2024:00007691-990000000-00240. [PMID: 38885146 DOI: 10.1097/ftd.0000000000001217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 03/25/2024] [Indexed: 06/20/2024]
Abstract
BACKGROUND Therapeutic drug monitoring (TDM) is crucial in optimizing the outcomes of hematopoietic stem cell transplantation by guiding busulfan (Bu) dosing. Limited sampling strategies show promise for efficiently adjusting drug doses. However, comprehensive assessments and optimization of sampling schedules for Bu TDM in pediatric patients are limited. We aimed to establish optimal sampling designs for model-informed precision dosing (MIPD) of once-daily (q24h) and 4-times-daily (q6h) Bu administration in pediatric patients. METHODS Simulated data sets were used to evaluate the population pharmacokinetic model-based Bayesian estimation of the area under the concentration-time curve (AUC) for different limited sampling strategy designs. The evaluation was based on the mean prediction error for accuracy and root mean square error for precision. These findings were validated using patient-observed data. In addition, the MIPD protocol was implemented in the Tucuxi software, and its performance was assessed. RESULTS Our Bayesian estimation approach allowed for flexible sampling times while maintaining mean prediction error within ±5% and root mean square error below 10%. Accurate and precise AUC0-24h and cumulative AUC estimations were obtained using 2-sample and single-sample schedules for q6h and q24h dosing, respectively. TDM on 2 separate days was necessary to accurately estimate cumulative exposure, especially in patients receiving q6h Bu. Validation with observed patient data confirmed the precision of the proposed limited sampling scenarios. Implementing the MIPD protocol in Tucuxi software yielded reliable AUC estimations. CONCLUSIONS Our study successfully established precise limited sampling protocols for MIPD of Bu in pediatric patients. Our findings underscore the importance of TDM on at least 2 occasions to accurately achieve desired Bu exposures. The developed MIPD protocol and its implementation in Tucuxi software provide a valuable tool for routine TDM in pediatric hematopoietic stem cell transplantation.
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Affiliation(s)
- Khalil Ben Hassine
- CANSEARCH Research Platform for Pediatric Oncology and Hematology, Department of Pediatrics, Gynecology, and Obstetrics, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Youssef Daali
- Division of Clinical Pharmacology and Toxicology, University Hospital of Geneva, Geneva, Switzerland
- Faculty of Medicine & Sciences, University of Geneva, Geneva, Switzerland
| | - Yvonne Gloor
- CANSEARCH Research Platform for Pediatric Oncology and Hematology, Department of Pediatrics, Gynecology, and Obstetrics, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Tiago Nava
- Charles-Bruneau Cancer Center, CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
- Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada
- Clinical Pharmacology Unit, CHU Sainte-Justine, Montreal, Quebec, Canada; and
| | - Yves Théorêt
- Charles-Bruneau Cancer Center, CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
- Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada
- Clinical Pharmacology Unit, CHU Sainte-Justine, Montreal, Quebec, Canada; and
| | - Maja Krajinovic
- Charles-Bruneau Cancer Center, CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
- Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada
- Clinical Pharmacology Unit, CHU Sainte-Justine, Montreal, Quebec, Canada; and
| | - Henrique Bittencourt
- Charles-Bruneau Cancer Center, CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
- Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada
- Clinical Pharmacology Unit, CHU Sainte-Justine, Montreal, Quebec, Canada; and
| | - Chakradhara Rao Satyanarayana Uppugunduri
- CANSEARCH Research Platform for Pediatric Oncology and Hematology, Department of Pediatrics, Gynecology, and Obstetrics, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Marc Ansari
- CANSEARCH Research Platform for Pediatric Oncology and Hematology, Department of Pediatrics, Gynecology, and Obstetrics, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Division of Pediatric Oncology and Hematology, Department of Women, Child, and Adolescent, University Hospital of Geneva, Geneva, Switzerland
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2
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Iemura T, Kondo T, Ueda A, Maeda T, Kitawaki T, Arai Y, Kanda J, Ikeda T, Imada K, Ishikawa T, Anzai N, Itoh M, Takeoka T, Akasaka T, Yago K, Yonezawa A, Arima N, Kitano T, Nohgawa M, Watanabe M, Moriguchi T, Yamashita K, Ueda Y, Matsumoto K, Takaori-Kondo A. Effects of combined test dose and therapeutic drug monitoring strategy in exposure-directed busulfan. Ann Hematol 2023; 102:2909-2922. [PMID: 37052663 DOI: 10.1007/s00277-023-05209-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 04/01/2023] [Indexed: 04/14/2023]
Abstract
Although exposure-directed busulfan (BU) dosing can improve allogeneic hematopoietic stem cell transplantation outcomes, there is still large variability in BU exposure with test dose alone due to changes in BU clearance caused by drug interactions. We conducted a single-arm phase II trial using the combined test dose and therapeutic drug monitoring strategy (PK-guided group) and compared the outcomes with an external historical cohort receiving a fixed-dose (fixed-dose group). The first eight and second eight doses were adjusted based on the area under the blood concentration-time curve (AUC) of the test and first doses, respectively, targeting a total AUC of 82.1 mg·h/L. All patients received either BU and cyclophosphamide conditioning (BU/CY) or fludarabine (FLU)-containing conditioning. The BU clearance at the first dose decreased more in patients receiving FLU than in those receiving BU/CY; however, BU clearance also declined over time in patients who received BU/CY. The simulated total AUC (sAUC) with test dose only was significantly higher in patients who received FLU than in those who received BU/CY, but sAUC with the combined strategy was comparable. The 100-day progression-free survival was 85.5% (95% confidence interval [CI]: 71.9-92.8%), and was not inferior to that in the fixed-dose group. For the FLU-containing regimens, the PK-guided group showed decreased relapse (0.0% vs. 26.9%, p = 0.03), and favorable overall survival (75.1% vs. 57.0%, p = 0.07) at 1 year. The combined strategy effectively controlled the BU exposure close to the target levels, potentially improving efficacy, especially in patients receiving the FLU-containing regimen. Clinical evaluation of efficacy of dose-modified intravenous busulfan in allogeneic hematopoietic stem cell transplantation for hematological malignancy (#UMIN000014077, June 15th, 2014).
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Affiliation(s)
- Tomoki Iemura
- Department of Hematology and Oncology, Kyoto University, 54, Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Tadakazu Kondo
- Department of Hematology and Oncology, Kyoto University, 54, Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
| | - Atsushi Ueda
- Department of Hematology, Kurashiki Central Hospital, Okayama, Japan
| | - Takeshi Maeda
- Department of Hematology, Kurashiki Central Hospital, Okayama, Japan
| | - Toshio Kitawaki
- Department of Hematology and Oncology, Kyoto University, 54, Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Yasuyuki Arai
- Department of Hematology and Oncology, Kyoto University, 54, Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Junya Kanda
- Department of Hematology and Oncology, Kyoto University, 54, Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Takashi Ikeda
- Division of Hematology and Stem Cell Transplantation, Shizuoka Cancer Center, Shizuoka, Japan
| | - Kazunori Imada
- Department of Hematology, Japanese Red Cross Osaka Hospital, Osaka, Japan
| | - Takayuki Ishikawa
- Department of Hematology, Kobe City Medical Center General Hospital, Hyogo, Japan
| | - Naoyuki Anzai
- Department of Hematology, Takatsuki Red Cross Hospital, Osaka, Japan
| | - Mitsuru Itoh
- Department of Hematology, Kyoto City Hospital, Kyoto, Japan
| | - Tomoharu Takeoka
- Department of Hematology, Japan Red Cross Otsu Hospital, Shiga, Japan
| | | | - Kazuhiro Yago
- Department of Hematology, Shizuoka General Hospital, Shizuoka, Japan
| | - Akihito Yonezawa
- Department of Hematology, Kokura Memorial Hospital, Fukuoka, Japan
| | | | | | - Masaharu Nohgawa
- Department of Hematology, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Mitsumasa Watanabe
- Department of Hematology, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan
| | | | - Kouhei Yamashita
- Department of Hematology and Oncology, Kyoto University, 54, Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Yasunori Ueda
- Department of Hematology, Kurashiki Central Hospital, Okayama, Japan
| | - Kana Matsumoto
- Department of Clinical Pharmaceutics, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyoto, Japan
| | - Akifumi Takaori-Kondo
- Department of Hematology and Oncology, Kyoto University, 54, Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
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Tamari R, Scordo M, Kunvarjee BM, Proli A, Lin A, Flynn J, Cho C, Devlin S, Klein E, Boulad F, Cancio MI, Curran KJ, Jakubowski AA, Kernan NA, Kung AL, O’Reilly RJ, Papadopoulos EB, Prockop S, Scaradavou A, Shaffer BC, Shah G, Spitzer B, Gyurkocza B, Giralt SA, Perales MA, Boelens JJ. Association between busulfan exposure and survival in patients undergoing a CD34+ selected stem cell transplantation. Blood Adv 2023; 7:5225-5233. [PMID: 37379285 PMCID: PMC10500467 DOI: 10.1182/bloodadvances.2023009708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 06/12/2023] [Accepted: 06/12/2023] [Indexed: 06/30/2023] Open
Abstract
Busulfan is an alkylating drug routinely used in conditioning regimens for allogeneic hematopoietic cell transplantation (allo-HCT). A myeloablative conditioning regimen, including busulfan, is commonly used in patients undergoing T-cell depletion (TCD) and allo-HCT, but data on optimal busulfan pharmacokinetic (PK) exposure in this setting are limited. Between 2012 and 2019, busulfan PK was performed to target an area under the curve exposure between 55 and 66 mg × h/L over 3 days using a noncompartmental analysis model. We retrospectively re-estimated busulfan exposure following the published population PK (popPK) model (2021) and correlated it with outcomes. To define optimal exposure, univariable models were performed with P splines, wherein hazard ratio (HR) plots were drawn, and thresholds were found graphically as the points at which the confidence interval crossed 1. Cox proportional hazard and competing risk models were used for analyses. 176 patients were included, with a median age of 59 years (range, 2-71). Using the popPK model, the median cumulative busulfan exposure was 63.4 mg × h/L (range, 46.3-90.7). The optimal threshold was at the upper limit of the lowest quartile (59.5 mg × h/L). 5-year overall survival (OS) with busulfan exposure ≥59.5 vs <59.5 mg × h/L was 67% (95% CI, 59-76) vs 40% (95% CI, 53-68), respectively (P = .02), and this association remained in a multivariate analyses (HR, 0.5; 95% CI, 0.29; 0.88; P = .02). In patients undergoing TCD allo-HCT, busulfan exposure is significantly associated with OS. The use of a published popPK model to optimize exposure may significantly improve the OS.
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Affiliation(s)
- Roni Tamari
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Michael Scordo
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Binni M. Kunvarjee
- Department of Pharmacy, Memorial Sloan Kettering Cancer Center, New York, NY
| | | | - Andrew Lin
- Department of Pharmacy, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Jessica Flynn
- Department of Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Christina Cho
- Stem Cell Transplantion and Cellular Therapy Program, John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ
| | - Sean Devlin
- Department of Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Elizabeth Klein
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Farid Boulad
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medicine, New York, NY
| | - Maria I. Cancio
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medicine, New York, NY
| | - Kevin J. Curran
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medicine, New York, NY
| | - Ann A. Jakubowski
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Nancy A. Kernan
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medicine, New York, NY
| | - Andrew L. Kung
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medicine, New York, NY
| | - Richard J. O’Reilly
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medicine, New York, NY
| | - Esperanza B. Papadopoulos
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Susan Prockop
- Department of Pediatrics, Boston Children’s Hospital and Dana Farber Cancer Institute, Boston, MA
| | - Andromachi Scaradavou
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medicine, New York, NY
| | - Brian C. Shaffer
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Gunjan Shah
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Barbara Spitzer
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medicine, New York, NY
| | - Boglarka Gyurkocza
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Sergio A. Giralt
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Miguel-Angel Perales
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
| | - Jaap Jan Boelens
- Department of Pediatrics, Stem Cell Transplantation and Cellular Therapies Service, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Pediatrics, Weill Cornell Medicine, New York, NY
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4
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Mori S, Guo M, Rivera-Robles N, Edgar CM, Mcvey CP, Yi F, Ahmad S, Patel RD, Varela JC. Evaluation of different pharmacokinetically guided IV busulfan exposure ranges on adult patient outcomes after hematopoietic stem cell transplantation. Ann Hematol 2023; 102:181-190. [PMID: 36462061 DOI: 10.1007/s00277-022-05042-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 11/08/2022] [Indexed: 12/04/2022]
Abstract
Conditioning intensity contributes significantly to outcomes in allogeneic hematopoietic stem cell transplantation (allo-HSCT). We evaluated two myeloablative conditioning dosing ranges of intravenous (IV) busulfan (Bu) in combination with fludarabine in 70 patients. In 2015, our practice changed to target busulfan area under the curve (AUC) of ≥ 19.7 mg*h/L. We assessed responses in patients receiving busulfan AUCs of < 19.7 mg*h/L (Low-Bu) and ≥ 19.7 mg*h/L (High-Bu). At 18-month median follow-up, no differences in overall survival (OS) and relapse-free survival (RFS) were found between Low-Bu and High-Bu groups (p = 0.35 and p = 0.29, respectively). Relapses occurred in 25.7% of patients. No differences in median time to relapse were noted. Minimal residual disease (MRD)-positive patients had a shorter median OS and RFS than MRD-negative patients. No differences were found in OS and RFS between Low-Bu and High-Bu groups in MRD-positive patients (p = 0.86 and p = 0.83, respectively), or MRD-negative patients (p = 0.56 and p = 0.38, respectively). Non-relapsed mortality (NRM) at 100 days was 3.4% vs. 4.1% in the Low-Bu vs. High-Bu groups. There were no significant differences in the incidence of acute-graft-versus-host disease (aGVHD) (71.4% vs. 63.4%) or chronic GVHD (cGVHD) (48.3% vs. 43.9%) between the groups. The cumulative incidence of grades III-IV aGVHD was 24.1% in Low-Bu group and 22.4% in High-Bu group. In conclusion, targeting a busulfan AUC of > 19.7 mg*h/L with fludarabine does not appear to add an advantage in OS and RFS.
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Affiliation(s)
- Shahram Mori
- Blood and Marrow Transplant Center, AdventHealth Cancer Institute, AdventHealth Cancer Institute/AHMG, 2415 N. Orange Ave., Suite 601, Orlando, FL, 32804, USA.
| | - Mengni Guo
- Department of Internal Medicine, AdventHealth, Orlando, USA
| | | | - Cory Mical Edgar
- Blood and Marrow Transplant Center, AdventHealth Cancer Institute, AdventHealth Cancer Institute/AHMG, 2415 N. Orange Ave., Suite 601, Orlando, FL, 32804, USA
| | - Courtney Paige Mcvey
- Blood and Marrow Transplant Center, AdventHealth Cancer Institute, AdventHealth Cancer Institute/AHMG, 2415 N. Orange Ave., Suite 601, Orlando, FL, 32804, USA
| | | | - Sarfraz Ahmad
- Gynecologic Oncology Program, AdventHealth Cancer Institute, Orlando, FL, 32804, USA
| | - Rushang D Patel
- Blood and Marrow Transplant Center, AdventHealth Cancer Institute, AdventHealth Cancer Institute/AHMG, 2415 N. Orange Ave., Suite 601, Orlando, FL, 32804, USA
| | - Juan Carlos Varela
- Blood and Marrow Transplant Center, AdventHealth Cancer Institute, AdventHealth Cancer Institute/AHMG, 2415 N. Orange Ave., Suite 601, Orlando, FL, 32804, USA
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5
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Seydoux C, Battegay R, Halter J, Heim D, Rentsch KM, Passweg JR, Medinger M. Impact of busulfan pharmacokinetics on outcome in adult patients receiving an allogeneic hematopoietic cell transplantation. Bone Marrow Transplant 2022; 57:903-910. [PMID: 35361896 PMCID: PMC9200635 DOI: 10.1038/s41409-022-01641-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 03/02/2022] [Accepted: 03/11/2022] [Indexed: 11/09/2022]
Abstract
Busulfan (Bu) is widely used in conditioning regimens before allogeneic hematopoietic cell transplantation, with variable metabolism due to interindividual differences of pharmacokinetics (PK). The purpose of this study was to correlate pharmacokinetics and clinical outcomes. Lower-AUC, in range-AUC and higher-AUC were defined as ±25% of the targeted Bu-AUC. In 2019, we changed Bu dosing from 4×/day (Bu-4) to 1×/day (Bu-1) for ease of application. AUC-target range was reached in 46% of patients; 40% were in low-AUC and 14% in high-AUC. Among all toxicities, viral and fungal infections were significantly more frequent in high-AUC compared with low-AUC (20% vs. 8%; p = 0.01 and 37% vs. 17%; p = 0.03). Bu-1 showed lower PK values (66% vs. 36% of Bu-4 in low-AUC; p < 0.01) and higher incidence of mucositis (p = 0.02). Long-term outcomes at 2 years showed a higher non-relapse mortality (NRM) (p < 0.01) and higher relative risk of death in the high-AUC group compared to the other groups. Cumulative incidence of relapse and acute/chronic GvHD were not significantly different. The optimal cut-off in Bu-AUC associated with low NRM was 969 µmol/l*min (ROC AUC 0.67, sensitivity 0.86 and specificity 0.47) for Bu-4. In conclusion, low-AUC BU-PK seems of benefit regarding NRM and survival.
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Affiliation(s)
- Claire Seydoux
- Division of Hematology, University Hospital of Basel, Basel, Switzerland.
| | - Raphael Battegay
- Division of Hematology, University Hospital of Basel, Basel, Switzerland
| | - Joerg Halter
- Division of Hematology, University Hospital of Basel, Basel, Switzerland
| | - Dominik Heim
- Division of Hematology, University Hospital of Basel, Basel, Switzerland
| | - Katharina M Rentsch
- Department of Laboratory Medicine, University Hospital of Basel, Basel, Switzerland
| | - Jakob R Passweg
- Division of Hematology, University Hospital of Basel, Basel, Switzerland
| | - Michael Medinger
- Division of Hematology, University Hospital of Basel, Basel, Switzerland.
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6
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Hepatic veno-occlusive disease (sinusoidal obstruction syndrome) after hematopoietic stem cell transplantation in adult patients: diagnosis, incidence, prophylaxis, and treatment. Transfus Apher Sci 2022; 61:103372. [DOI: 10.1016/j.transci.2022.103372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Ben Hassine K, Powys M, Svec P, Pozdechova M, Versluys B, Ansari M, Shaw PJ. Total Body Irradiation Forever? Optimising Chemotherapeutic Options for Irradiation-Free Conditioning for Paediatric Acute Lymphoblastic Leukaemia. Front Pediatr 2021; 9:775485. [PMID: 34956984 PMCID: PMC8705537 DOI: 10.3389/fped.2021.775485] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 10/21/2021] [Indexed: 12/15/2022] Open
Abstract
Total-body irradiation (TBI) based conditioning prior to allogeneic hematopoietic stem cell transplantation (HSCT) is generally regarded as the gold-standard for children >4 years of age with acute lymphoblastic leukaemia (ALL). Retrospective studies in the 1990's suggested better survival with irradiation, confirmed in a small randomised, prospective study in the early 2000's. Most recently, this was reconfirmed by the early results of the large, randomised, international, phase III FORUM study published in 2020. But we know survivors will suffer a multitude of long-term sequelae after TBI, including second malignancies, neurocognitive, endocrine and cardiometabolic effects. The drive to avoid TBI directs us to continue optimising irradiation-free, myeloablative conditioning. In chemotherapy-based conditioning, the dominant myeloablative effect is provided by the alkylating agents, most commonly busulfan or treosulfan. Busulfan with cyclophosphamide is a long-established alternative to TBI-based conditioning in ALL patients. Substituting fludarabine for cyclophosphamide reduces toxicity, but may not be as effective, prompting the addition of a third agent, such as thiotepa, melphalan, and now clofarabine. For busulfan, it's wide pharmacokinetic (PK) variability and narrow therapeutic window is well-known, with widespread use of therapeutic drug monitoring (TDM) to individualise dosing and control the cumulative busulfan exposure. The development of first-dose selection algorithms has helped achieve early, accurate busulfan levels within the targeted therapeutic window. In the future, predictive genetic variants, associated with differing busulfan exposures and toxicities, could be employed to further tailor individualised busulfan-based conditioning for ALL patients. Treosulfan-based conditioning leads to comparable outcomes to busulfan-based conditioning in paediatric ALL, without the need for TDM to date. Future PK evaluation and modelling may optimise therapy and improve outcome. More recently, the addition of clofarabine to busulfan/fludarabine has shown encouraging results when compared to TBI-based regimens. The combination shows activity in ALL as well as AML and deserves further evaluation. Like busulfan, optimization of chemotherapy conditioning may be enhanced by understanding not just the PK of clofarabine, fludarabine, treosulfan and other agents, but also the pharmacodynamics and pharmacogenetics, ideally in the context of a single disease such as ALL.
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Affiliation(s)
- Khalil Ben Hassine
- Cansearch Research Platform for Pediatric Oncology and Hematology, Department of Pediatrics, Gynecology and Obstetrics, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Madeleine Powys
- Blood Transplant and Cell Therapies, Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Peter Svec
- Department of Pediatric Hematology and Oncology, Comenius University, Bratislava, Slovakia.,Bone Marrow Transplantation Unit, National Institute of Children's Diseases, Bratislava, Slovakia
| | - Miroslava Pozdechova
- Department of Pediatric Hematology and Oncology, Comenius University, Bratislava, Slovakia.,Bone Marrow Transplantation Unit, National Institute of Children's Diseases, Bratislava, Slovakia
| | | | - Marc Ansari
- Cansearch Research Platform for Pediatric Oncology and Hematology, Department of Pediatrics, Gynecology and Obstetrics, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Division of Pediatric Oncology and Hematology, Department of Women, Child and Adolescent, University Geneva Hospitals, Geneva, Switzerland
| | - Peter J Shaw
- Blood Transplant and Cell Therapies, Children's Hospital at Westmead, Sydney, NSW, Australia.,Speciality of Child and Adolescent Health, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
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