1
|
Jezeršek Novaković B, Boltežar L, Novaković A. Current Opinion on Pixantrone in the Treatment of Non-Hodgkin B-Cell Lymphoma. Ther Clin Risk Manag 2021; 17:183-192. [PMID: 33688197 PMCID: PMC7936695 DOI: 10.2147/tcrm.s269324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/16/2021] [Indexed: 11/26/2022] Open
Abstract
Not many treatment options exist for patients with relapsed or refractory (R/R) B-cell non-Hodgkin lymphoma (NHL) in whom first- and second-line therapies were unsuccessful. This is especially true for patients with aggressive lymphomas. The innovative agent pixantrone has shown some promising results in terms of disease-free and overall survival, both in monotherapy as well as in combinations. However, recent trials (Phase III and real-world studies) reported unsatisfactory results, thereby raising the question about the role of pixantrone in the current treatment of R/R aggressive lymphomas. Nonetheless, there might still be a potential position for this drug in combinations, for use as first-line treatment of patients with cardiac dysfunction. This article summarizes the definition, structure, mechanism of action and reduced cardiotoxicity of pixantrone as well as efficacy and toxicity both in monotherapy and in combinations, as treatment for aggressive and indolent non-Hodgkin lymphomas.
Collapse
Affiliation(s)
| | - Lučka Boltežar
- Division of Medical Oncology, Institute of Oncology Ljubljana, Ljubljana, 1000, Slovenia
| | - Aleksander Novaković
- Division of Medical Oncology, Institute of Oncology Ljubljana, Ljubljana, 1000, Slovenia
| |
Collapse
|
2
|
Schwach V, Slaats RH, Passier R. Human Pluripotent Stem Cell-Derived Cardiomyocytes for Assessment of Anticancer Drug-Induced Cardiotoxicity. Front Cardiovasc Med 2020; 7:50. [PMID: 32322588 PMCID: PMC7156610 DOI: 10.3389/fcvm.2020.00050] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 03/16/2020] [Indexed: 12/26/2022] Open
Abstract
Cardiotoxicity is a major cause of high attrition rates among newly developed drugs. Moreover, anti-cancer treatment-induced cardiotoxicity is one of the leading reasons of mortality in cancer survivors. Cardiotoxicity screening in vitro may improve predictivity of cardiotoxicity by novel drugs, using human pluripotent stem cell (hPSC)-derived-cardiomyocytes. Anthracyclines, including Doxorubicin, are widely used and highly effective chemotherapeutic agents for the treatment of different forms of malignancies. Unfortunately, anthracyclines cause many cardiac complications early or late after therapy. Anthracyclines exhibit their potent anti-cancer effect primarily via induction of DNA damage during the DNA replication phase in proliferative cells. In contrast, studies in animals and hPSC-cardiomyocytes have revealed that cardiotoxic effects particularly arise from (1) the generation of oxidative stress inducing mitochondrial dysfunction, (2) disruption of calcium homeostasis, and (3) changes in transcriptome and proteome, triggering apoptotic cell death. To increase the therapeutic index of chemotherapeutic Doxorubicin therapy several protective strategies have been developed or are under development, such as (1) reducing toxicity through modification of Doxorubicin (analogs), (2) targeted delivery of anthracyclines specifically to the tumor tissue or (3) cardioprotective agents that can be used in combination with Doxorubicin. Despite continuous progress in the field of cardio-oncology, cardiotoxicity is still one of the major complications of anti-cancer therapy. In this review, we focus on current hPSC-cardiomyocyte models for assessing anthracycline-induced cardiotoxicity and strategies for cardioprotection. In addition, we discuss latest developments toward personalized advanced pre-clinical models that are more closely recapitulating the human heart, which are necessary to support in vitro screening platforms with higher predictivity. These advanced models have the potential to reduce the time from bench-to-bedside of novel antineoplastic drugs with reduced cardiotoxicity.
Collapse
Affiliation(s)
- Verena Schwach
- Applied Stem Cell Technologies, TechMed Centre, University of Twente, Enschede, Netherlands
| | - Rolf H Slaats
- Applied Stem Cell Technologies, TechMed Centre, University of Twente, Enschede, Netherlands
| | - Robert Passier
- Applied Stem Cell Technologies, TechMed Centre, University of Twente, Enschede, Netherlands.,Department of Anatomy and Embryology, Leiden University Medical Centre, Leiden, Netherlands
| |
Collapse
|
3
|
Willenbacher E, Jöhrer K, Willenbacher W, Flögel B, Greil R, Kircher B. Pixantrone demonstrates significant in vitro activity against multiple myeloma and plasma cell leukemia. Ann Hematol 2019; 98:2569-2578. [PMID: 31628518 PMCID: PMC6848044 DOI: 10.1007/s00277-019-03797-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 09/08/2019] [Indexed: 01/27/2023]
Abstract
Treatment results for multiple myeloma and plasma cell leukemia have considerably improved, but cure remains elusive and establishing new therapeutic approaches constitutes a major unmet clinical need. We analyzed the anti-myeloma properties of the aza-anthracenedione pixantrone which has been successfully used in a phase III study for the treatment of patients with aggressive non-Hodgkin's lymphoma as monotherapy as well as in combination regimes in vitro and in an adapted in vivo model (ex ovo chicken chorioallantoic membrane (CAM) assay). Pixantrone significantly inhibited proliferation and metabolic activity of all investigated myeloma cell lines. Importantly, anti-myeloma effects were more pronounced in tumor cell lines than in stromal cells, mesenchymal stem cells, and peripheral blood mononuclear cells of healthy controls. Apoptosis of myeloma cell lines was observed only after a 7-day incubation period, indicating a fast cytostatic and a slower cytotoxic effect of this drug. Pixantrone reduced the viability of primary plasma cells of patients and induced downregulation of myeloma-cell growth in the CAM assay. Additionally, we demonstrate in vitro synergism between pixantrone and the histone deacetylase inhibitor panobinostat with respect to its anti-proliferative features. From these data, we conclude that systematic investigations of the clinical usefulness of pixantrone in the framework of controlled clinical trials are clearly indicated (e.g., in penta-refractory patients).
Collapse
Affiliation(s)
- Ella Willenbacher
- Internal Medicine V (Hematology & Oncology), Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - Karin Jöhrer
- Tyrolean Cancer Research Institute, Innsbruck, Austria
| | - Wolfgang Willenbacher
- Internal Medicine V (Hematology & Oncology), Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria.,Oncotyrol, Center for Personalized Cancer Medicine, Innsbruck, Austria
| | - Brigitte Flögel
- Internal Medicine V (Hematology & Oncology), Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria.,Tyrolean Cancer Research Institute, Innsbruck, Austria
| | - Richard Greil
- Tyrolean Cancer Research Institute, Innsbruck, Austria.,Department of Internal Medicine III, Laboratory for Immunological and Molecular Cancer Research, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Brigitte Kircher
- Internal Medicine V (Hematology & Oncology), Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria. .,Tyrolean Cancer Research Institute, Innsbruck, Austria.
| |
Collapse
|
4
|
Barrenetxea Lekue C, Grasso Cicala S, Leppä S, Stauffer Larsen T, Herráez Rodríguez S, Alonso Caballero C, Jørgensen JM, Toldbod H, Leal Martínez I, D'Amore F. Pixantrone beyond monotherapy: a review. Ann Hematol 2019; 98:2025-2033. [PMID: 31312929 PMCID: PMC6700039 DOI: 10.1007/s00277-019-03749-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 06/20/2019] [Indexed: 01/12/2023]
Abstract
Outcomes for patients with non-Hodgkin's lymphoma (NHL) that proves refractory to treatment remain poor. Treatment of such patients is individualized and can include enrolment in a clinical trial of novel agents or use of one of a wide array of drug regimens. Initial treatment with anthracyclines such as doxorubicin limits options at later stages of treatment because of anthracycline-related cumulative cardiotoxicity. The aza-anthracenedione pixantrone was developed to reduce the likelihood of cardiotoxicity without compromising efficacy and is currently conditionally approved for use as monotherapy in patients with multiply-relapsed or refractory aggressive B cell NHL. The use of pixantrone in combination therapy, often to replace doxorubicin or mitoxantrone, has or is currently being investigated in numerous studies in patients with aggressive or indolent NHL and is the focus of this review. These include the R-CPOP regimen (rituximab, cyclophosphamide, pixantrone, vincristine, prednisone) for aggressive NHL in the first-line setting, including a study in elderly patients with limited cardiac function, and for patients with relapsed NHL with prior anthracycline exposure; the PSHAP regimen (pixantrone, cytarabine, prednisone, cisplatin), also in the latter setting; the PREBen/PEBen regimen (pixantrone, bendamustine and etoposide with or without rituximab) as salvage therapy; and pixantrone in combination with fludarabine, dexamethasone, and rituximab (FPD-R) for relapsed indolent NHL.
Collapse
Affiliation(s)
| | | | - Sirpa Leppä
- Department of Oncology, Helsinki University Hospital Comprehensive Cancer Centre and University of Helsinki, Helsinki, Finland
| | | | | | - Clara Alonso Caballero
- Hospital Universitario Basurto, Avenida de Montevideo, 18, 48013, Bilbao, Vizcaya, Spain
| | - Judit M Jørgensen
- Department of Hematology, Aarhus University Hospital, Aarhus, Denmark
| | - Helle Toldbod
- Department of Hematology, Aarhus University Hospital, Aarhus, Denmark
| | - Irene Leal Martínez
- Hospital Universitario Basurto, Avenida de Montevideo, 18, 48013, Bilbao, Vizcaya, Spain
| | - Francesco D'Amore
- Department of Hematology, Aarhus University Hospital, Aarhus, Denmark
| |
Collapse
|
5
|
Abstract
INTRODUCTION The overall prognosis for patients with relapsed or refractory aggressive non-Hodgkin's lymphomas is poor. Only a minority of patients are able to receive autologous stem cell transplantation. Patients not transplant-eligible or patients relapsing after transplantation have an urgent need for effective treatment options. Pixantrone is the only compound approved in Europe for this situation. Areas covered: This review describes the clinical development of pixantrone, starting with phase I trials up to phase III trials in order to define the role of pixantrone in treatment algorithms. The effectiveness of pixantrone is considered in relation to alternative therapeutic options. Furthermore, the similarities and differences between pixantrone and anthracyclines is highlighted, with a special focus on the mode of action and on cardiotoxicity. Expert opinion: Pixantrone is a valuable treatment option in relapsed and refractory aggressive lymphomas, with documented disease responses, manageable toxicities and clear distinctions to anthracyclines. Additional studies are needed to evaluate the role of pixantrone in combination with other compounds, especially with upcoming targeted therapies, and to confirm the effectiveness of pixantrone in other lymphoma subtypes, e.g. follicular lymphomas.
Collapse
Affiliation(s)
- Kai Hübel
- a Klinik I für Innere Medizin , University Hospital of Cologne , Cologne , Germany
| |
Collapse
|
6
|
Minotti G, Han H, Cattan V, Egorov A, Bertoni F. Pixantrone: novel mode of action and clinical readouts. Expert Rev Hematol 2018; 11:587-596. [DOI: 10.1080/17474086.2018.1476848] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Giorgio Minotti
- Department of Medicine and Unit for Drug Sciences, University Campus Bio-Medico, Rome, Italy
| | - Haiyong Han
- Molecular Medicine Division, Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Valérie Cattan
- R&D Oncology, Institut de Recherches Internationales Servier, Suresnes, France
| | - Anton Egorov
- R&D Oncology, Institut de Recherches Internationales Servier, Suresnes, France
| | - Francesco Bertoni
- Istituto Oncologico di Ricerca, Università della Svizzera italiana, Bellinzona, Switzerland
- Lymphoma Unit, IOSI Oncology Institute of Southern Switzerland, Bellinzona, Switzerland
| |
Collapse
|
7
|
Zinzani PL, Corradini P, Martelli M, Minotti G, Oliva S, Spina M, Barosi G, Tura S. Critical concepts, practice recommendations, and research perspectives of pixantrone therapy in non-Hodgkin lymphoma: a SIE, SIES, and GITMO consensus paper. Eur J Haematol 2016; 97:554-561. [PMID: 27124765 DOI: 10.1111/ejh.12768] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVES In this paper, we present a review of critical concepts and research perspectives and produce recommendations on the optimal use of pixantrone in non-Hodgkin lymphoma (NHL) by group discussion from an expert panel appointed by the Italian Society of Hematology and the affiliate societies, Società Italiana di Ematologia Sperimentale and Gruppo Italiano Trapianto di Midollo Osseo. METHODS Recommendations were produced using the Delphi process. Scientific evidence on pixantrone efficacy was analyzed using Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) methodology in the areas where at least one randomized trial was published. The following key issues were addressed for practical recommendations: pixantrone monotherapy in aggressive relapsed or refractory non-Hodgkin B-cell lymphomas and toxicity risk management in patients candidates to pixantrone. RESULTS AND CONCLUSIONS After a balanced and value-oriented discussion, the panel agreed that the benefit/risk profile was in favor of pixantrone in the treatment of adult patients with multiply relapsed or refractory aggressive NHL B-cell lymphomas. Pixantrone was deemed to be contraindicated in patients with uncontrolled cardiovascular disease. Despite a low rate of cardiotoxicity of pixantrone reported in clinical trials, the panel recommended that all patients receiving pixantrone should undergo periodical cardiac monitoring.
Collapse
Affiliation(s)
- Pier Luigi Zinzani
- Institute of Hematology "Seràgnoli", University of Bologna, Bologna, Italy
| | - Paolo Corradini
- Division of Hematology and Bone Marrow Transplantation, Fondazione IRCCS Istituto Nazionale dei Tumori, University of Milano, Milan, Italy
| | - Maurizio Martelli
- Dipartimento Biotecnologie Cellulari ed Ematologia, Universitá La Sapienza, Rome, Italy
| | - Giorgio Minotti
- Department of Medicine and Units of Drug Sciences and Clinical Pharmacology, University Campus Bio-Medico, Rome, Italy
| | - Stefano Oliva
- Cardiology Unit, National Cancer Institute IRCCS "Giovanni Paolo II", Bari, Italy
| | - Michele Spina
- Division of Medical Oncology A, National Cancer Institute, Aviano, Italy
| | - Giovanni Barosi
- Center of the Study of Myelofibrosis, Biotechnology Research Area, IRCCS Policlinico S. Matteo Foundation, Pavia, Italy
| | | |
Collapse
|
8
|
Something Old, New, Borrowed, Blue: Anthracenedione Agents for Treatment of Multiple Sclerosis. Clin Neuropharmacol 2016; 39:102-11. [PMID: 26966886 DOI: 10.1097/wnf.0000000000000137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This study aimed to present anthracenedione agents that have been used to treat multiple sclerosis (MS), problems related to their use, and knowledge gained from our experiences using these agents to develop more efficacious drugs with fewer adverse effects. METHODS We review preclinical and clinical data during the development mitoxantrone, an anthracycline, for the treatment of MS; benefits and potential risks; and strategies to reduce complications of anthracyclines. RESULTS Mitoxantrone had unacceptable and greater-than-anticipated toxicity for use in a chronic disease such as MS. Adverse effects included cardiotoxicity, treatment-associated leukemia, and amenorrhea. Toxicity was identified primarily in retrospect. Structurally related compounds include pixantrone (BBR2278) and BBR3378. Pixantrone is in clinical development in oncology. BBR3378 prevents the development of autoimmunity and experimental autoimmune encephalomyelitis and blocks experimental autoimmune encephalomyelitis even when given after the onset of autoimmunity. CONCLUSIONS There remains a need for effective MS treatment, particularly for nonrelapsing forms of MS. Mitoxantrone was the first nonbiologic drug approved by the Food and Drug Administration for use in MS. Chromophore modification of anthracenedione agents yielded a novel class of DNA binding agents (aza-anthracenediones such as pixantrone and aza-anthrapyrazoles such as BBR3378) with the potential for less cardiotoxicity compared with mitoxantrone. There is a need for long-term observation for delayed toxicity among humans enrolled in pixantrone trials. Preclinical toxicity studies for delayed toxicities in rodents and other models are warranted before consideration of derivatives of anthracenediones, aza-anthrazenediones, or aza-anthrapyrazoles for use in human MS clinical trials.
Collapse
|
9
|
Prospective clinical study of R-CMD therapy for indolent B cell lymphoma and mantle cell lymphoma from the Hokuriku Hematology Oncology Study Group. Med Oncol 2015; 32:232. [PMID: 26275804 PMCID: PMC4537487 DOI: 10.1007/s12032-015-0677-9] [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: 08/01/2015] [Accepted: 08/06/2015] [Indexed: 10/28/2022]
Abstract
Standardized treatments for indolent B cell lymphoma primarily consisting of follicular lymphoma (FL) and for mantle cell lymphoma (MCL) have yet to be established. Here the Hokuriku Hematology Oncology Study Group conducted a multicenter prospective study to investigate the efficacy and safety of a combination regimen of rituximab, cladribine, mitoxantrone, and dexamethasone (R-CMD) in indolent B cell lymphoma and MCL. A total of 33 CD20-positive patients who received care between January 2008 and August 2011 were investigated. These patients' illnesses were FL (n = 21), nodal marginal zone B cell lymphoma (NMZB, n = 3), MCL (n = 3), splenic marginal zone B cell lymphoma (n = 2), hairy cell leukemia (n = 1), Waldenstrom macroglobulinemia (WM, n = 1), and lymphoplasmacytic lymphoma (LPL, n = 2). Patients received four 21-day cycles of rituximab 375 mg/m(2) (day 1), cladribine 0.10 mg/kg (days 1-3), mitoxantrone 8 mg/m(2) (day 1), and dexamethasone 8 mg/body (days 1-3), with four additional rituximab doses at 4-week intervals. Of the 33 patients, 26 achieved complete response/unconfirmed complete response, and six achieved a partial response (4 with FL, 1 with NMZB, 1 with WM). One had progressive disease (FL), and four relapsed after remission (1 with FL, 2 with MCL, 1 with LPL). R-CMD therapy was relatively convenient and effective in indolent B cell lymphoma and MCL. Nonetheless, to suppress the number and function of both B cells and T cells, comprehensive infection prevention and follow-up are necessary in the future.
Collapse
|
10
|
|
11
|
Boyle EM, Morschhauser F. Pixantrone: a novel anthracycline-like drug for the treatment of non-Hodgkin lymphoma. Expert Opin Drug Saf 2015; 14:601-7. [DOI: 10.1517/14740338.2015.1010505] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
12
|
Boonstra PS, Shen J, Taylor JMG, Braun TM, Griffith KA, Daignault S, Kalemkerian GP, Lawrence TS, Schipper MJ. A statistical evaluation of dose expansion cohorts in phase I clinical trials. J Natl Cancer Inst 2015; 107:dju429. [PMID: 25710960 DOI: 10.1093/jnci/dju429] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Phase I trials often include a dose expansion cohort (DEC), in which additional patients are treated at the estimated maximum tolerated dose (MTD) after dose escalation, with the goal of ensuring that data are available from more than six patients at a single dose level. However, protocols do not always detail how, or even if, the additional toxicity data will be used to reanalyze the MTD or whether observed toxicity in the DEC will warrant changing the assigned dose. A DEC strategy has not been statistically justified. METHODS We conducted a simulation study of two phase I designs: the "3+3" and the Continual Reassessment Method (CRM). We quantified how many patients are assigned the true MTD using a 10 to 20 patient DEC and how a sensible reanalysis using the DEC changes the probability of selecting the true MTD. We compared these results with those from an equivalently sized larger CRM that does not include a DEC. RESULTS With either the 3+3 or CRM, reanalysis with the DEC increased the probability of identifying the true MTD. However, a large CRM without a DEC was more likely to identify the true MTD while still treating 10 or 15 patients at this dose level. CONCLUSIONS Where feasible, a CRM design with no explicit DEC is preferred to designs that fix a dose for all patients in a DEC.
Collapse
Affiliation(s)
- Philip S Boonstra
- Departments of Biostatistics (PSB, JS, JMGT, TMB, KAG, SD, MJS), Internal Medicine (GPK), Radiation Oncology (JMGT, TSL, MJS), University of Michigan.
| | - Jincheng Shen
- Departments of Biostatistics (PSB, JS, JMGT, TMB, KAG, SD, MJS), Internal Medicine (GPK), Radiation Oncology (JMGT, TSL, MJS), University of Michigan
| | - Jeremy M G Taylor
- Departments of Biostatistics (PSB, JS, JMGT, TMB, KAG, SD, MJS), Internal Medicine (GPK), Radiation Oncology (JMGT, TSL, MJS), University of Michigan
| | - Thomas M Braun
- Departments of Biostatistics (PSB, JS, JMGT, TMB, KAG, SD, MJS), Internal Medicine (GPK), Radiation Oncology (JMGT, TSL, MJS), University of Michigan
| | - Kent A Griffith
- Departments of Biostatistics (PSB, JS, JMGT, TMB, KAG, SD, MJS), Internal Medicine (GPK), Radiation Oncology (JMGT, TSL, MJS), University of Michigan
| | - Stephanie Daignault
- Departments of Biostatistics (PSB, JS, JMGT, TMB, KAG, SD, MJS), Internal Medicine (GPK), Radiation Oncology (JMGT, TSL, MJS), University of Michigan
| | - Gregory P Kalemkerian
- Departments of Biostatistics (PSB, JS, JMGT, TMB, KAG, SD, MJS), Internal Medicine (GPK), Radiation Oncology (JMGT, TSL, MJS), University of Michigan
| | - Theodore S Lawrence
- Departments of Biostatistics (PSB, JS, JMGT, TMB, KAG, SD, MJS), Internal Medicine (GPK), Radiation Oncology (JMGT, TSL, MJS), University of Michigan
| | - Matthew J Schipper
- Departments of Biostatistics (PSB, JS, JMGT, TMB, KAG, SD, MJS), Internal Medicine (GPK), Radiation Oncology (JMGT, TSL, MJS), University of Michigan
| |
Collapse
|
13
|
Iasonos A, O'Quigley J. Design considerations for dose-expansion cohorts in phase I trials. J Clin Oncol 2013; 31:4014-21. [PMID: 24101039 DOI: 10.1200/jco.2012.47.9949] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Phase I trials are increasingly including dose-expansion cohorts after the maximum-tolerated dose (MTD) has been reached to better characterize the toxicity profile or identify early signs of efficacy within a specific disease population. This article provides guidelines on how to monitor safety and re-evaluate the MTD using data obtained from expansion cohorts of phase I protocols. We illustrate how to implement a sequential monitoring rule for safety using a completed phase I trial that included an expansion cohort. We compare the accuracy of the revised MTD with the MTD obtained before expansion and with the true MTD based on simulated trials. The percent of trials that led to a change in the MTD, how far the revised MTD was from the true MTD, and the toxicity rates associated with each level are reported. When toxicity outcomes from the expansion cohort are taken into account, there is a 50% chance that a new, higher MTD will be recommended. Significant improvement in the accuracy of the MTD is obtained 30% of the time (ie, revised MTD is exactly the true MTD), and moderate improvement is obtained 80% of the time when the revised MTD is within a level from true MTD. Failure to include toxicity outcomes from additional patients treated during the expansion phase may result in a less accurate estimate of the MTD. This article provides investigators of phase I protocols with methodological tools to monitor safety and/or efficacy for patients accrued during the expansion phase and to update or confirm the established MTD.
Collapse
Affiliation(s)
- Alexia Iasonos
- Alexia Iasonos, Memorial Sloan-Kettering Cancer Center, New York, NY; and John O'Quigley, Université Paris VI, Paris, France
| | | |
Collapse
|
14
|
Papadatos-Pastos D, Pettengell R. Pixantrone: merging safety with efficacy. Expert Rev Hematol 2013; 6:25-33. [PMID: 23373776 DOI: 10.1586/ehm.12.61] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Pixantrone is a novel anthracycline derivative, manufactured by Cell Therapeutics Incorporated, WA, USA. It was developed with the aim to retain the efficacy of anthracyclines and be less cardiotoxic. Initial safety trials and single-arm, Phase II trials have shown preliminary evidence of anticancer activity and manageable toxicity. These results were validated in multicenter, randomized clinical trials where pixantrone was used as single agent or in combination with other cytotoxics. Following the results of PIX301, it is now approved by the EMA for use as monotherapy in pretreated patients with refractory non-Hodgkin lymphomas. Ongoing trials are assessing the use of pixantrone in combination with other drugs.
Collapse
|
15
|
Marolda R, Ruocco C, Cordiglieri C, Toscani C, Antozzi C, Mantegazza R, Baggi F. Differential targeting of immune-cells by Pixantrone in experimental myasthenia gravis. J Neuroimmunol 2013; 258:41-50. [DOI: 10.1016/j.jneuroim.2013.02.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 02/22/2013] [Accepted: 02/26/2013] [Indexed: 11/28/2022]
|
16
|
Clinical evidence for the role of pixantrone in the treatment of relapsed or refractory aggressive non-Hodgkin’s lymphoma. ACTA ACUST UNITED AC 2012. [DOI: 10.4155/cli.11.170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|