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Liu CM, Lin FJ, Chhay C, Chen YC, Lin YK, Lu YY, Chan CS, Higa S, Chen SA, Chen YJ. Ibrutinib, a Bruton's tyrosine kinase inhibitor, regulates ventricular electromechanical activities and enhances arrhythmogenesis. Eur J Pharmacol 2024; 977:176675. [PMID: 38825303 DOI: 10.1016/j.ejphar.2024.176675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 05/12/2024] [Accepted: 05/27/2024] [Indexed: 06/04/2024]
Abstract
BACKGROUND Ibrutinib, a Bruton's tyrosine kinase inhibitor used in cancer therapy, exerts ventricular proarrhythmic effects; however, the underlying mechanisms remain unclear. Excitation-contraction coupling (E-C) disorders are pivotal for the genesis of ventricular arrhythmias (VAs), which arise mainly from the right ventricular outflow tract (RVOT). In this study, we aimed to comprehensively investigate whether ibrutinib regulates the electromechanical activities of the RVOT, leading to enhanced arrhythmogenesis, and explore the underlying mechanisms. METHODS We utilized conventional microelectrodes to synchronously record electrical and mechanical responses in rabbit RVOT tissue preparations before and after treatment with ibrutinib (10, 50, and 100 nM) and investigated their electromechanical interactions and arrhythmogenesis during programmed electrical stimulation. The fluorometric ratio technique was used to measure intracellular calcium concentration in isolated RVOT myocytes. RESULTS Ibrutinib (10-100 nM) shortened the action potential duration. Ibrutinib at 100 nM significantly increased pacing-induced ventricular tachycardia (VT) (from 0% to 62.5%, n = 8, p = 0.025). Comparisons between pacing-induced VT and non-VT episodes demonstrated that VT episodes had a greater increase in contractility than that of non-VT episodes (402.1 ± 41.4% vs. 232.4 ± 29.2%, p = 0.003). The pretreatment of ranolazine (10 μM, a late sodium current blocker) prevented the occurrence of ibrutinib-induced VAs. Ibrutinib (100 nM) increased late sodium current, reduced intracellular calcium transients, and enhanced calcium leakage in RVOT myocytes. CONCLUSION Ibrutinib increased the risk of VAs in the RVOT due to dysregulated electromechanical responses, which can be attenuated by ranolazine or apamin.
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Affiliation(s)
- Chih-Min Liu
- Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Fong-Jhih Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Biomedical Engineering, National Defense Medical Center, Taipei, Taiwan
| | - Chheng Chhay
- Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Cardiovascular Department, Faculty of Medicine, University of Health Sciences, Phnom Penh, Cambodia
| | - Yao-Chang Chen
- Department of Biomedical Engineering, National Defense Medical Center, Taipei, Taiwan
| | - Yung-Kuo Lin
- Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yen-Yu Lu
- Division of Cardiology, Sijhih Cathay General Hospital, New Taipei City, Taiwan
| | - Chao-Shun Chan
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Satoshi Higa
- Cardiac Electrophysiology and Pacing Laboratory, Division of Cardiovascular Medicine, Makiminato Central Hospital, Okinawa, Japan
| | - Shih-Ann Chen
- Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan; National Chung Hsing University, Taichung, Taiwan
| | - Yi-Jen Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Cardiovascular Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
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Quartermaine C, Ghazi SM, Yasin A, Awan FT, Fradley M, Wiczer T, Kalathoor S, Ferdousi M, Krishan S, Habib A, Shaaban A, Kola-Kehinde O, Kittai AS, Rogers KA, Grever M, Ruz P, Bhat S, Dickerson T, Byrd JC, Woyach J, Addison D. Cardiovascular Toxicities of BTK Inhibitors in Chronic Lymphocytic Leukemia: JACC: CardioOncology State-of-the-Art Review. JACC CardioOncol 2023; 5:570-590. [PMID: 37969643 PMCID: PMC10635896 DOI: 10.1016/j.jaccao.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 11/17/2023] Open
Abstract
Over the past decade, the treatment landscape of chronic lymphocytic leukemia (CLL) has dramatically changed, shifting from cytotoxic chemotherapy to targeted therapies. Bruton's tyrosine kinase (BTK) inhibitors have revolutionized the treatment of CLL and are increasingly applied in many other malignancies. However, ibrutinib, the first BTK inhibitor approved, is associated with serious toxicities, including atrial fibrillation in up to 38% of patients, ventricular arrhythmias, and other cardiovascular toxicities. Emerging data suggest several newer BTK inhibitors (eg, acalabrutinib, zanubrutinib) are still associated with cardiotoxic risks. This review examines the current state of evidence, including incidence rates, risk factors, mechanisms, and management strategies of cardiovascular toxicities with BTK inhibitors and other CLL therapies. We specifically focus on atrial fibrillation, ventricular arrhythmias/sudden death, hypertension, heart failure, bleeding, and stroke. We also touch on other emerging BTK therapies (eg, pirtobrutinib). Finally, we highlight key unanswered questions and future directions of research.
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Affiliation(s)
- Cooper Quartermaine
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, Ohio, USA
| | - Sanam M Ghazi
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, Ohio, USA
| | - Aneeq Yasin
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, Ohio, USA
| | - Farrukh T Awan
- Division of Hematology, UT-Southwestern Medical Center, Dallas, Texas, USA
| | - Michael Fradley
- Cardio-Oncology Program, Division of Cardiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Tracy Wiczer
- Department of Pharmacy, James Cancer Hospital and Solove Research Institute, Columbus, Ohio, USA
| | - Sujay Kalathoor
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, Ohio, USA
| | - Mussammat Ferdousi
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, Ohio, USA
| | - Satyam Krishan
- Department of Medicine, University of Oklahoma Medical Center, Oklahoma City, Oklahoma, USA
| | - Alma Habib
- Division of Hematology, The Ohio State University, Columbus, Ohio, USA
| | - Adnan Shaaban
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, Ohio, USA
| | - Onaopepo Kola-Kehinde
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, Ohio, USA
| | - Adam S Kittai
- Division of Hematology, The Ohio State University, Columbus, Ohio, USA
| | - Kerry A Rogers
- Division of Hematology, The Ohio State University, Columbus, Ohio, USA
| | - Michael Grever
- Division of Hematology, The Ohio State University, Columbus, Ohio, USA
| | - Patrick Ruz
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, Ohio, USA
| | - Seema Bhat
- Division of Hematology, The Ohio State University, Columbus, Ohio, USA
| | - Tyler Dickerson
- Department of Pharmacy, James Cancer Hospital and Solove Research Institute, Columbus, Ohio, USA
| | - John C Byrd
- Department of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Jennifer Woyach
- Division of Hematology, The Ohio State University, Columbus, Ohio, USA
| | - Daniel Addison
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, Ohio, USA
- Division of Cancer Prevention and Control, The Ohio State University, Columbus, Ohio, USA
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Dong R, Yan Y, Zeng X, Lin N, Tan B. Ibrutinib-Associated Cardiotoxicity: From the Pharmaceutical to the Clinical. Drug Des Devel Ther 2022; 16:3225-3239. [PMID: 36164415 PMCID: PMC9508996 DOI: 10.2147/dddt.s377697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/06/2022] [Indexed: 12/06/2022] Open
Abstract
Ibrutinib is the first-in-class Bruton tyrosine kinase (BTK) inhibitor that has revolutionized the treatment of B cell malignancies. Unfortunately, increased incidences of cardiotoxicity have limited its use. Despite over a decade of research, the biological mechanisms underlying ibrutinib cardiotoxicity remain unclear. In this review, we discuss the pharmacological properties of ibrutinib, the incidence and mechanisms of ibrutinib-induced cardiotoxicity, and practical management to prevent and treat this condition. We also synopsize and discuss the cardiovascular adverse effects related to other more selective BTK inhibitors, which may guide the selection of appropriate BTK inhibitors.
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Affiliation(s)
- Rong Dong
- Department of Clinical Pharmacy, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, People’s Republic of China
| | - Youyou Yan
- Translational Medicine Research Center, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31006, People’s Republic of China
| | - Xiaokang Zeng
- Department of Critical Care Medicine, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31006, People’s Republic of China
| | - Nengming Lin
- Department of Clinical Pharmacy, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, People’s Republic of China
- Translational Medicine Research Center, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31006, People’s Republic of China
- Nengming Lin, Department of Clinical Pharmacy, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Room 903, No. 7 Building, Hangzhou, People’s Republic of China, Tel/Fax +86-571-56005600, Email
| | - Biqin Tan
- Department of Clinical Pharmacy, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, People’s Republic of China
- Correspondence: Biqin Tan, Department of Clinical Pharmacy, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Room 207, No. 5 Building, Hangzhou, People’s Republic of China, Tel +86-571-56007824, Fax +86-571-56005600, Email
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Cubeddu LX, de la Rosa D, Ameruoso M. Antiviral and anti-inflammatory drugs to combat COVID-19: Effects on cardiac ion channels and risk of ventricular arrhythmias. BIOIMPACTS : BI 2022; 12:9-20. [PMID: 35087712 PMCID: PMC8783084 DOI: 10.34172/bi.2021.23630] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 10/11/2021] [Accepted: 10/14/2021] [Indexed: 12/27/2022]
Abstract
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Introduction: Drugs with no indication for the treatment of cardiovascular diseases (e.g., drugs employed to treat COVID-19) can increase the risk of arrhythmias. Of interest, a six-fold increase in the number of arrhythmic events was reported in patients with severe COVID-19. In this study, we reviewed (i) the pro-arrhythmic action of drugs given to patients with COVID-19 infection, and (ii) the effects of inflammatory cytokines on cardiac ion channels and possible generation of arrhythmias.
Methods: We conducted a literature search on the drugs with purported or demonstrated efficacy against COVID-19 disease, emphasizing the mechanisms by which anti-COVID-19 drugs and inflammatory cytokines interfere with cardiac ion channels.
Results:Antibiotics (azithromycin), antimalarials (hydroxychloroquine, chloroquine), antivirals (ritonavir/lopinavir, atazanavir), and some of the tyrosine kinase inhibitors (vandetanib) could induce long QT and increase risk for ventricular arrhythmias. The pro-arrhythmic action results from drug-induced inhibition of Kv11.1 (hERG) channels interfering with the repolarizing potassium IKr currents, leading to long QT and increased risk of triggered arrhythmias. At higher concentrations, these drugs may interfere with IKs, IK1, and/or Ito potassium currents, and even inhibit sodium (INa) and calcium (ICa) currents, inducing additional cardiac toxicity. Ibrutinib, an inhibitor of Bruton’s TK, increased the incidence of atrial fibrillation and ventricular tachycardia associated with a short QT interval. Inflammatory cytokines IL-6 and TNF-α inhibit IKr and Ito repolarizing potassium currents. High levels of inflammatory cytokines could contribute to the arrhythmic events. For remdesivir, favipiravir, dexamethasone, tocilizumab, anakinra, baricitinib, and monoclonal antibodies (bamlanivimab, etesevimab, and casirivimab), no evidence supports significant effects on cardiac ion channels, changes in the QT interval, and increased risk for ventricular arrhythmias.
Conclusion: This study supports the concept of hERG channel promiscuity. Different drug classes given to COVID-19 patients might delay repolarization, and increase the risk of ventricular arrhythmias. The presence of comorbid pro-arrhythmic disease states, and elevated levels of pro-arrhythmic cytokines, could increase the risk of ventricular arrhythmias. Discontinuation of nonessential drugs and correction of electrolyte abnormalities could prevent severe ventricular arrhythmias. Altogether, the most effective therapies against COVID-19 (remdesivir, dexamethasone, monoclonal antibodies) lack pro-arrhythmic activity.
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Affiliation(s)
- Luigi X Cubeddu
- Nova SE University, Health Professions Division, 3200 S, University Drive, Davie, FL 33328, USA
| | - Daisy de la Rosa
- Nova SE University, Health Professions Division, 3200 S, University Drive, Davie, FL 33328, USA
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Cheng M, Yang F, Liu J, Yang D, Zhang S, Yu Y, Jiang S, Dong M. Tyrosine Kinase Inhibitors-Induced Arrhythmias: From Molecular Mechanisms, Pharmacokinetics to Therapeutic Strategies. Front Cardiovasc Med 2021; 8:758010. [PMID: 34869670 PMCID: PMC8639698 DOI: 10.3389/fcvm.2021.758010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/25/2021] [Indexed: 12/27/2022] Open
Abstract
With the development of anti-tumor drugs, tyrosine kinase inhibitors (TKIs) are an indispensable part of targeted therapy. They can be superior to traditional chemotherapeutic drugs in selectivity, safety, and efficacy. However, they have been found to be associated with serious adverse effects in use, such as myocardial infarction, fluid retention, hypertension, and rash. Although TKIs induced arrhythmia with a lower incidence than other cardiovascular diseases, much clinical evidence indicated that adequate attention and management should be provided to patients. This review focuses on QT interval prolongation and atrial fibrillation (AF) which are conveniently monitored in clinical practice. We collected data about TKIs, and analyzed the molecule mechanism, discussed the actual clinical evidence and drug-drug interaction, and provided countermeasures to QT interval prolongation and AF. We also pooled data to show that both QT prolongation and AF are related to their multi-target effects. Furthermore, more than 30 TKIs were approved by the FDA, but most of the novel drugs had a small sample size in the preclinical trial and risk/benefit assessments were not perfect, which led to a suspension after listing, like nilotinib. Similarly, vandetanib exhibits the most significant QT prolongation and ibrutinib exhibits the highest incidence in AF, but does not receive enough attention during treatment.
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Affiliation(s)
- Mengfei Cheng
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
| | - Fang Yang
- The First Department of Respiratory Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Jiahui Liu
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
| | - Dan Yang
- Department of Clinical Laboratory, Harbin Medical University Cancer Hospital, Harbin, China
| | - Shuo Zhang
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yang Yu
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
| | - Shuai Jiang
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
| | - Mei Dong
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
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Tam CS, Ou YC, Trotman J, Opat S. Clinical pharmacology and PK/PD translation of the second-generation Bruton's tyrosine kinase inhibitor, zanubrutinib. Expert Rev Clin Pharmacol 2021; 14:1329-1344. [PMID: 34491123 DOI: 10.1080/17512433.2021.1978288] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Introduction: Bruton's tyrosine kinase (BTK) inhibitors have revolutionized the treatment of B-cell lymphomas. Zanubrutinib was designed to achieve improved therapeutic concentrations and minimize off-target activities putatively accounting, in part, for the adverse effects seen with other BTK inhibitors.Areas covered: This drug profile covers zanubrutinib clinical pharmacology and the translation of pharmacokinetics (PK) and pharmacodynamics (PD) to clinical efficacy and safety profiles, by highlighting key differences between zanubrutinib and other BTK inhibitors. We discuss PK, sustained BTK occupancy, and potential factors affecting PK of zanubrutinib, including food effects, hepatic impairment, and drug-drug interactions. These data, along with exposure-response analyses, were used to support the recommended dose of 320 mg, either once daily or as 160 mg twice daily. Translation of PK/PD attributes into clinical effects was demonstrated in a randomized, phase 3 head-to-head study comparing it with ibrutinib in patients with Waldenström macroglobulinemia.Expert opinion: Among the approved BTK inhibitors, zanubrutinib is less prone to PK modulation by intrinsic and extrinsic factors, leading to more consistent, sustained therapeutic exposures and improved dosing convenience. Zanubrutinib PK/PD has translated into durable responses and improved safety, representing an important new treatment option for patients who benefit from BTK therapy.
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Affiliation(s)
- Constantine S Tam
- Department of Haematology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Department of Haematology, St Vincent's Hospital, Fitzroy, VIC, Australia.,Department of Haematology, University of Melbourne, Parkville, VIC, Australia.,Department of Haematology, Royal Melbourne Hospital, Parkville, VIC, Australia
| | - Ying C Ou
- Sr. Director, Clinical Pharmacology, BeiGene USA Inc., San Mateo, CA, USA
| | - Judith Trotman
- Department of Haematology, Concord Repatriation Hospital, Concord, NSW, Australia.,Department of Haematology, The University of Sydney, Concord, NSW, Australia
| | - Stephen Opat
- Director, Clinical Haematology, Monash Health, Clayton, VIC, Australia.,Director, Clinical Haematology, Monash University, Clayton, VIC, Australia
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Bruton's tyrosine kinase Inhibitors and Cardiotoxicity: More Than Just Atrial Fibrillation. Curr Oncol Rep 2021; 23:113. [PMID: 34342738 PMCID: PMC8330192 DOI: 10.1007/s11912-021-01102-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2021] [Indexed: 12/12/2022]
Abstract
Purpose of Review The purpose of this review is to summarize the epidemiology, mechanisms, and management of cardiovascular complications of Bruton’s Tyrosine Kinase inhibitors (BTKIs). Recent Findings Ibrutinib increases the risk of atrial fibrillation, bleeding, and hypertension compared with non-BTKI therapies. The evidence to support an association between ibrutinib and other cardiovascular complications including ventricular tachyarrhythmias or cardiomyopathy is limited. Ibrutinib metabolism can be inhibited by some medications used to treat cardiovascular complications. The cardiovascular effects of more selective BTKIs, such as acalabrutinib, remain to be determined. Summary Future research should address the mechanisms underlying the cardiovascular complications of BTKIs and how best to manage them. The risks and benefits of more selective BTKIs as compared with ibrutinib require further evaluation.
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Fradley MG, Beckie TM, Brown SA, Cheng RK, Dent SF, Nohria A, Patton KK, Singh JP, Olshansky B. Recognition, Prevention, and Management of Arrhythmias and Autonomic Disorders in Cardio-Oncology: A Scientific Statement From the American Heart Association. Circulation 2021; 144:e41-e55. [PMID: 34134525 DOI: 10.1161/cir.0000000000000986] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
With the advent of novel cancer therapeutics and improved screening, more patients are surviving a cancer diagnosis or living longer with advanced disease. Many of these treatments have associated cardiovascular toxicities that can manifest in both an acute and a delayed fashion. Arrhythmias are an increasingly identified complication with unique management challenges in the cancer population. The purpose of this scientific statement is to summarize the current state of knowledge regarding arrhythmia identification and treatment in patients with cancer. Atrial tachyarrhythmias, particularly atrial fibrillation, are most common, but ventricular arrhythmias, including those related to treatment-induced QT prolongation, and bradyarrhythmias can also occur. Despite increased recognition, dedicated prospective studies evaluating true incidence are lacking. Moreover, few studies have addressed appropriate prevention and treatment strategies. As such, this scientific statement serves to mobilize the cardio-oncology, electrophysiology, and oncology communities to develop clinical and scientific collaborations that will improve the care of patients with cancer who have arrhythmias.
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Fradley MG, Welter-Frost A, Gliksman M, Emole J, Viganego F, Lee DH, Shah B, Chavez JC, Pinilla-Ibarz J, Schabath MB. Electrocardiographic Changes Associated With Ibrutinib Exposure. Cancer Control 2021; 27:1073274820931808. [PMID: 32496158 PMCID: PMC7273576 DOI: 10.1177/1073274820931808] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Although ibrutinib-associated atrial and ventricular arrhythmias have been well described, there is little information about ibrutinib's effects on other electrocardiographic parameters, particularly the QT interval. Using our database of 137 patients treated with ibrutinib, we retrospectively identified 21 patients in whom an electrocardiogram (ECG) was obtained both prior to and after ibrutinib exposure. All traditional ECG parameters as well as QT dispersion were manually measured by an electrophysiologist. Compared to baseline ECGs, post ibrutinib ECGs demonstrated QT interval shortening from 386 ms to 356 ms (P = .007), corrected QT interval shortening using Bazett's formula from 446 ms to 437 ms (P = .04), and corrected QT interval shortening using Fridericia's formula from 425 ms to 407 ms (P = .003). QT dispersion also increased post ibrutinib exposure compared to baseline (39.8 ms vs 57.3 ms, P = .002). There was no significant change in other ECG parameters. In conclusion, both the absolute and corrected QT intervals significantly shortened after ibrutinib exposure, while there was a significant increase in QT dispersion. These findings may point to a common underlying electrophysiologic mechanism of ibrutinib-associated arrhythmias.
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Affiliation(s)
- Michael G Fradley
- Cardio-Oncology Program, Division of Cardiovascular Medicine, H. Lee Moffitt Cancer Center and Research Institute, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Allan Welter-Frost
- Cardio-Oncology Program, Division of Cardiovascular Medicine, H. Lee Moffitt Cancer Center and Research Institute, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Matthew Gliksman
- Cardio-Oncology Program, Division of Cardiovascular Medicine, H. Lee Moffitt Cancer Center and Research Institute, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Josephine Emole
- Department of Medical Oncology, Henry Ford Health System, Detroit MI, USA
| | - Federico Viganego
- Cardio-Oncology Program, Division of Cardiovascular Medicine, H. Lee Moffitt Cancer Center and Research Institute, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Dae Hyun Lee
- Cardio-Oncology Program, Division of Cardiovascular Medicine, H. Lee Moffitt Cancer Center and Research Institute, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Bijal Shah
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Julio C Chavez
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Javier Pinilla-Ibarz
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Matthew B Schabath
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
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Salem JE, Manouchehri A, Bretagne M, Lebrun-Vignes B, Groarke JD, Johnson DB, Yang T, Reddy NM, Funck-Brentano C, Brown JR, Roden DM, Moslehi JJ. Cardiovascular Toxicities Associated With Ibrutinib. J Am Coll Cardiol 2020; 74:1667-1678. [PMID: 31558250 DOI: 10.1016/j.jacc.2019.07.056] [Citation(s) in RCA: 168] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/05/2019] [Accepted: 07/07/2019] [Indexed: 12/23/2022]
Abstract
BACKGROUND Ibrutinib has revolutionized treatment for several B-cell malignancies. However, a recent clinical trial where ibrutinib was used in a front-line setting showed increased mortality during treatment compared with conventional chemotherapy. Cardiovascular toxicities were suspected as the culprit but not directly assessed in the study. OBJECTIVES The purpose of this study was to identify and characterize cardiovascular adverse drug reactions (CV-ADR) associated with ibrutinib. METHODS This study utilized VigiBase (International pharmacovigilance database) and performed a disproportionality analysis using reporting odds ratios (ROR) and information component (IC) to determine whether CV-ADR and CV-ADR deaths were associated with ibrutinib. IC compares observed and expected values to find associations between drugs and adverse drug reactions using disproportionate Bayesian-reporting; IC025 (lower end of the IC 95% credibility interval) >0 is significant. RESULTS This study identified 303 ibrutinib-associated cardiovascular deaths. Ibrutinib was associated with higher reporting of supraventricular arrhythmias (SVAs) (ROR: 23.1; 95% confidence interval: 21.6 to 24.7; p < 0.0001; IC025: 3.97), central nervous system (CNS) hemorrhagic events (ROR: 3.7; 95% confidence interval: 3.4 to 4.1; p < 0.0001; IC025: 1.63), heart failure (ROR: 3.5; 95% confidence interval: 3.1 to 3.8; p < 0.0001; IC025: 1.46), ventricular arrhythmias (ROR: 4.7; 95% confidence interval: 3.7 to 5.9; p < 0.0001; IC025: 0.96), conduction disorders (ROR: 3.5; 95% confidence interval: 2.7 to 4.6; p < 0.0001; IC025: 0.76), CNS ischemic events (ROR: 2.2; 95% confidence interval: 2.0 to 2.5; p < 0.0001; IC025: 0.73), and hypertension (ROR: 1.7; 95% confidence interval: 1.5 to 1.9; p < 0.0001; IC025: 0.4). CV-ADR often occurred early after ibrutinib administration. Importantly, CV-ADR were associated with fatalities that ranged from ∼10% (SVAs and ventricular arrhythmias) to ∼20% (CNS events, heart failure, and conduction disorders). Ibrutinib-associated SVA portends poor prognosis when CNS events occur concomitantly, with 28.8% deaths (15 of 52 cases). CONCLUSIONS Severe and occasionally fatal cardiac events occur in patients exposed to ibrutinib. These events should be considered in patient care and in clinical trial designs. (Evaluation of Reporting of Cardio-vascular Adverse Events With Antineoplastic and Immunomodulating Agents [EROCA]; NCT03530215).
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Affiliation(s)
- Joe-Elie Salem
- Sorbonne Université, INSERM CIC-1421, AP-HP, Regional Pharmacovigilance Center, Pitié-Salpêtrière Hospital, UNICO-GRECO.6 Cardio-Oncology Program, Department of Pharmacology, Paris, France; Departments of Medicine and Pharmacology, Cardio-Oncology program, Vanderbilt University Medical Center, Nashville, Tennessee.
| | - Ali Manouchehri
- Departments of Medicine and Pharmacology, Cardio-Oncology program, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Marie Bretagne
- Sorbonne Université, INSERM CIC-1421, AP-HP, Regional Pharmacovigilance Center, Pitié-Salpêtrière Hospital, UNICO-GRECO.6 Cardio-Oncology Program, Department of Pharmacology, Paris, France
| | - Bénédicte Lebrun-Vignes
- Sorbonne Université, INSERM CIC-1421, AP-HP, Regional Pharmacovigilance Center, Pitié-Salpêtrière Hospital, UNICO-GRECO.6 Cardio-Oncology Program, Department of Pharmacology, Paris, France
| | - John D Groarke
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Douglas B Johnson
- Departments of Medicine and Pharmacology, Cardio-Oncology program, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Tao Yang
- Departments of Medicine and Pharmacology, Cardio-Oncology program, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Nishitha M Reddy
- Departments of Medicine and Pharmacology, Cardio-Oncology program, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Christian Funck-Brentano
- Sorbonne Université, INSERM CIC-1421, AP-HP, Regional Pharmacovigilance Center, Pitié-Salpêtrière Hospital, UNICO-GRECO.6 Cardio-Oncology Program, Department of Pharmacology, Paris, France
| | - Jennifer R Brown
- CLL Center, Dana-Farber Cancer Institute; Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - Dan M Roden
- Departments of Medicine and Pharmacology, Cardio-Oncology program, Vanderbilt University Medical Center, Nashville, Tennessee; Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Javid J Moslehi
- Departments of Medicine and Pharmacology, Cardio-Oncology program, Vanderbilt University Medical Center, Nashville, Tennessee.
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11
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Mu S, Darpo B, Tang Z, Novotny W, Tawashi M, Xue H, Willett M, Lin L, Sahasranaman S, Ou YC. No QTc Prolongation With Zanubrutinib: Results of Concentration-QTc Analysis From a Thorough QT Study in Healthy Subjects. Clin Transl Sci 2020; 13:923-931. [PMID: 32144955 PMCID: PMC7485941 DOI: 10.1111/cts.12779] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/09/2020] [Indexed: 12/28/2022] Open
Abstract
This thorough QT (TQT) study evaluated the effect of zanubrutinib on electrocardiogram (ECG) parameters by using concentration‐QTc (C‐QTc) analysis as the primary analysis for this study. Part A of the study determined the safety and tolerability of a single supratherapeutic dose of zanubrutinib (480 mg) in healthy volunteers. Part B was a randomized, blinded, placebo‐controlled and positive‐controlled, four‐way crossover, TQT study of single therapeutic (160 mg) and supratherapeutic (480 mg) doses of zanubrutinib, placebo, and open‐label moxifloxacin 400 mg. Thirty‐two participants received at least 1 dose of zanubrutinib, and 26 participants completed all 4 periods. Zanubrutinib did not have any effect on heart rate or cardiac conduction (pulse rate, QRS interval, or T‐wave morphology) and was generally well‐tolerated. Using C‐QTc analysis, the predicted placebo‐corrected change‐from‐baseline QT interval using Fridericia’s formula (ΔΔQTcF) was −3.4 msec (90% confidence interval: −4.9 to −1.9 msec) at peak concentrations of the 480 mg dose. A QT effect (ΔΔQTcF) exceeding 10 msec could be excluded within the observed concentration range at 160 and 480 mg doses. Assay sensitivity was established by moxifloxacin with 90% lower bound exceeding 5 msec. Implementing a C‐QTc analysis prospectively in this TQT study resulted in a substantially smaller sample size to maintain a similar study power as shown in the traditional time‐point analysis. A single 160‐mg or 480‐mg zanubrutinib dose did not prolong the QTc interval or have any other clinically relevant effects on ECG parameters.
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Affiliation(s)
- Song Mu
- BeiGene, Inc., San Mateo, California, USA
| | - Borje Darpo
- eResearchTechnology, Inc. (ERT), Philadelphia, Pennsylvania, USA
| | - Zhiyu Tang
- BeiGene, Inc., San Mateo, California, USA
| | | | | | - Hongqi Xue
- eResearchTechnology, Inc. (ERT), Philadelphia, Pennsylvania, USA
| | | | - Leo Lin
- BeiGene, Inc., San Mateo, California, USA
| | | | - Ying C Ou
- BeiGene, Inc., San Mateo, California, USA
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12
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Becker A, Martin EC, Mitchell DY, Grenningloh R, Bender AT, Laurent J, Mackenzie H, Johne A. Safety, Tolerability, Pharmacokinetics, Target Occupancy, and Concentration-QT Analysis of the Novel BTK Inhibitor Evobrutinib in Healthy Volunteers. Clin Transl Sci 2019; 13:325-336. [PMID: 31654487 PMCID: PMC7070898 DOI: 10.1111/cts.12713] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 09/18/2019] [Indexed: 01/07/2023] Open
Abstract
Bruton's tyrosine kinase (BTK) is a key regulator of B cell receptor and Fc receptor signaling, and a rational therapeutic target for autoimmune diseases. This first‐in‐human phase I, double‐blind, placebo‐controlled trial investigated the safety, tolerability, pharmacokinetics (PK), target occupancy, and effects on QT interval of evobrutinib, a highly selective, oral inhibitor of BTK, in healthy subjects. This dose escalation trial consisted of two parts. Part 1 included 48 subjects in 6 ascending dose cohorts (25, 50, 100, 200, 350, and 500 mg) randomized to a single dose of evobrutinib or placebo. Part 2 included 36 subjects in 3 ascending dose cohorts (25, 75, and 200 mg/day) randomized to evobrutinib or placebo once daily for 14 days. Safety and tolerability, as well as PK and target occupancy (total and free BTK in peripheral blood mononuclear cells), were assessed following single and multiple dosing. PK parameters were determined by noncompartmental methods. QT interval was obtained from 12‐lead electrocardiogram recordings and corrected for heart rate by Fridericia's method (QTcF). Treatment‐emergent adverse events (TEAEs) were mostly mild, occurring in 25% of subjects after single dosing, and 48.1% after multiple dosing. There was no apparent dose relationship regarding frequency or type of TEAE among evobrutinib‐treated subjects. Absorption was rapid (time to reach maximum plasma concentration (Tmax) ~ 0.5 hour), half‐life short (~ 2 hours), and PK dose‐proportional, with no accumulation or time dependency on repeat dosing. BTK occupancy was dose‐dependent, reaching maximum occupancy of > 90% within ~ 4 hours after single doses ≥ 200 mg; the effect was long‐lasting (> 50% occupancy at 96 hours with ≥ 100 mg). After multiple dosing, full BTK occupancy was achieved with 25 mg, indicating slow turnover of BTK protein in vivo. Concentration‐QTcF analyses did not show any impact of evobrutinib concentration on corrected QT (QTc). In summary, evobrutinib was well‐tolerated, showed linear and time‐independent PK, induced long‐lasting BTK inhibition, and was associated with no prolongation of QT/QTc interval in healthy subjects. Evobrutinib is, therefore, suitable for investigation in autoimmune diseases.
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Affiliation(s)
| | - Emily C Martin
- EMD Serono Research & Development Institute, Inc., Billerica, Massachusetts, USA
| | | | - Roland Grenningloh
- EMD Serono Research & Development Institute, Inc., Billerica, Massachusetts, USA
| | - Andrew T Bender
- EMD Serono Research & Development Institute, Inc., Billerica, Massachusetts, USA
| | | | - Harald Mackenzie
- EMD Serono Research & Development Institute, Inc., Billerica, Massachusetts, USA
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13
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Wu J, Zhu Z, Yu Q, Ding C. Tyrosine kinase inhibitors for the treatment of rheumatoid arthritis: phase I to Ⅱ clinical trials. Expert Opin Investig Drugs 2019; 28:1113-1123. [PMID: 31738612 DOI: 10.1080/13543784.2019.1692812] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Introduction: Rheumatoid arthritis (RA) is a chronic, refractory disorder caused by autoimmunity in the synovial joints. Disease-modifying anti-rheumatic drugs (DMARDs) and biologicals offer remission in only two-thirds of RA patients within 3 months, hence new therapeutic approaches are necessary. Tyrosine kinase inhibitors (TKIs) are newly developed small molecule drugs which have demonstrated encouraging results in this disease.Areas covered: The key findings from phase I and II clinical trials that have investigated the use of novel TKIs in the treatment of RA are discussed. We examined the literature published between January 2014 to January 2019 using electronic databases including PubMed, Web of Science, Medline, Embase, and Google Scholar. Additional information about phase I and II trials on the ClinicalTrial.gov website up to January 2019 was also retrieved.Expert opinion: JAK inhibitors are promising drugs with sound efficacy and acceptable safety and may be beneficial to patients who do not respond to DMARDs and biologicals. The response rates among RA patients to TKIs are diverse; genetic and environmental factors may be involved in the varying responses which are closely related to the pathogenesis of RA. Future studies may reveal the underlying mechanisms of resistance and non-response.
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Affiliation(s)
- Jing Wu
- Department of Rheumatology and Clinical Immunology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhaohua Zhu
- Clinical Research Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Qinghong Yu
- Department of Rheumatology and Clinical Immunology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Changhai Ding
- Department of Rheumatology and Clinical Immunology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China.,Clinical Research Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China.,Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
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14
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15
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Shafaattalab S, Lin E, Christidi E, Huang H, Nartiss Y, Garcia A, Lee J, Protze S, Keller G, Brunham L, Tibbits GF, Laksman Z. Ibrutinib Displays Atrial-Specific Toxicity in Human Stem Cell-Derived Cardiomyocytes. Stem Cell Reports 2019; 12:996-1006. [PMID: 31031187 PMCID: PMC6524928 DOI: 10.1016/j.stemcr.2019.03.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 01/08/2023] Open
Abstract
Ibrutinib (IB) is an oral Bruton's tyrosine kinase (BTK) inhibitor that has demonstrated benefit in B cell cancers, but is associated with a dramatic increase in atrial fibrillation (AF). We employed cell-specific differentiation protocols and optical mapping to investigate the effects of IB and other tyrosine kinase inhibitors (TKIs) on the voltage and calcium transients of atrial and ventricular human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs). IB demonstrated direct cell-specific effects on atrial hPSC-CMs that would be predicted to predispose to AF. Second-generation BTK inhibitors did not have the same effect. Furthermore, IB exposure was associated with differential chamber-specific regulation of a number of regulatory pathways including the receptor tyrosine kinase pathway, which may be implicated in the pathogenesis of AF. Our study is the first to demonstrate cell-type-specific toxicity in hPSC-derived atrial and ventricular cardiomyocytes, which reliably reproduces the clinical cardiotoxicity observed. hPSCs can be differentiated into atrial and ventricular cardiomyocytes (CMs) Drug effects can be measured using optical mapping of voltage and calcium transients Ibrutinib demonstrates cell-specific toxicity on atrial hPSC-CMs Ibrutinib exposure is associated with chamber-specific effects on regulatory pathways
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Affiliation(s)
- Sanam Shafaattalab
- Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1A6, Canada; British Columbia Children's Hospital Research Institute, 950 West 28th Avenue, Vancouver, BC V5Z 4H4, Canada
| | - Eric Lin
- Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1A6, Canada
| | - Effimia Christidi
- University of British Columbia, 170-6371 Crescent Road, Vancouver, BC V6T 1Z2, Canada
| | - Haojun Huang
- University of British Columbia, 170-6371 Crescent Road, Vancouver, BC V6T 1Z2, Canada
| | - Yulia Nartiss
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Analucia Garcia
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Jeehon Lee
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Stephanie Protze
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Gordon Keller
- McEwen Stem Cell Institute, University Health Network, Toronto, ON M5G 1L7, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Liam Brunham
- University of British Columbia, 170-6371 Crescent Road, Vancouver, BC V6T 1Z2, Canada
| | - Glen F Tibbits
- Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1A6, Canada; British Columbia Children's Hospital Research Institute, 950 West 28th Avenue, Vancouver, BC V5Z 4H4, Canada
| | - Zachary Laksman
- Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1A6, Canada; University of British Columbia, 170-6371 Crescent Road, Vancouver, BC V6T 1Z2, Canada.
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16
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Karakunnel JJ, Bui N, Palaniappan L, Schmidt KT, Mahaffey KW, Morrison B, Figg WD, Kummar S. Reviewing the role of healthy volunteer studies in drug development. J Transl Med 2018; 16:336. [PMID: 30509294 PMCID: PMC6278009 DOI: 10.1186/s12967-018-1710-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 11/27/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND With the exception of genotoxic oncology drugs, first-in-human, Phase 1 clinical studies of investigational drugs have traditionally been conducted in healthy volunteers (HVs). The primary goal of these studies is to investigate the pharmacokinetics and pharmacodynamics of a novel drug candidate, determine appropriate dosing, and document safety and tolerability. MAIN BODY When tailored to specific study objectives, HV studies are beneficial to manufacturers and patients alike and can be applied to both non-oncology and oncology drug development. Enrollment of HVs not only increases study accrual rates for dose-escalation studies but also alleviates the ethical concern of enrolling patients with disease in a short-term study at subtherapeutic doses when other studies (e.g. Phase 2 or Phase 3 studies) may be more appropriate for the patient. The use of HVs in non-oncology Phase 1 clinical trials is relatively safe but nonetheless poses ethical challenges because of the potential risks to which HVs are exposed. In general, most adverse events associated with non-oncology drugs are mild in severity, and serious adverse events are rare, but examples of severe toxicity have been reported. The use of HVs in the clinical development of oncology drugs is more limited but is nonetheless useful for evaluating clinical pharmacology and establishing an appropriate starting dose for studies in cancer patients. During the development of oncology drugs, clinical pharmacology studies in HVs have been used to assess pharmacokinetics, drug metabolism, food effects, potential drug-drug interactions, effects of hepatic and renal impairment, and other pharmacologic parameters vital for clinical decision-making in oncology. Studies in HVs are also being used to evaluate biosimilars versus established anticancer biologic agents. CONCLUSION A thorough assessment of toxicity and pharmacology throughout the drug development process is critical to ensure the safety of HVs. With the appropriate safeguards, HVs will continue to play an important role in future drug development.
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Affiliation(s)
| | - Nam Bui
- Stanford Cancer Institute, 875 Blake Wilbur Drive, Stanford, CA 94305 USA
| | - Latha Palaniappan
- Department of Medicine, Stanford University School of Medicine, 900 Blake Wilbur Drive, Room W200, 2nd Floor MC 5358, Stanford, CA 94304 USA
| | - Keith T. Schmidt
- Clinical Pharmacology Program, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892 USA
| | - Kenneth W. Mahaffey
- Stanford Center for Clinical Research (SCCR), Department of Medicine, Stanford University School of Medicine, 300 Pasteur Drive, Grant S-102, Stanford, CA 94305 USA
| | | | - William D. Figg
- Clinical Pharmacology Program, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892 USA
| | - Shivaani Kummar
- Stanford Cancer Institute, 875 Blake Wilbur Drive, Stanford, CA 94305 USA
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17
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Tam CS, Brown JR. Vigilance for ibrutinib-associated ventricular arrhythmias: rare but be aware. Leuk Lymphoma 2018; 59:2767-2768. [PMID: 30032684 DOI: 10.1080/10428194.2018.1482546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Constantine S Tam
- a Peter MacCallum Cancer Center, St Vincent's Hospital and University of Melbourne , Melbourne , Australia
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