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Cool A, Nong T, Montoya S, Taylor J. BTK inhibitors: past, present, and future. Trends Pharmacol Sci 2024; 45:691-707. [PMID: 39025681 DOI: 10.1016/j.tips.2024.06.006] [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: 05/29/2024] [Revised: 06/24/2024] [Accepted: 06/24/2024] [Indexed: 07/20/2024]
Abstract
Bruton's tyrosine kinase (BTK) inhibitors have revolutionized the treatment landscape for B cell lymphomas such as chronic lymphocytic leukemia (CLL). The first-in-class BTK inhibitor ibrutinib has recently been succeeded by covalent BTK inhibitors that are safer but still face challenges of resistance mutations. The noncovalent BTK inhibitor pirtobrutinib was recently approved for relapsed and refractory CLL, and whether noncovalent BTK inhibitors will supplant covalent BTK inhibitors as upfront treatment options either alone or in combination will be determined. Meanwhile, newer BTK inhibitors and BTK degraders are vying for their place in the potential future landscape of B cell cancers as well as autoimmune diseases. This review will cover the latest progress in BTK inhibitor development and where the field is moving in light of these recent discoveries.
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Affiliation(s)
- Allison Cool
- Sylvester Comprehensive Cancer Center at the University of Miami Miller School of Medicine, Miami, FL, USA
| | - Tiffany Nong
- Sylvester Comprehensive Cancer Center at the University of Miami Miller School of Medicine, Miami, FL, USA
| | - Skye Montoya
- Sylvester Comprehensive Cancer Center at the University of Miami Miller School of Medicine, Miami, FL, USA
| | - Justin Taylor
- Sylvester Comprehensive Cancer Center at the University of Miami Miller School of Medicine, Miami, FL, USA.
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Du J, Chen ZY, Gu XR, Wang T, Huang ZF. Bruton tyrosine kinase inhibitor-related atrial fibrillation and its implications in the treatment of B-cell lymphoma. Front Cardiovasc Med 2024; 11:1408983. [PMID: 39131702 PMCID: PMC11310794 DOI: 10.3389/fcvm.2024.1408983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 07/12/2024] [Indexed: 08/13/2024] Open
Abstract
Adverse events of atrial fibrillation (AF) have been commonly reported in lymphoma patients in treating Bruton's tyrosine kinase inhibitors (BTKi). The incidence rate of AF can vary depending on the specific types of BTKi and the patient population. Totally 45 published studies have revealed that the overall incidence rate of AF is 5% (95% CI 4%-7%). By performing a subtype single-rate analysis, the second-generation BTKi shows a lower AF incidence rate and lower cardiovascular toxicity. In the subtype single-rate analysis, we conclude the different AF incidence rates of Ibrutinib (10%, 95% CI 7%-13%), Acalabrutinib (4%, 95% CI 1%-6%), Orelabrutinib (0%, 95% CI 0%-1%), and Zanubrutinib (0%, 95% CI 0%-1%). The comprehensive analysis of AF inspires us to better predict and manage AF and other cardiovascular events in treating lymphoma. Meticulous evaluation, collaboration between cardiologists and hematologists, and discovery of new biomarkers are essential for its management.
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Affiliation(s)
- Jun Du
- Department of Hematology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ze-Yu Chen
- Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Ran Gu
- Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ting Wang
- Department of Hematology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zou-Fang Huang
- Ganzhou Key Laboratory of Hematology, Department of Hematology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
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Xia J, Ahmed R. Rapidly progressive locked-in syndrome secondary to atypical herpes simplex virus-1 rhombencephalitis in an immunocompromised individual. IDCases 2024; 37:e02027. [PMID: 39045035 PMCID: PMC11263950 DOI: 10.1016/j.idcr.2024.e02027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/25/2024] Open
Abstract
HSV-1 encephalitis (HSE) is the most common cause of fatal sporadic encephalitis in the United States. HSE in adults is most commonly due to the reactivation of HSV in the central nervous system (CNS) which results in CNS necrosis leading to neurological compromise. The most common symptoms include altered mentation, fever, seizures, and focal neurological deficits. HSE most commonly involves damage to the temporal lobes however can rarely involve other CNS structures such as the brainstem and cerebellum. Immunocompromised status may increase the risk of atypical HSE. HSE involvement of the brainstem, particularly the pons, most commonly cause neuro-ocular and neuro-bulbar deficits. Rarely can HSV brainstem encephalitis cause quadriplegia or locked-in syndrome. We present a case of HSV-1 rhombencephalitis complicated by locked-in syndrome in a patient with CLL.
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Agudelo Higuita NI, Chastain DB, Scott B, Sahra S, Vargas Barahona L, Henao Cordero J, Lee ALH, Tuells J, Henao-Martínez AF. Risk of Invasive Fungal Infections in Patients With Chronic Lymphocytic Leukemia Treated With Bruton Tyrosine Kinase Inhibitors: A Case-Control Propensity Score-Matched Analysis. Open Forum Infect Dis 2024; 11:ofae115. [PMID: 38887474 PMCID: PMC11181183 DOI: 10.1093/ofid/ofae115] [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: 11/12/2023] [Accepted: 02/26/2024] [Indexed: 06/20/2024] Open
Abstract
Background Prior reports have suggested a possible increase in the frequency of invasive fungal infections (IFIs) with use of a Bruton tyrosine kinase inhibitor (BTKi) for treatment of chronic lymphoid malignancies such as chronic lymphocytic leukemia (CLL), but precise estimates are lacking. We aim to characterize the prevalence of IFIs among patients with CLL, for whom a BTKi is now the first-line recommended therapy. Methods We queried TriNetX, a global research network database, to identify adult patients with CLL using the International Classification of Diseases, Tenth Revision code (C91.1) and laboratory results. We performed a case-control propensity score-matched analysis to determine IFIs events by BTKi use. We adjusted for age, sex, ethnicity, and clinical risk factors associated with an increased risk of IFIs. Results Among 5358 matched patients with CLL, we found an incidence of 4.6% of IFIs in patients on a BTKi versus 3.5% among patients not on a BTKi at 5 years. Approximately 1% of patients with CLL developed an IFI while on a BTKi within this period. Our adjusted IFI event analysis found an elevated rate of Pneumocystis jirovecii pneumonia (PJP) (0.5% vs 0.3%, P = .02) and invasive candidiasis (3.5% vs 2.7%, P = .012) with the use of a BTKi. The number needed to harm for patients taking a BTKi was 120 and 358 for invasive candidiasis and PJP, respectively. Conclusions We found an adjusted elevated rate of PJP and invasive candidiasis with BTKi use. The rates are, however, low with a high number needed to harm. Additional studies stratifying other IFIs with specific BTKis are required to identify at-risk patients and preventive, cost-effective interventions.
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Affiliation(s)
- Nelson Iván Agudelo Higuita
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
- Instituto de Enfermedades Infecciosas y Parasitología Antonio Vidal, Tegucigalpa, Honduras
| | - Daniel B Chastain
- Department of Clinical and Administrative Pharmacy, University of Georgia College of Pharmacy, Albany, Georgia, USA
| | - Brian Scott
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Syeda Sahra
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | | | - José Henao Cordero
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Alfred L H Lee
- Department of Microbiology, Prince of Wales Hospital, Hong Kong Special Administration Region, China
| | - Jose Tuells
- Department of Community Nursing, Preventive Medicine and Public Health and History of Science, University of Alicante, San Vicente del Raspeig, Alicante, Spain
| | - Andrés F Henao-Martínez
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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Javidi-Sharifi N, Brown JR. Evaluating zanubrutinib for the treatment of adults with chronic lymphocytic leukemia or small lymphocytic lymphoma. Expert Rev Hematol 2024; 17:201-210. [PMID: 38784995 DOI: 10.1080/17474086.2024.2356257] [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: 10/19/2023] [Accepted: 05/13/2024] [Indexed: 05/25/2024]
Abstract
INTRODUCTION This review evaluates zanubrutinib as a treatment option for adults with chronic lymphocytic leukemia (CLL)/small lymphocytic lymphoma (SLL). Zanubrutinib, a covalent BTK (Bruton's tyrosine kinase) inhibitor, was recently approved by the US FDA based in part on head-to-head data demonstrating improved efficacy and safety compared to ibrutinib. AREAS COVERED The review discusses the efficacy, safety, and comparative advantages of zanubrutinib, highlighting its safety profile compared to other BTK inhibitors. It also addresses the unmet needs of current therapies in CLL/SLL and provides an overview of competitor compounds and ongoing research in BTK inhibition. EXPERT OPINION Zanubrutinib, the first BTK inhibitor to demonstrate superior efficacy and safety compared to another BTK inhibitor in CLL, is likely to be widely adopted due to its high-quality data and ease of use. Looking ahead, pirtobrutinib, a novel non-covalent BTK inhibitor, has shown promise in heavily pretreated CLL patients, including those unresponsive to covalent inhibitors, with ongoing phase 3 trials comparing it against ibrutinib. The field is also exploring time-limited therapies like the combination of ibrutinib and venetoclax, with ongoing trials evaluating different combinations to optimize efficacy and minimize toxicity, indicating a promising future for combination therapies in CLL treatment.
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Affiliation(s)
- Nathalie Javidi-Sharifi
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Jennifer R Brown
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
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Galitzia A, Maccaferri M, Mauro FR, Murru R, Marasca R. Chronic Lymphocytic Leukemia: Management of Adverse Events in the Era of Targeted Agents. Cancers (Basel) 2024; 16:1996. [PMID: 38893115 PMCID: PMC11171383 DOI: 10.3390/cancers16111996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 05/20/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
The treatment landscape for CLL has undergone a profound transformation with the advent of targeted agents (TAs) like Bruton's Tyrosine Kinase inhibitors (BTKis) and BCL-2 inhibitors (BCL-2is). These agents target crucial cellular pathways in CLL, offering superior efficacy over traditional chemo-immunotherapy, which has led to improved progression-free and overall survival rates. This advancement promises enhanced disease control and potentially normal life expectancy for many patients. However, the journey is not without challenges, as these TAs are associated with a range of adverse events (AEs) that can impact treatment efficacy and patient quality of life. This review focuses on detailing the various AEs related to TA management in CLL, evaluating their frequency and clinical impact. The aim is to present a comprehensive guide to the effective management of these AEs, ensuring optimal tolerability and efficacy of TAs. By reviewing the existing literature and consolidating findings, we provide insights into AE management, which is crucial for maximizing patient outcomes in CLL therapy.
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Affiliation(s)
- Andrea Galitzia
- Hematology and Stem Cell Transplantation Unit, Ospedale San Francesco, 08100 Nuoro, Italy;
| | - Monica Maccaferri
- Hematology Unit, Department of Oncology and Hematology, A.O.U of Modena, Policlinico, 41125 Modena, Italy; (M.M.); (R.M.)
| | - Francesca Romana Mauro
- Hematology, Department of Translational and Precision Medicine, Sapienza University, 00185 Rome, Italy;
| | - Roberta Murru
- Hematology and Stem Cell Transplantation Unit, Ospedale Oncologico A. Businco, ARNAS G. Brotzu, 09134 Cagliari, Italy
| | - Roberto Marasca
- Hematology Unit, Department of Oncology and Hematology, A.O.U of Modena, Policlinico, 41125 Modena, Italy; (M.M.); (R.M.)
- Department of Medical and Surgical Sciences, Section of Hematology, University of Modena and Reggio Emilia, 41121 Modena, Italy
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Blaize M, Thizy G, Boissonnas A, Portalier A, Lanternier F, de La Porte des Vaux C, Suarez F, Bougnoux ME, Guitard J, Jabet A, Stocker N, Aoudjhane A, Roos-Weil D, Fekkar A. Invasive Aspergillosis with impaired neutrophil responses against Aspergillus fumigatus in patients treated with Acalabrutinib-findings from three cases. Int J Infect Dis 2024; 142:107000. [PMID: 38461932 DOI: 10.1016/j.ijid.2024.107000] [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: 01/12/2024] [Revised: 02/19/2024] [Accepted: 03/04/2024] [Indexed: 03/12/2024] Open
Abstract
OBJECTIVES Ibrutinib, a first-generation covalent Bruton's tyrosine kinase inhibitor (BTKi) was found to be a risk factor for the occurrence of invasive fungal complications. Acalabrutinib is a second-generation covalent BTKi used to treat B-cell malignancies. Healthy donor neutrophils incubated ex vivo with acalabrutinib lose ability to control Aspergillus conidia germination. In patients receiving acalabrutinib, the potential effect on neutrophil antifungal activity is unknown. Furthermore, only two cases of invasive aspergillosis have been reported during treatment with acalabrutinib, outside of a few cases in a clinical trial. METHODS We describe three new cases of invasive aspergillosis occurring within the first months of acalabrutinib therapy in patients with chronic lymphocytic leukemia. We used videomicroscopy and flow cytometry approaches to investigate the basic functional responses against Aspergillus of neutrophils from acalabrutinib-treated patients. RESULTS We showed an alteration in the anti-Aspergillus response after 1 month of acalabrutinb therapy: neutrophils lost their capacities of killing Aspergillus fumigatus germinating conidia and decreased their reactive oxygen species production when stimulated by Aspergillus. CONCLUSIONS It is important to follow-up patients treated with acalabrutinib for the risk of aspergillosis as well as those treated with ibrutinib.
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Affiliation(s)
- Marion Blaize
- Sorbonne Université, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses (Cimi-Paris), Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Pitié, Salpêtrière, Service de Parasitologie-Mycologie, Paris, France.
| | - Guillaume Thizy
- Sorbonne Université, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses (Cimi-Paris), Paris, France
| | - Alexandre Boissonnas
- Sorbonne Université, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses (Cimi-Paris), Paris, France
| | - Anaïs Portalier
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Pitié, Salpêtrière, Service d'Hématologie Clinique, Paris, France
| | - Fanny Lanternier
- Université Paris Cité, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Necker-Enfants Malades, Service des Maladies Infectieuses et Tropicales, Paris, France
| | - Clémentine de La Porte des Vaux
- Université Paris Cité, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Necker-Enfants Malades, Service des Maladies Infectieuses et Tropicales, Paris, France
| | - Felipe Suarez
- Université Paris Cité, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Necker-Enfants Malades, Département d'Hématologie, Paris, France
| | - Marie-Elisabeth Bougnoux
- Université Paris Cité, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Necker-Enfants Malades, Service de Parasitologie-Mycologie, Paris, France
| | - Juliette Guitard
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Saint-Antoine, Service de Parasitologie-Mycologie, Paris, France
| | - Arnaud Jabet
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Saint-Antoine, Service de Parasitologie-Mycologie, Paris, France
| | - Nicolas Stocker
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Saint-Antoine, Service d'Hématologie Clinique, Paris, France
| | - Abdelmalek Aoudjhane
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Saint-Antoine, Service d'Hématologie Clinique, Paris, France
| | - Damien Roos-Weil
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Pitié, Salpêtrière, Service d'Hématologie Clinique, Paris, France
| | - Arnaud Fekkar
- Sorbonne Université, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses (Cimi-Paris), Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Pitié, Salpêtrière, Service de Parasitologie-Mycologie, Paris, France
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Lu J, Do B, Primeaux B. Evaluation of second-generation Bruton's tyrosine kinase inhibitors for the treatment of mantle cell lymphoma. J Oncol Pharm Pract 2024:10781552241232331. [PMID: 38356268 DOI: 10.1177/10781552241232331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
INTRODUCTION Second-generation Bruton's tyrosine kinase (BTK) inhibitors, acalabrutinib and zanubrutinib, are preferred agents for the treatment of relapsed and/or refractory mantle cell lymphoma (MCL) over first-generation BTK inhibitor, ibrutinib. The comparative safety and efficacy of these two agents have not been studied. Currently, the decision between using one second-generation BTK inhibitor over the other is largely dependent on provider preference, cost, organ dysfunction, presence of drug-drug interactions, adherence considerations, and theorized differences in safety outcomes due to the lack of head-to-head trials in MCL. METHODS This retrospective, observational study seeks to provide real-world data on the safety and efficacy of second-generation BTK inhibitors in the setting of relapsed and/or refractory MCL. RESULTS Thirty-eight patients treated with a second-generation BTK inhibitor were evaluated. Ten percent of patients experienced a select adverse drug event (ADE) in the acalabrutinib group that included hypertension and major hemorrhage with no patients experiencing a select ADE in the zanubrutinib group. CONCLUSIONS Results support historical data that acalabrutinib and zanubrutinib have a more favorable safety profile compared to ibrutinib in MCL.
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Affiliation(s)
- Jessie Lu
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Bryan Do
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Brian Primeaux
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Liu Y, Chu Y, Liu J, Ge X, Ding M, Li P, Liu F, Zhou X, Wang X. Incidence and mortality of second primary malignancies after lymphoma: a population-based analysis. Ann Med 2023; 55:2282652. [PMID: 38010751 PMCID: PMC10836242 DOI: 10.1080/07853890.2023.2282652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Second primary malignancies (SPMs) account for an increasing proportion of human malignancies. We estimated the incidence, risk factors and outcomes in lymphoma survivors with SPMs. METHODS Patients diagnosed with SPMs after primary lymphoma from 2010 to 2021 were included in this study. The incidence, mortality and clinical characteristics of SPMs in our center and Surveillance, Epidemiology, and End Results database were delineated and analyzed. Standardized incidence ratio quantified second cancer risk. RESULTS A total of 2912 patients of lymphoma were included, 63 cases of SPM met the inclusion criteria, with the prevalence of SPMs after lymphoma was 2.16%. The male-to-female ratio of 2.32:1. The majority of these patients were older (≥60 years old, 61.90%) and previously treated with chemotherapy (68.25%). The common types among SPMs were digestive system tumors (42.86%), respiratory system tumors (20.63%) and urinary system tumors (12.70%). Additionally, cancer risks were significantly elevated after specific lymphoma though calculating the expected incidence. In terms of mortality, the diagnosis of SPMs was significantly associated with an increased risk of death over time. Moreover, although the outcome was favorable in some SPM subtypes (thyroid and breast cancer), other SPMs such as stomach and lung tumors had a dismal prognosis. CONCLUSION With the improvement of medical standards, the survival of lymphoma patients has been prolonged. However, the incidence of SPM is increasing, particularly among men and older lymphoma survivors. Therefore, more attention should be invested in the SPM to further improve the prognosis of these patients.
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Affiliation(s)
- Yingyue Liu
- Department of Hematology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China
| | - Yurou Chu
- Department of Hematology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China
| | - Jiarui Liu
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xueling Ge
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Mei Ding
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Peipei Li
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Fang Liu
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Xiangxiang Zhou
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
- Branch of National Clinical Research Center for Hematologic Diseases, Jinan, Shandong, China
- National Clinical Research Center for Hematologic Diseases, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xin Wang
- Department of Hematology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
- Branch of National Clinical Research Center for Hematologic Diseases, Jinan, Shandong, China
- National Clinical Research Center for Hematologic Diseases, the First Affiliated Hospital of Soochow University, Suzhou, China
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Suresh RV, Dunnam C, Vaidya D, Wood RA, Bochner BS, MacGlashan DW, Dispenza MC. A phase II study of Bruton's tyrosine kinase inhibition for the prevention of anaphylaxis. J Clin Invest 2023; 133:e172335. [PMID: 37384412 PMCID: PMC10425211 DOI: 10.1172/jci172335] [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: 05/31/2023] [Accepted: 06/28/2023] [Indexed: 07/01/2023] Open
Abstract
BACKGROUNDIgE-mediated anaphylaxis is a potentially fatal systemic allergic reaction for which there are no currently FDA-approved preventative therapies. Bruton's tyrosine kinase (BTK) is an essential enzyme for IgE-mediated signaling pathways and is an ideal pharmacologic target to prevent allergic reactions. In this open-label trial, we evaluated the safety and efficacy of acalabrutinib, a BTK inhibitor that is FDA approved to treat some B cell malignancies, in preventing clinical reactivity to peanut in adults with peanut allergy.METHODSAfter undergoing graded oral peanut challenge to establish their baseline level of clinical reactivity, 10 patients had a 6-week rest period, then received 4 standard doses of 100 mg acalabrutinib twice daily and underwent repeat food challenge. The primary endpoint was the change in patients' threshold dose of peanut protein to elicit an objective clinical reaction.RESULTSAt baseline, patients tolerated a median of 29 mg of peanut protein before objective clinical reaction. During subsequent food challenge on acalabrutinib, patients' median tolerated dose significantly increased to 4,044 mg (range 444-4,044 mg). 7 patients tolerated the maximum protocol amount (4,044 mg) of peanut protein with no clinical reaction, and the other 3 patients' peanut tolerance increased between 32- and 217-fold. 3 patients experienced a total of 4 adverse events that were considered to be possibly related to acalabrutinib; all events were transient and nonserious.CONCLUSIONAcalabrutinib pretreatment achieved clinically relevant increases in patients' tolerance to their food allergen, thereby supporting the need for larger, placebo-controlled trials.TRIAL REGISTRATIONClinicalTrials.gov NCT05038904FUNDINGAstraZeneca Pharmaceuticals, the Johns Hopkins Institute for Clinical and Translational Research, the Ludwig Family Foundation, and NIH grants AI143965 and AI106043.
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Affiliation(s)
- Ragha V. Suresh
- Division of Allergy and Clinical Immunology, Department of Medicine
| | - Collin Dunnam
- Division of Allergy and Clinical Immunology, Department of Medicine
| | - Dhananjay Vaidya
- Division of General Internal Medicine, Department of Medicine, and
| | - Robert A. Wood
- Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Bruce S. Bochner
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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Kumar PS, Wiczer T, Rosen L, Pollauf AJ, Zheng A, Palettas M, Azali L, Bhat SA, Byrd JC, Grever MR, Rogers KA, Woyach JA, Kittai AS. Evaluation of bleeding events in patients receiving acalabrutinib therapy. Leukemia 2023; 37:1554-1557. [PMID: 36932166 DOI: 10.1038/s41375-023-01869-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/22/2023] [Accepted: 03/01/2023] [Indexed: 03/19/2023]
Affiliation(s)
- Pooja S Kumar
- The Ohio State University, Department of Pharmacy, Columbus, OH, USA
| | - Tracy Wiczer
- The Ohio State University, Department of Pharmacy, Columbus, OH, USA
| | - Lindsay Rosen
- The Ohio State University, Department of Pharmacy, Columbus, OH, USA
| | | | - Amy Zheng
- The Ohio State College of Pharmacy, Columbus, OH, USA
| | - Marilly Palettas
- The Ohio State University, Department of Biomedical Informatics, Center for Biostatistics, Columbus, OH, USA
| | - Leylah Azali
- Driscoll Children's Hospital, Corpus Christi, TX, USA
| | - Seema A Bhat
- The Ohio State University, Department of Internal Medicine, Division of Hematology, Columbus, OH, USA
| | - John C Byrd
- University of Cincinnati, Department of Internal Medicine, Cincinnati, OH, USA
| | - Michael R Grever
- The Ohio State University, Department of Internal Medicine, Division of Hematology, Columbus, OH, USA
| | - Kerry A Rogers
- The Ohio State University, Department of Internal Medicine, Division of Hematology, Columbus, OH, USA
| | - Jennifer A Woyach
- The Ohio State University, Department of Internal Medicine, Division of Hematology, Columbus, OH, USA
| | - Adam S Kittai
- The Ohio State University, Department of Internal Medicine, Division of Hematology, Columbus, OH, USA.
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12
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Criscuolo M, Fracchiolla N, Farina F, Verga L, Pagano L, Busca A. A review of prophylactic regimens to prevent invasive fungal infections in hematology patients undergoing chemotherapy or stem cell transplantation. Expert Rev Hematol 2023; 16:963-980. [PMID: 38044878 DOI: 10.1080/17474086.2023.2290639] [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: 09/07/2023] [Accepted: 11/29/2023] [Indexed: 12/05/2023]
Abstract
INTRODUCTION The recent introduction of targeted therapies, including monoclonal antibodies, tyrosine-kinase inhibitors, and immunotherapies has improved the cure rate of hematologic patients. The implication of personalized treatment on primary antifungal prophylaxis will be discussed. AREAS COVERED We reviewed the literature for clinical trials reporting the rate of invasive fungal infections during targeted and cellular therapies and stem cell transplant, and the most recent international guidelines for primary antifungal prophylaxis. EXPERT OPINION As the use of personalized therapies is growing, the risk of invasive fungal infection has emerged in various clinical settings. Therefore, it is possible that the use of mold-active antifungal prophylaxis would spread in the next years and the risk of breakthrough infections would increase. The introduction of new antifungal agents in the clinical armamentarium is expected to reduce clinical unmet needs concerning the management of primary antifungal prophylaxis and improve outcome of patients.
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Affiliation(s)
- Marianna Criscuolo
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - Nicola Fracchiolla
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milano, Milan, Italy
| | | | | | - Livio Pagano
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
- Sezione di Ematologia, Dipartimento di Scienze Radiologiche ed Ematologiche, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Alessandro Busca
- Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino, Department of Oncology, SSCVD Trapianto di Cellule Staminali Torino, Torino, Italy
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13
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Bye AP, Kriek N, Sage T, Rawlings SJ, Prodger C, Kesavan M, Lees C, Booth S, Cowen LG, Shefferd K, Desborough MJ, Gibbins JM, Eyre TA. Pirtobrutinib results in reversible platelet dysfunction compared to ibrutinib and acalabrutinib. Haematologica 2023; 108:1429-1435. [PMID: 36519322 PMCID: PMC10153540 DOI: 10.3324/haematol.2022.281402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Affiliation(s)
- Alexander P Bye
- Molecular and Clinical Sciences Research Institute, St George's University, Cranmer Terrace, London, United Kingdom; Institute for Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, RG6 6EX.
| | - Neline Kriek
- Institute for Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, RG6 6EX
| | - Tanya Sage
- Institute for Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, RG6 6EX
| | - Suzannah J Rawlings
- Institute for Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading,
| | - Catherine Prodger
- Department of Clinical Haematology, Cancer and Haematology Centre, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 7LE
| | - Murali Kesavan
- Department of Clinical Haematology, Cancer and Haematology Centre, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 7LE
| | - Charlotte Lees
- Department of Clinical Haematology, Cancer and Haematology Centre, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 7LE
| | - Stephen Booth
- Department of Clinical Haematology, Royal Berkshire Hospital NHS Foundation Trust, Reading, RG1 5AN
| | - Louise G Cowen
- Haematology Late Phase Clinical Trial Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 7LE
| | - Kirsty Shefferd
- Haematology Late Phase Clinical Trial Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 7LE
| | - Michael J Desborough
- Department of Clinical Haematology, Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 7LE
| | - Jonathan M Gibbins
- Institute for Cardiovascular and Metabolic Research, School of Biological Sciences, University of Reading, Reading, RG6 6EX
| | - Toby A Eyre
- Department of Clinical Haematology, Cancer and Haematology Centre, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford,
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14
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Suresh RV, Dunnam C, Vaidya D, Wood RA, Bochner BS, MacGlashan DW, Dispenza MC. Bruton's tyrosine kinase inhibition for the prevention of anaphylaxis: an open-label, phase 2 trial. RESEARCH SQUARE 2023:rs.3.rs-2757218. [PMID: 37066249 PMCID: PMC10104202 DOI: 10.21203/rs.3.rs-2757218/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
IgE-mediated anaphylaxis is a potentially fatal systemic allergic reaction for which there are no known preventative therapies. Bruton's tyrosine kinase (BTK) is an essential enzyme for IgE-mediated signaling pathways, and is an ideal pharmacologic target to prevent allergic reactions. In this open-label trial (NCT05038904), we evaluated the safety and efficacy of acalabrutinib, a BTK inhibitor that is FDA-approved to treat some B cell malignancies, in preventing clinical reactivity to peanut in adults with IgE-mediated peanut allergy. After undergoing a graded oral peanut challenge to establish their baseline level of clinical reactivity, all patients then received four standard doses of 100 mg acalabrutinib twice daily and underwent repeat food challenge. The primary endpoint was the change in patients' threshold dose of peanut protein to elicit an objective clinical reaction. At baseline, patients tolerated a median of 29 mg of peanut protein before objective clinical reaction. During subsequent food challenge on acalabrutinib, patients' median tolerated dose significantly increased to 4,044 mg (range, 444 - 4,044 mg). 7 of 10 patients tolerated the maximum protocol amount (4,044 mg) of peanut protein with no objective clinical reaction, and the other 3 patients' peanut tolerance increased between 32- and 217-fold. Three patients experienced a total of 4 adverse events that were considered by the investigators to be possibly related to acalabrutinib; all events were transient and nonserious. These results demonstrate that acalabrutinib pretreatment can achieve clinically-relevant increases in patients' tolerance to their food allergen, thereby supporting the need for larger, placebo-controlled trials.
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Affiliation(s)
- Ragha V Suresh
- Johns Hopkins University School of Medicine, Department of Medicine, Division of Allergy and Clinical Immunology, Baltimore, MD
| | - Collin Dunnam
- Johns Hopkins University School of Medicine, Department of Medicine, Division of Allergy and Clinical Immunology, Baltimore, MD
| | - Dhananjay Vaidya
- Johns Hopkins University School of Medicine, Department of Medicine, Division of General Internal Medicine, Baltimore, MD
| | - Robert A Wood
- Johns Hopkins University School of Medicine, Department of Pediatrics, Division of Allergy, Immunology, and Rheumatology, Baltimore, MD
| | - Bruce S Bochner
- Northwestern University Feinberg School of Medicine, Department of Medicine, Division of Allergy and Immunology, Chicago, IL
| | - Donald W MacGlashan
- Johns Hopkins University School of Medicine, Department of Medicine, Division of Allergy and Clinical Immunology, Baltimore, MD
| | - Melanie C Dispenza
- Johns Hopkins University School of Medicine, Department of Medicine, Division of Allergy and Clinical Immunology, Baltimore, MD
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15
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McGhie A, Lee J, Ferrajoli A, DiPippo AJ. Tolerability of acalabrutinib in patients with CLL: experience of a tertiary cancer care center. Leuk Lymphoma 2023:1-4. [PMID: 36891585 DOI: 10.1080/10428194.2023.2185089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Affiliation(s)
- Alicia McGhie
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jenessa Lee
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Alessandra Ferrajoli
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Adam J DiPippo
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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16
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D'Sa S, Matous JV, Advani R, Buske C, Castillo JJ, Gatt M, Kapoor P, Kersten MJ, Leblond V, Leiba M, Palomba ML, Paludo J, Qiu L, Sarosiek S, Shadman M, Talaulikar D, Tam CS, Tedeschi A, Thomas SK, Tohidi-Esfahani I, Trotman J, Varettoni M, Vos J, Garcia-Sanz R, San-Miguel J, Dimopoulos MA, Treon SP, Kastritis E. Report of consensus panel 2 from the 11th international workshop on Waldenström's macroglobulinemia on the management of relapsed or refractory WM patients. Semin Hematol 2023; 60:80-89. [PMID: 37147252 DOI: 10.1053/j.seminhematol.2023.03.003] [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: 03/09/2023] [Accepted: 03/09/2023] [Indexed: 03/29/2023]
Abstract
The consensus panel 2 (CP2) of the 11th International Workshop on Waldenström's macroglobulinemia (IWWM-11) has reviewed and incorporated current data to update the recommendations for treatment approaches in patients with relapsed or refractory WM (RRWM). The key recommendations from IWWM-11 CP2 include: (1) Chemoimmunotherapy (CIT) and/or a covalent Bruton tyrosine kinase (cBTKi) strategies are important options; their use should reflect the prior upfront strategy and are subject to their availability. (2) In selecting treatment, biological age, co-morbidities and fitness are important; nature of relapse, disease phenotype and WM-related complications, patient preferences and hematopoietic reserve are also critical factors while the composition of the BM disease and mutational status (MYD88, CXCR4, TP53) should also be noted. (3) The trigger for initiating treatment in RRWM should utilize knowledge of patients' prior disease characteristics to avoid unnecessary delays. (4) Risk factors for cBTKi related toxicities (cardiovascular dysfunction, bleeding risk and concurrent medication) should be addressed when choosing cBTKi. Mutational status (MYD88, CXCR4) may influence the cBTKi efficacy, and the role of TP53 disruptions requires further study) in the event of cBTKi failure dose intensity could be up titrated subject to toxicities. Options after BTKi failure include CIT with a non-cross-reactive regimen to one previously used CIT, addition of anti-CD20 antibody to BTKi, switching to a newer cBTKi or non-covalent BTKi, proteasome inhibitors, BCL-2 inhibitors, and new anti-CD20 combinations are additional options. Clinical trial participation should be encouraged for all patients with RRWM.
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Affiliation(s)
- S D'Sa
- UCLH Centre for Waldenström Macroglobulinaemia and Related Conditions, University College London Hospitals NHS Foundation Trust, London, UK.
| | - J V Matous
- Colorado Blood Cancer Institute, Sarah Cannon Research Institute, Denver, CO
| | - R Advani
- Stanford University Medical Center, Stanford, CA
| | - C Buske
- University Hospital Ulm, Ulm, Germany
| | - J J Castillo
- Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - M Gatt
- Hadassah University Medical Center, Jerusalem, Israel
| | | | - M J Kersten
- Amsterdam UMC, University of Amsterdam, Department of Hematology, Cancer Center Amsterdam/LYMMCARE, Amsterdam, Netherlands
| | - V Leblond
- Groupe Hospitalier Pitié-Salpêtrière, Sorbonne University, Paris, France
| | - M Leiba
- Assuta Ashdod University Hospital; Faculty of Health Science, Ben-Gurion University of the Negev, Negev, Israel Memorial Sloan Kettering Cancer Center, New York, NY
| | - M L Palomba
- Memorial Sloan Kettering Cancer Center, New York NY US
| | | | - L Qiu
- National Clinical Medical Research Center for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - S Sarosiek
- Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | | | - D Talaulikar
- ANU College of Health and Medicine, Canberra, Australia
| | - C S Tam
- Alfred Health, Monash University, Melbourne, Australia
| | - A Tedeschi
- A. O. Ospedale Niguarda Ca' Granda, Milan, Italy
| | - S K Thomas
- University of Texas, MD Anderson Cancer Center, Houston TX USA
| | - I Tohidi-Esfahani
- Concord Repatriation General Hospital, University of Sydney, Sydney, Australia
| | - J Trotman
- Concord Repatriation General Hospital, University of Sydney, Sydney, Australia
| | - M Varettoni
- Division of Hematology, Fondazione iRCCS Policlinico, San Matteo, Italy
| | - Jmi Vos
- Amsterdam UMC, University of Amsterdam, Department of Hematology, Cancer Center Amsterdam/LYMMCARE, Amsterdam, Netherlands
| | - R Garcia-Sanz
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca, CIBERONC and Center for Cancer Research-IBMCC (University of Salamanca-CSIC), Salamanca, Spain
| | - J San-Miguel
- Clínica Universidad de Navarra, Centro de Investigación Médica Aplicada, Instituto de Investigación Sanitaria de Navarra, Centro de Investigación Biomédica en Red Cáncer, Pamplona, Spain
| | - M A Dimopoulos
- Department of Clinical Therapeutics, National and Kapodistrian University of Athens, Athens, Greece
| | - S P Treon
- Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - E Kastritis
- Department of Clinical Therapeutics, National and Kapodistrian University of Athens, Athens, Greece
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17
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Shadman M, Flinn IW, Levy MY, Porter RF, Burke JM, Zafar SF, Misleh J, Kingsley EC, Yimer HA, Freeman B, Rao SS, Chaudhry A, Tumula PK, Gandhi MD, Manda S, Chen DY, By K, Xu L, Liu Y, Crescenzo R, Idoine A, Zhang X, Cohen A, Huang J, Sharman JP. Zanubrutinib in patients with previously treated B-cell malignancies intolerant of previous Bruton tyrosine kinase inhibitors in the USA: a phase 2, open-label, single-arm study. Lancet Haematol 2023; 10:e35-e45. [PMID: 36400069 DOI: 10.1016/s2352-3026(22)00320-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 09/09/2022] [Accepted: 09/15/2022] [Indexed: 11/17/2022]
Abstract
BACKGROUND We hypothesised that zanubrutinib, a highly selective next-generation Bruton tyrosine kinase (BTK) inhibitor, would be a safe and active treatment for patients intolerant of ibrutinib, acalabrutinib, or both. We aimed to assess whether zanubrutinib would prolong treatment duration by minimising treatment-related toxicities and discontinuations in patients with previously treated B-cell malignancies. METHODS This ongoing, phase 2, multicentre, open-label, single-arm study was done in 20 centres in the USA. Patients aged 18 or older with previously treated B-cell malignancies (chronic lymphocytic leukaemia, small lymphocytic lymphoma, mantle cell lymphoma, Waldenström macroglobulinaemia, or marginal zone lymphoma) who became intolerant of ibrutinib, acalabrutinib, or both, were orally administered zanubrutinib 160 mg twice daily or 320 mg once daily per investigator. The primary endpoint was recurrence and change in severity of ibrutinib or acalabrutinib intolerance events based on investigator-assessed adverse events. Secondary endpoints were investigator-assessed overall response rate; duration of response; disease control rate; and progression-free survival. Analyses included all patients who received any dose of the study drug. This study is registered with ClinicalTrials.gov, NCT04116437. FINDINGS Between Oct 14, 2019, and Sept 8, 2021, 67 patients (36 [54%] men and 31 [46%] women) who were intolerant of ibrutinib (n=57; cohort 1) or of acalabrutinib or acalabrutinib and ibrutinib (n=10; cohort 2) were enrolled. 63 (94%) patients were White, one (2%) had multiple ethnicities, and three (5%) had unreported or unknown ethnicity. Most intolerance events (81 [70%] of 115 for ibrutinib; 15 [83%] of 18 for acalabrutinib) did not recur with zanubrutinib. Of the recurring events, seven (21%) of 34 ibrutinib intolerance events and two (67%) of three acalabrutinib intolerance events recurred at the same severity with zanubrutinib; 27 (79%) ibrutinib intolerance events and one (33%) acalabrutinib intolerance event recurred at a lower severity with zanubrutinib. No events recurred at higher severity. No grade 4 intolerance events recurred. 64 (96%) of 67 patients had one or more adverse events with zanubrutinib; the most common adverse events were contusion (in 15 [22%] of 67 patients), fatigue (14 [21%]), myalgia (ten [15%]), arthralgia (nine [13%]), and diarrhoea (nine [13%]). Atrial fibrillation occurred in three (4%) patients (all grade 2). Eight (12%) of 67 patients had serious adverse events (anaemia, atrial fibrillation, bronchitis, COVID-19, COVID-19 pneumonia, febrile neutropenia, salmonella gastroenteritis, transfusion reaction, trigeminal nerve disorder, and urinary tract infection). No treatment-related deaths occurred. The median follow-up time was 12·0 months (IQR 8·2-15·6). Among the 64 efficacy-evaluable patients, disease control rate was 93·8% (60; 95% CI 84·8-98·3) and overall response rate was 64·1% (41; 95% CI 51·1-75·7). The median duration of response was not reached; the 12-month event-free duration of response rate was 95·0% (95% CI 69·5-99·3). Similarly, median progression-free survival was not reached; 18-month progression-free survival was 83·8% (95% CI 62·6-93·6). INTERPRETATION Patients intolerant of previous BTK inhibitors have limited treatment options. These results suggest that zanubrutinib, a safe and viable treatment for patients with B-cell malignancies, might fill that unmet need for those who exhibit intolerance to ibrutinib or acalabrutinib. FUNDING BeiGene.
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Affiliation(s)
- Mazyar Shadman
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, WA, USA; Division of Medical Oncology, University of Washington, Seattle, WA, USA.
| | - Ian W Flinn
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN, USA
| | - Moshe Y Levy
- Texas Oncology-Baylor Charles A Sammons Cancer Center, Dallas, TX, USA
| | | | - John M Burke
- Rocky Mountain Cancer Centers, US Oncology Research, Aurora, CO, USA
| | - Syed F Zafar
- Florida Cancer Specialists & Research Institute, Fort Myers, FL, USA
| | - Jamal Misleh
- Medical Oncology Hematology Consultants, Newark, DE, USA
| | | | - Habte A Yimer
- Texas Oncology-Tyler, US Oncology Research, Tyler, TX, USA
| | | | - Subramanya S Rao
- Affiliated Oncologists, Alpha Med Physicians Group, Tinley Park, IL, USA
| | | | | | | | - Sudhir Manda
- Arizona Oncology/US Oncology Research, Tucson, AZ, USA
| | | | | | | | - Ye Liu
- BeiGene USA, San Mateo, CA, USA; BeiGene Beijing, Beijing, China
| | | | | | | | | | | | - Jeff P Sharman
- Willamette Valley Cancer Institute and Research Center, US Oncology Research, Eugene, OR, USA
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18
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Alberti P, Salvalaggio A, Argyriou AA, Bruna J, Visentin A, Cavaletti G, Briani C. Neurological Complications of Conventional and Novel Anticancer Treatments. Cancers (Basel) 2022; 14:cancers14246088. [PMID: 36551575 PMCID: PMC9776739 DOI: 10.3390/cancers14246088] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/05/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
Various neurological complications, affecting both the central and peripheral nervous system, can frequently be experienced by cancer survivors after exposure to conventional chemotherapy, but also to modern immunotherapy. In this review, we provide an overview of the most well-known adverse events related to chemotherapy, with a focus on chemotherapy induced peripheral neurotoxicity, but we also address some emerging novel clinical entities related to cancer treatment, including chemotherapy-related cognitive impairment and immune-mediated adverse events. Unfortunately, efficacious curative or preventive treatment for all these neurological complications is still lacking. We provide a description of the possible mechanisms involved to drive future drug discovery in this field, both for symptomatic treatment and neuroprotection.
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Affiliation(s)
- Paola Alberti
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy
- NeuroMI (Milan Center for Neuroscience), 20126 Milan, Italy
| | | | - Andreas A. Argyriou
- Neurology Department, Agios Andreas State General Hospital of Patras, 26335 Patras, Greece
| | - Jordi Bruna
- Neuro-Oncology Unit, Hospital Universitari de Bellvitge-ICO Hospitalet, Bellvitge Institute for Biomedical Research (IDIBELL), 08908 Barcelona, Spain
| | - Andrea Visentin
- Hematology and Clinical Immunology Unit, Department of Medicine, University of Padova, 35131 Padova, Italy
| | - Guido Cavaletti
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy
| | - Chiara Briani
- Neurology Unit, Department of Neurosciences, University of Padova, 35131 Padova, Italy
- Correspondence:
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19
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Kuss B, Nagarajan C, Hsieh WS, Cheah CY. Practical management of chronic lymphocytic leukemia with acalabrutinib. Leuk Lymphoma 2022; 63:2785-2794. [PMID: 35852229 DOI: 10.1080/10428194.2022.2098289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Treatment of chronic lymphocytic leukemia (CLL) has been transformed in the past two decades. The introduction of targeted therapies has improved patient outcomes and the deliverability of effective therapies. Making the best use of the next wave of Bruton's tyrosine kinase (BTK) inhibitors requires an understanding of the nuances that separate the drugs in this class of agents. This paper reviews the newer BTK inhibitors and provides practical guidance on the management of CLL using acalabrutinib. Acalabrutinib is a safe and efficacious BTKi in the treatment of CLL. While some side effects appear to be an "on-target" effect of BTK inhibition, the selectivity of second-generation covalent BTK inhibitors such as acalabrutinib may result in a favorable safety profile due to less off-target kinase inhibition. Acalabrutinib represents a well-tolerated and effective alternative to ibrutinib in the management of CLL.
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Affiliation(s)
- Bryone Kuss
- Molecular Medicine and Genetics, Flinders University, Adelaide, SA, Australia.,Haematology Department, Flinders Medical Centre and SA Pathology, Adelaide, SA, Australia
| | - Chandramouli Nagarajan
- Department of Haematology, Singapore General Hospital, 1 Outram Rd, Block 3 Basement, Singapore 169608, Singapore.,SingHealth DUKE-NUS Blood Cancer Center and Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Wen Son Hsieh
- ICON Cancer Centre, 1 Farrer Park Station Rd, Singapore 217562, Singapore.,Division of Hematologic Malignancies, The Johns Hopkins Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland, USA
| | - Chan Yoon Cheah
- University of Western Australia Medical School, University of Western Australia, Perth, WA, Australia.,Haematology Department, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
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20
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Alu A, Lei H, Han X, Wei Y, Wei X. BTK inhibitors in the treatment of hematological malignancies and inflammatory diseases: mechanisms and clinical studies. J Hematol Oncol 2022; 15:138. [PMID: 36183125 PMCID: PMC9526392 DOI: 10.1186/s13045-022-01353-w] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/07/2022] [Indexed: 11/28/2022] Open
Abstract
Bruton's tyrosine kinase (BTK) is an essential component of multiple signaling pathways that regulate B cell and myeloid cell proliferation, survival, and functions, making it a promising therapeutic target for various B cell malignancies and inflammatory diseases. Five small molecule inhibitors have shown remarkable efficacy and have been approved to treat different types of hematological cancers, including ibrutinib, acalabrutinib, zanubrutinib, tirabrutinib, and orelabrutinib. The first-in-class agent, ibrutinib, has created a new era of chemotherapy-free treatment of B cell malignancies. Ibrutinib is so popular and became the fourth top-selling cancer drug worldwide in 2021. To reduce the off-target effects and overcome the acquired resistance of ibrutinib, significant efforts have been made in developing highly selective second- and third-generation BTK inhibitors and various combination approaches. Over the past few years, BTK inhibitors have also been repurposed for the treatment of inflammatory diseases. Promising data have been obtained from preclinical and early-phase clinical studies. In this review, we summarized current progress in applying BTK inhibitors in the treatment of hematological malignancies and inflammatory disorders, highlighting available results from clinical studies.
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Affiliation(s)
- Aqu Alu
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hong Lei
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xuejiao Han
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yuquan Wei
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiawei Wei
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China.
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21
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Hatashima A, Karami M, Shadman M. Approved and emerging Bruton's tyrosine kinase inhibitors for the treatment of chronic lymphocytic leukemia. Expert Opin Pharmacother 2022; 23:1545-1557. [PMID: 35973973 DOI: 10.1080/14656566.2022.2113384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The Bruton's tyrosine kinase (BTK) pathway has proven to be an effective and transformative therapeutic target in the treatment of chronic lymphocytic leukemia (CLL), fueling the growth of BTK inhibitors (BTKis) and landmark approval of first-generation BTKi, ibrutinib. However, ibrutinib's side effect profile left an unmet need for BTKis with improved tolerability thus spurring the subsequent development of second-generation acalabrutinib and zanubrutinib. The treatment landscape continues to evolve with studies using BTKi combination therapies, notably with venetoclax, with and without an anti-CD20 monoclonal antibody as well as third generation BTKis aimed to overcome BTKi resistance. AREAS COVERED This article details the current literature highlighting the efficacy, toxicities, and potential therapeutic combinations of approved and preclinical BTKis. EXPERT OPINION BTKis have signaled the start of a new treatment paradigm in CLL and improved clinical outcomes especially for patients with high-risk disease. However, drug resistance, low CR rates, and indefinite treatment necessitate the development of novel BTKis and fixed duration combination therapy. The results from recently completed and ongoing clinical trials are eagerly awaited with the potential promise of reduced treatment durations and financial burden while achieving durable remissions.
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Affiliation(s)
| | | | - Mazyar Shadman
- Fred Hutch Cancer Center, Seattle WA.,University of Washington, Seattle WA
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22
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Chen ST, Azali L, Rosen L, Zhao Q, Wiczer T, Palettas M, Gambril J, Kola-Kehinde O, Ruz P, Kalathoor S, Rogers K, Kittai A, Grever M, Awan F, Byrd JC, Woyach J, Bhat SA, Addison D. Hypertension and incident cardiovascular events after next-generation BTKi therapy initiation. J Hematol Oncol 2022; 15:92. [PMID: 35836241 PMCID: PMC9281099 DOI: 10.1186/s13045-022-01302-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/22/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Post-market analyses revealed unanticipated links between first-generation Bruton's tyrosine kinase inhibitor (BTKi) therapy, ibrutinib, and profound early hypertension. Yet, whether this is seen with novel selective second (next)-generation BTKi therapy, acalabrutinib, is unknown. METHODS Leveraging a large cohort of consecutive B cell cancer patients treated with acalabrutinib from 2014 to 2020, we assessed the incidence and ramifications of new or worsened hypertension [systolic blood pressure (SBP) ≥ 130 mmHg] after acalabrutinib initiation. Secondary endpoints were major cardiovascular events (MACE: arrhythmias, myocardial infarction, stroke, heart failure, cardiac death) and disease progression. Observed incident hypertension rates were compared to Framingham heart-predicted and ibrutinib-related rates. Multivariable regression and survival analysis were used to define factors associated with new/worsened hypertension and MACE, and the relationship between early SBP increase and MACE risk. Further, the effect of standard antihypertensive classes on the prevention of acalabrutinib-related hypertension was assessed. RESULTS Overall, from 280 acalabrutinib-treated patients, 48.9% developed new/worsened hypertension over a median of 41 months. The cumulative incidence of new hypertension by 1 year was 53.9%, including 1.7% with high-grade (≥ 3) hypertension. Applying the JNC 8 cutoff BP of ≥ 140/90 mmHg, the observed new hypertension rate was 20.5% at 1 year, > eightfold higher than the Framingham-predicted rate of 2.4% (RR 8.5, P < 0.001), yet 34.1% lower than ibrutinib (12.9 observed-to-expected ratio, P < 0.001). In multivariable regression, prior arrhythmias and Black ancestry were associated with new hypertension (HR 1.63, HR 4.35, P < 0.05). The degree of SBP rise within 1 year of treatment initiation predicted MACE risk (42% HR increase for each + 5 mmHg SBP rise, P < 0.001). No single antihypertensive class prevented worsened acalabrutinib-related hypertension. CONCLUSIONS Collectively, these data suggest that hypertension may be a class effect of BTKi therapies and precedes major cardiotoxic events.
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Affiliation(s)
- Sunnia T Chen
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, OH, USA
| | - Leylah Azali
- Department of Pharmacy, James Cancer Hospital and Solove Research Institute at The Ohio State University, Columbus, OH, USA
| | - Lindsay Rosen
- Department of Pharmacy, James Cancer Hospital and Solove Research Institute at The Ohio State University, Columbus, OH, USA
| | - Qiuhong Zhao
- Division of Hematology, The Ohio State University, Columbus, OH, USA
| | - Tracy Wiczer
- Department of Pharmacy, James Cancer Hospital and Solove Research Institute at The Ohio State University, Columbus, OH, USA
| | - Marilly Palettas
- Center for Biostatistics, Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA
| | - John Gambril
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, OH, USA
| | - Onaopepo Kola-Kehinde
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, OH, USA
| | - Patrick Ruz
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, OH, USA
| | - Sujay Kalathoor
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, OH, USA
| | - Kerry Rogers
- Division of Hematology, The Ohio State University, Columbus, OH, USA
| | - Adam Kittai
- Division of Hematology, The Ohio State University, Columbus, OH, USA
| | - Michael Grever
- Division of Hematology, The Ohio State University, Columbus, OH, USA
| | - Farrukh Awan
- Division of Hematology, UT-Southwestern, Dallas, TX, USA
| | - John C Byrd
- Department of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Jennifer Woyach
- Division of Hematology, The Ohio State University, Columbus, OH, USA
| | - Seema A Bhat
- Division of Hematology, The Ohio State University, Columbus, OH, USA
| | - Daniel Addison
- Cardio-Oncology Program, Division of Cardiology, The Ohio State University Medical Center, Columbus, OH, USA.
- Division of Cancer Prevention and Control, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA.
- Division of Cardiovascular Medicine, Davis Heart & Lung Research Institute, 473 West 12th Avenue, Suite 200, Columbus, OH, 43210, USA.
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23
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Abstract
INTRODUCTION The development of Bruton<apos;>s Tyrosine Kinase (BTK) inhibitors has transformed the treatment of B-cell malignancies and other non-malignant conditions. Management of the unique cardiotoxic profile of these agents requires prompt recognition and a multi-disciplinary approach. AREAS COVERED The increasing indications and addition of newer agents to clinical practice and emergence of BTK inhibitor-related cardiac adverse events have complicated the management decisions for utilization of this class of therapy. We review the incidence, mechanisms, and management approaches for BTK inhibitor-related atrial fibrillation, hypertension, and ventricular arrhythmias. EXPERT OPINION The newer BTK inhibitor acalabrutinib represents a new standard of care in front-line chronic lymphocytic leukemia (CLL) given the results of the ELEVATE-RR trial demonstrating comparable efficacy and a more favorable toxicity profile especially with regard to cardiac adverse events as compared to ibrutinib. Often not recognized by clinicians, BTK inhibitor-induced hypertension is common and can be severe, requiring prompt recognition and initiation or adjustment of anti-hypertensive medications to prevent major adverse cardiac outcomes. Novel BTK inhibitors in development are being designed to overcome the patterns of resistance from first-generation agents and to minimize off-target kinase activity, with promising toxicity profiles in early trials.
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Affiliation(s)
- Bradley W Christensen
- Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical CenterHarold C. , Dallas, TX, USA
| | - Vlad G Zaha
- Division of Cardiovascular Medicine, Department of Medicine, Advanced Imaging Research Center, Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Farrukh T Awan
- Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical CenterHarold C. , Dallas, TX, USA
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24
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Therapeutic options for relapsed/refractory mantle cell lymphoma. Blood 2022; 139:666-677. [PMID: 34679161 PMCID: PMC9710495 DOI: 10.1182/blood.2021013326] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/20/2021] [Indexed: 02/05/2023] Open
Abstract
Mantle cell lymphoma (MCL) is an uncommon subtype of non-Hodgkin lymphoma in which immunochemotherapy, with or without high-dose therapy, and autologous stem cell transplantation remain standard frontline therapies. Despite their clear efficacy, patients inevitably relapse and require subsequent therapy. In this review, we discuss the key therapeutic approaches in the management of relapsed MCL, covering in depth the data supporting the use of covalent Bruton tyrosine kinase (BTK) inhibitors at first or subsequent relapse. We describe the outcomes of patients progressing through BTK inhibitors and discuss the mechanisms of covalent BTKi resistance and treatment options after covalent treatment with BTKi. Options in this setting may depend on treatment availability, patient's and physician's preference, and the patient's age and comorbidity status. We discuss the rapid recent development of anti-CD19 chimeric antigen receptor T-cell therapy, as well as the utility of allogenic stem cell transplantation and novel therapies, such as noncovalent, reversible BTK inhibitors; ROR1 antibody drug conjugates; and bispecific antibodies.
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25
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Vitale C, Gibbons JL, Ferrajoli A. Targeted Treatment of Chronic Lymphocytic Leukemia: Clinical Utility of Acalabrutinib. Onco Targets Ther 2022; 14:5507-5519. [PMID: 35002256 PMCID: PMC8721287 DOI: 10.2147/ott.s303060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 12/15/2021] [Indexed: 12/21/2022] Open
Abstract
In chronic lymphocytic leukemia (CLL), a deeper understanding of the disease biology led over the last decade to the development and clinical use of different targeted drugs, including Bruton tyrosine kinase (BTK) inhibitors. The first BTK inhibitor approved for clinical use is ibrutinib, which showed excellent efficacy and good tolerability. More recently, the interest is growing for novel more selective BTK inhibitors that may reduce the off-target effects of the drug, thus minimizing side effects and subsequent treatment interruptions or discontinuations. Acalabrutinib is an orally administered irreversible BTK inhibitor, characterized by the lack of inhibition towards other kinases. In this review, we present the most recent data from clinical trials on the clinical efficacy of acalabrutinib and acalabrutinib-based combinations for the treatment of patients with relapsed/refractory and treatment-naïve CLL. We delineate the safety profile of the drug, describe side effects of interest and discuss the clinical management of patients receiving acalabrutinib. Due to its efficacy and the favorable safety profile, acalabrutinib has emerged as a viable therapy option in the current landscape of multiple approved treatments for CLL.
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Affiliation(s)
- Candida Vitale
- Department of Molecular Biotechnology and Health Sciences, University of Torino and University Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, Torino, Italy
| | - Jamie Lynn Gibbons
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Alessandra Ferrajoli
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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26
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Eyre TA, Schuh A, Wierda WG, Brown JR, Ghia P, Pagel JM, Furman RR, Cheung J, Hamdy A, Izumi R, Patel P, Wang MH, Xu Y, Byrd JC, Hillmen P. Acalabrutinib monotherapy for treatment of chronic lymphocytic leukaemia (ACE-CL-001): analysis of the Richter transformation cohort of an open-label, single-arm, phase 1-2 study. Lancet Haematol 2021; 8:e912-e921. [PMID: 34735860 DOI: 10.1016/s2352-3026(21)00305-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Patients with chronic lymphocytic leukaemia who progress to Richter transformation (diffuse large B-cell lymphoma morphology) have few therapeutic options. We analysed data from the Richter transformation cohort of a larger, ongoing, phase 1-2, single-arm study evaluating the safety and activity of the selective, irreversible Bruton's tyrosine kinase inhibitor acalabrutinib for the treatment of chronic lymphocytic leukaemia or small lymphocytic lymphoma. METHODS For this open-label, single-arm, phase 1-2 study, patients aged 18 years or older with biopsy-proven treatment-naive or previously treated diffuse large B-cell lymphoma (Richter transformation) or prolymphocytic leukaemia transformation (Eastern Cooperative Oncology Group performance status ≤2) were assigned to receive oral acalabrutinib 200 mg twice daily as monotherapy until disease progression or toxicity. Patients were enrolled across seven centres from four countries. Safety and pharmacokinetics were assessed as primary endpoints; secondary endpoints were overall response rate, duration of response, and progression-free survival. Safety was assessed in the all-treated population (patients who received ≥1 dose), and activity was assessed in the all-treated population (for progression-free survival) and efficacy-evaluable population (for response rate; patients in the all-treated population with ≥1 response assessment after the first dose). This trial is registered with ClinicalTrials.gov (NCT02029443). FINDINGS Between Sept 2, 2014, and April 25, 2016, 25 patients with Richter transformation were enrolled; 12 (48%) were male and 23 (92%) were White. As of data cutoff (March 1, 2021), two (8%) of 25 patients remained on acalabrutinib. The median time on study was 2·6 months (IQR 1·8-8·4). The most common adverse events (all grades) were diarrhoea (12 [48%] of 25 patients), headache (11 [44%]), and anaemia (eight [32%]). The most common grade 3-4 adverse events were neutropenia (seven [28%] of 25) and anaemia (five [20%]). The most common reason for treatment discontinuation was disease progression (17 [68%] of 25 patients). 11 (44%) deaths were reported within 30 days of the last acalabrutinib dose; none was considered treatment-related. Acalabrutinib was rapidly absorbed and eliminated, with similar day 1 and day 8 exposures. The overall response rate was 40·0% (95% CI 21·1-61·3), with two (8%) of 25 patients having a complete response and eight (32%) having a partial response; the median duration of response was 6·2 months (95% CI 0·3-14·8). Median progression-free survival in the overall cohort was 3·2 months (95% CI 1·8-4·0). INTERPRETATION Acalabrutinib appears to be generally well tolerated, although progression-free survival was relatively poor in this cohort of patients with Richter transformation. On the basis of these findings, the use of acalabrutinib monotherapy in this setting is limited; however, further assessment of acalabrutinib as part of combination-based regimens for patients with Richter transformation is warranted. FUNDING Acerta Pharma, a member of the AstraZeneca Group.
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Affiliation(s)
- Toby A Eyre
- Cancer and Haematology Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
| | - Anna Schuh
- Department of Oncology, University of Oxford, Oxford, UK
| | | | | | - Paolo Ghia
- Università Vita-Salute San Raffaele and IRCCS Ospedale San Raffaele, Milan, Italy
| | | | - Richard R Furman
- Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA
| | | | | | | | | | | | - Yan Xu
- AstraZeneca, South San Francisco, CA, USA
| | - John C Byrd
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
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