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Frenking JH, Zhou X, Wagner V, Hielscher T, Kauer J, Mai EK, Friedrich MJ, Michel CS, Hajiyianni M, Breitkreutz I, Costello P, Nadeem O, Weinhold N, Goldschmidt H, Schmitt A, Luft T, Schmitt M, Müller-Tidow C, Topp M, Einsele H, Dreger P, Munshi NC, Sperling AS, Rasche L, Sauer S, Raab MS. EASIX-guided risk stratification for complications and outcome after CAR T-cell therapy with ide-cel in relapsed/refractory multiple myeloma. J Immunother Cancer 2024; 12:e009220. [PMID: 39379098 PMCID: PMC11459298 DOI: 10.1136/jitc-2024-009220] [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] [Accepted: 09/08/2024] [Indexed: 10/10/2024] Open
Abstract
BACKGROUND Chimeric antigen receptor (CAR) T-cell therapy has demonstrated significant benefits in the treatment of relapsed/refractory multiple myeloma (RRMM). However, these outcomes can be compromised by severe complications, including cytokine release syndrome, immune effector cell-associated neurotoxicity syndrome (ICANS) and immune effector cell-associated hematotoxicity (ICAHT), predisposing for life-threatening infections. METHODS This retrospective observational study examined a total of 129 patients with RRMM who had received idecabtagene vicleucel (ide-cel) at two major myeloma centers in Germany and one center in the USA to assess the Endothelial Activation and Stress Index (EASIX) as a risk marker for an unfavorable clinical course and outcome after CAR T-cell therapy. EASIX is calculated by lactate dehydrogenase (U/L) × creatinine (mg/dL) / platelets (109 cells/L) and was determined before lymphodepletion (baseline) and at the day of CAR T-cell infusion (day 0). The analysis was extended to EASIX derivatives and the CAR-HEMATOTOX score. RESULTS An elevated baseline EASIX (>median) was identified as a risk marker for severe late ICAHT, manifesting with an impaired hematopoietic reconstitution and pronounced cytopenias during the late post-CAR-T period. Patients with high EASIX levels (>upper quartile) were particularly at risk, as evidenced by an increased rate of an aplastic phenotype of neutrophil recovery, severe late-onset infections and ICANS. Finally, we found associations between baseline EASIX and an inferior progression-free and overall survival. Moreover, the EASIX at day 0 also demonstrated potential to serve as a risk marker for post-CAR-T complications and adverse outcomes. CONCLUSIONS In conclusion, EASIX aids in risk stratification at clinically relevant time points prior to CAR T-cell therapy with ide-cel. Increased EASIX levels might help clinicians to identify vulnerable patients to adapt peri-CAR-T management at an early stage.
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Affiliation(s)
- Jan H Frenking
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
- Clinical Cooperation Unit Molecular Hematology/Oncology, German Cancer Research Center, Heidelberg, Baden-Württemberg, Germany
| | - Xiang Zhou
- Internal Medicine II, University Hospital of Würzburg, Würzburg, Bayern, Germany
| | - Vivien Wagner
- Internal Medicine II, University Hospital of Würzburg, Würzburg, Bayern, Germany
| | - Thomas Hielscher
- Division of Biostatistics, German Cancer Research Center, Heidelberg, Baden-Württemberg, Germany
| | - Joseph Kauer
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
- Molecular Medicine Partnership Unit, Heidelberg, Baden-Württemberg, Germany
| | - Elias K Mai
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Mirco J Friedrich
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
- Eli and Edythe L Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA
| | - Christian S Michel
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Marina Hajiyianni
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Iris Breitkreutz
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Patrick Costello
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Omar Nadeem
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Niels Weinhold
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
- Clinical Cooperation Unit Molecular Hematology/Oncology, German Cancer Research Center, Heidelberg, Baden-Württemberg, Germany
| | - Hartmut Goldschmidt
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
- National Center for Tumor Diseases, Heidelberg, Baden-Württemberg, Germany
| | - Anita Schmitt
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Thomas Luft
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Michael Schmitt
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Carsten Müller-Tidow
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
- National Center for Tumor Diseases, Heidelberg, Baden-Württemberg, Germany
| | - Max Topp
- Internal Medicine II, University Hospital of Würzburg, Würzburg, Bayern, Germany
| | - Hermann Einsele
- Internal Medicine II, University Hospital of Würzburg, Würzburg, Bayern, Germany
| | - Peter Dreger
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Nikhil C Munshi
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Adam S Sperling
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
- Division of Hematology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Leo Rasche
- Internal Medicine II, University Hospital of Würzburg, Würzburg, Bayern, Germany
| | - Sandra Sauer
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Marc S Raab
- Department of Medicine V, University Hospital and Medical Faculty Heidelberg, Heidelberg, Baden-Württemberg, Germany
- Clinical Cooperation Unit Molecular Hematology/Oncology, German Cancer Research Center, Heidelberg, Baden-Württemberg, Germany
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Shahid Z, Jain T, Dioverti V, Pennisi M, Mikkilineni L, Thiruvengadam SK, Shah NN, Dadwal S, Papanicolaou G, Hamadani M, Carpenter PA, Alfaro GM, Seo SK, Hill JA. Best Practice Considerations by The American Society of Transplant and Cellular Therapy: Infection Prevention and Management After Chimeric Antigen Receptor T Cell Therapy for Hematological Malignancies. Transplant Cell Ther 2024; 30:955-969. [PMID: 39084261 DOI: 10.1016/j.jtct.2024.07.018] [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: 07/23/2024] [Accepted: 07/24/2024] [Indexed: 08/02/2024]
Abstract
Chimeric antigen receptor (CAR) T-cell therapy is rapidly advancing, offering promising treatments for patients with hematological malignancy. However, associated infectious complications remain a significant concern because of their contribution to patient morbidity and non-relapse mortality. Recent epidemiological insights shed light on risk factors for infections after CAR T-cell therapy. However, the available evidence is predominantly retrospective, highlighting a need for further prospective studies. Institutions are challenged with managing infections after CAR T-cell therapy but variations in the approaches taken underscore the importance of standardizing infection prevention and management protocols across different healthcare settings. Therefore, the Infectious Diseases Special Interest Group of the American Society of Transplantation and Cellular Therapy assembled an expert panel to develop best practice considerations. The aim was to guide healthcare professionals in optimizing infection prevention and management for CAR T-cell therapy recipients and advocates for early consultation of Infectious Diseases during treatment planning phases given the complexities involved. By synthesizing current evidence and expert opinion these best practice considerations provide the basis for understanding infection risk after CAR T-cell therapies and propose risk-mitigating strategies in children, adolescents, and adults. Continued research and collaboration will be essential to refining and effectively implementing these recommendations.
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Affiliation(s)
- Zainab Shahid
- Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
| | - Tania Jain
- Division of Hematological Malignancies and Bone Marrow Transplantation, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland
| | - Veronica Dioverti
- Division of Infectious Disease, Department of Medicine, John Hopkins School of Medicine, Baltimore, Maryland
| | - Martini Pennisi
- Division of Hematology and Stem Cell Transplantation, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Lekha Mikkilineni
- Division of Bone and Marrow Transplant & Cellular Therapies, Stanford School of Medicine, Palo Alto, California
| | - Swetha Kambhampati Thiruvengadam
- Division of Lymphoma, Department of Hematology & Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, California
| | - Nirali N Shah
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Sanjeet Dadwal
- Division of Infectious Disease, Department of Medicine, City of Hope National Medical Center, Duarte, California
| | - Genovefa Papanicolaou
- Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Mehdi Hamadani
- Bone Marrow Transplant & Cellular Therapy Program, Medical College of Wisconsin, Milwaukee, Wisconsin; Center for International Blood and Marrow Transplant Research, Milwaukee, Wisconsin
| | - Paul A Carpenter
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington
| | - Gabriela Maron Alfaro
- Department of Infectious Diseases, St. Jude Children's Research Hospital and Department of Pediatrics, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Susan K Seo
- Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Joshua A Hill
- Vaccine and Infectious Disease Division, Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington
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Grégoire C, Coutinho de Oliveira B, Caimi PF, Caers J, Melenhorst JJ. Chimeric antigen receptor T-cell therapy for haematological malignancies: Insights from fundamental and translational research to bedside practice. Br J Haematol 2024. [PMID: 39262037 DOI: 10.1111/bjh.19751] [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: 06/09/2024] [Accepted: 08/26/2024] [Indexed: 09/13/2024]
Abstract
Autologous chimeric antigen receptor (CAR) T-cell therapy has revolutionized the treatment of lymphoid malignancies, leading to the approval of CD19-CAR T cells for B-cell lymphomas and acute leukaemia, and more recently, B-cell maturation antigen-CAR T cells for multiple myeloma. The long-term follow-up of patients treated in the early clinical trials demonstrates the possibility for long-term remission, suggesting a cure. This is associated with a low incidence of significant long-term side effects and a rapid improvement in the quality of life for responders. In contrast, other types of immunotherapies require prolonged treatments or carry the risk of long-term side effects impairing the quality of life. Despite impressive results, some patients still experience treatment failure or ultimately relapse, underscoring the imperative to improve CAR T-cell therapies and gain a better understanding of their determinants of efficacy to maximize positive outcomes. While the next-generation of CAR T cells will undoubtingly be more potent, there are already opportunities for optimization when utilizing the currently available CAR T cells. This review article aims to summarize the current evidence from clinical, translational and fundamental research, providing clinicians with insights to enhance their understanding and use of CAR T cells.
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Affiliation(s)
- Céline Grégoire
- Center for ImmunoTherapy and Precision Immuno-Oncology (CITI), Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
- Department of Clinical Hematology and Laboratory of Hematology (GIGA I3), University Hospital Center of Liège and University of Liège, Liège, Belgium
| | - Beatriz Coutinho de Oliveira
- Center for ImmunoTherapy and Precision Immuno-Oncology (CITI), Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Paolo F Caimi
- Department of Hematology and Oncology, Cleveland Clinic Taussig Cancer Institute, Cleveland, Ohio, USA
| | - Jo Caers
- Department of Clinical Hematology and Laboratory of Hematology (GIGA I3), University Hospital Center of Liège and University of Liège, Liège, Belgium
| | - Jan Joseph Melenhorst
- Center for ImmunoTherapy and Precision Immuno-Oncology (CITI), Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
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4
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Wan H, Weng S, Sheng S, Kuang Z, Wang Q, Hu L. Chimeric antigen receptor T-cell therapy in relapsed or refractory mantle cell lymphoma: a systematic review and meta-analysis. Front Immunol 2024; 15:1435127. [PMID: 39308870 PMCID: PMC11412868 DOI: 10.3389/fimmu.2024.1435127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Accepted: 08/12/2024] [Indexed: 09/25/2024] Open
Abstract
Background Chimeric antigen receptor (CAR) T-cell therapy (CAR-T therapy) has demonstrated significant efficacy in the ZUMA-2 study. After regulatory approvals, several clinical trials and real-world studies on CAR-T therapy for relapsed or refractory mantle cell lymphoma (R/R MCL) were conducted. However, data on clinical safety and efficacy are inconsistent. In this study, we aimed to conduct a systematic analysis of the effectiveness and safety of CAR-T therapy across a wider and more representative cohort of patients with R/R MCL. Methods We performed a systematic review and meta-analysis of studies on patients with R/R MCL who received CAR-T cell therapy. Data were extracted and consolidated, with primary focus on the evaluation of safety and efficacy outcome measures. This study has not been registered with PROSPERO. Results This meta-analysis identified and included 16 studies with 984 patients. The pooled estimate for overall response rate (ORR) was 89%; complete remission (CR) rate was 74%. The 6-month and 12-month progression-free survival (PFS) rates were 69% and 53%, respectively, while the overall survival (OS) rates were 80% and 69%, respectively. Cytokine release syndrome (CRS) of grade 3 or higher was observed in 8% of patients, whereas neurotoxicity of grade 3 or higher was observed in 22% of patients. The risk of bias was assessed as low in 9 studies and moderate in 7 studies. Conclusion CAR-T therapy exhibited promising efficacy and manageable adverse reactions in patients with R/R MCL.
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Affiliation(s)
| | | | | | | | - Qingming Wang
- Jiangxi Provincial Key Laboratory of Hematological Diseases, Department of Hematology,
The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Linhui Hu
- Jiangxi Provincial Key Laboratory of Hematological Diseases, Department of Hematology,
The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
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5
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Cordas Dos Santos DM, Tix T, Shouval R, Gafter-Gvili A, Alberge JB, Cliff ERS, Theurich S, von Bergwelt-Baildon M, Ghobrial IM, Subklewe M, Perales MA, Rejeski K. A systematic review and meta-analysis of nonrelapse mortality after CAR T cell therapy. Nat Med 2024; 30:2667-2678. [PMID: 38977912 DOI: 10.1038/s41591-024-03084-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 05/22/2024] [Indexed: 07/10/2024]
Abstract
Although chimeric antigen receptor (CAR) T cell therapy represents a transformative immunotherapy, it is also associated with distinct toxicities that contribute to morbidity and mortality. In this systematic review and meta-analysis, we searched MEDLINE, Embase and CINAHL (Cochrane) for reports of nonrelapse mortality (NRM) after CAR T cell therapy in lymphoma and multiple myeloma up to March 2024. After extraction of causes and numbers of death, we analyzed NRM point estimates using random-effect models. We identified 7,604 patients across 18 clinical trials and 28 real-world studies. NRM point estimates varied across disease entities and were highest in patients with mantle-cell lymphoma (10.6%), followed by multiple myeloma (8.0%), large B cell lymphoma (6.1%) and indolent lymphoma (5.7%). Entity-specific meta-regression models for large B cell lymphoma and multiple myeloma revealed that axicabtagene ciloleucel and ciltacabtagene autoleucel were independently associated with increased NRM point estimates, respectively. Of 574 reported nonrelapse deaths, over half were attributed to infections (50.9%), followed by other malignancies (7.8%) and cardiovascular/respiratory events (7.3%). Conversely, the CAR T cell-specific side effects, immune effector cell-associated neurotoxicity syndrome/neurotoxicity, cytokine release syndrome and hemophagocytic lymphohistiocytosis, represented only a minority of nonrelapse deaths (cumulatively 11.5%). Our findings underline the critical importance of infectious complications after CAR T cell therapy and support the comprehensive reporting of NRM, including specific causes and long-term outcomes.
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Affiliation(s)
- David M Cordas Dos Santos
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Department of Medicine III-Hematology/Oncology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Tobias Tix
- Department of Medicine III-Hematology/Oncology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Roni Shouval
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Anat Gafter-Gvili
- Department of Medicine A and Institute of Hematology, Davidoff Cancer Center, Rabin Medical Center, Beilinson Hospital, Petah-Tikva, Israel
- Tel Aviv University, Tel Aviv, Israel
| | - Jean-Baptiste Alberge
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Edward R Scheffer Cliff
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Program on Regulation, Therapeutics and Law, Brigham and Women's Hospital, Boston, MA, USA
| | - Sebastian Theurich
- Department of Medicine III-Hematology/Oncology, LMU University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium, Partner Site Munich, Munich, Germany
| | - Michael von Bergwelt-Baildon
- Department of Medicine III-Hematology/Oncology, LMU University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium, Partner Site Munich, Munich, Germany
| | - Irene M Ghobrial
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Marion Subklewe
- Department of Medicine III-Hematology/Oncology, LMU University Hospital, LMU Munich, Munich, Germany
- German Cancer Consortium, Partner Site Munich, Munich, Germany
| | - Miguel-Angel Perales
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Kai Rejeski
- Department of Medicine III-Hematology/Oncology, LMU University Hospital, LMU Munich, Munich, Germany.
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA.
- German Cancer Consortium, Partner Site Munich, Munich, Germany.
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Piñana JL, Giménez E, Vázquez L, Marcos MÁ, Guerreiro M, Duarte R, Pérez A, de Miguel C, Espigado I, González-Vicent M, Suarez-Lledó M, García-Cadenas I, Martino R, Cedillo A, Rovira M, de la Cámara R, Navarro D, Solano C. Update on Cytomegalovirus Infection Management in Allogeneic Hematopoietic Stem Cell Transplant Recipients. A Consensus Document of the Spanish Group for Hematopoietic Transplantation and Cell Therapy (GETH-TC). Mediterr J Hematol Infect Dis 2024; 16:e2024065. [PMID: 39258183 PMCID: PMC11385272 DOI: 10.4084/mjhid.2024.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Accepted: 08/02/2024] [Indexed: 09/12/2024] Open
Abstract
Background Cytomegalovirus (CMV) infection is a common complication following allogeneic hematopoietic stem cell transplantation (allo-HSCT) and in patients receiving novel hematological therapies. Its impact on morbidity and mortality necessitates effective management strategies. Despite recent advances in diagnostics and treatment, unresolved questions persist regarding monitoring and treatment, prompting the need for updated recommendations. Methods A consensus was reached among a panel of experts selected for their expertise in CMV research and clinical practice. Key clinical areas and questions were identified based on previous surveys and literature reviews. Recommendations were formulated through consensus and graded using established guidelines. Results Recommendations were provided for virological monitoring, including the timing and frequency of CMV DNAemia surveillance, especially during letermovir (LMV) prophylaxis. We evaluated the role of CMV DNA load quantification in diagnosing CMV disease, particularly pneumonia and gastrointestinal involvement, along with the utility of specific CMV immune monitoring in identifying at-risk patients. Strategies for tailoring LMV prophylaxis, managing breakthrough DNAemia, and implementing secondary prophylaxis in refractory cases were outlined. Additionally, criteria for initiating early antiviral treatment based on viral load dynamics were discussed. Conclusion The consensus provides updated recommendations for managing CMV infection in hematological patients, focusing on unresolved issues in monitoring, prophylaxis, treatment, and resistance. These recommendations aim to guide clinical practice and improve outcomes in this high-risk population. Further research is warranted to validate these recommendations and address ongoing challenges in CMV management with emerging antiviral combinations, particularly in pediatric populations.
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Affiliation(s)
- José Luis Piñana
- Hematology Service, Hospital Clinico Universitario, INCLIVA Biomedical Research Institute, Valencia, Spain
| | - Estela Giménez
- Microbiology Service, Hospital Clinico Universitario, INCLIVA Biomedical Research Institute, Valencia, Spain
| | - Lourdes Vázquez
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca, Spain
| | | | - Manuel Guerreiro
- Hematology Service, Hospital Universitario y Politécnico La Fe. Health Research, Valencia, Spain
| | - Rafael Duarte
- Hematology Service, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Ariadna Pérez
- Hematology Service, Hospital Clinico Universitario, INCLIVA Biomedical Research Institute, Valencia, Spain
| | - Carlos de Miguel
- Hematology Service, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Ildefonso Espigado
- Hematology Service, Hospital Universitario Virgen del Rocío, Sevilla, Spain
| | | | - María Suarez-Lledó
- BMT Unit, Haematology Department, Institute of Haematology and Oncology, IDIBAPS, Hospital Clinic, University of Barcelona, Barcelona, Spain. Josep Carreras Leukaemia Research Foundation
| | | | - Rodrigo Martino
- Hematology Service. Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Angel Cedillo
- Spanish Hematopoietic Stem Cell Transplantation and Cell Therapy Group (GETH-TC) Secretary, Madrid, Spain
| | - Monserrat Rovira
- BMT Unit, Haematology Department, Institute of Haematology and Oncology, IDIBAPS, Hospital Clinic, University of Barcelona, Barcelona, Spain. Josep Carreras Leukaemia Research Foundation
| | | | - David Navarro
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca, Spain
- Department of Microbiology School of Medicine, University of Valencia, Valencia, Spain
| | - Carlos Solano
- Hematology Service, Hospital Clinico Universitario, INCLIVA Biomedical Research Institute, Valencia, Spain
- Department of Medicine, School of Medicine, University of Valencia, Valencia, Spain
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Arya S, Shahid Z. Overview of infectious complications among CAR T- cell therapy recipients. Front Oncol 2024; 14:1398078. [PMID: 39026972 PMCID: PMC11255439 DOI: 10.3389/fonc.2024.1398078] [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: 03/08/2024] [Accepted: 06/04/2024] [Indexed: 07/20/2024] Open
Abstract
Chimeric antigen receptor-modified T cell (CAR T-cell) therapy has revolutionized the management of hematological malignancies. In addition to impressive malignancy-related outcomes, CAR T-cell therapy has significant toxicity-related adverse events, including cytokine release syndrome (CRS), immune effector cell associated neurotoxicity syndrome (ICANS), immune effector cell-associated hematotoxicity (ICAHT), and opportunistic infections. Different CAR T-cell targets have different epidemiology and risk factors for infection, and these targets result in different long-term immunodeficiency states due to their distinct on-target and off- tumor effects. These effects are exacerbated by the use of multimodal immunosuppression in the management of CRS and ICANS. The most effective course of action for managing infectious complications involves determining screening, prophylactic, and monitoring strategies and understanding the role of immunoglobulin replacement and re-vaccination strategies. This involves considering the nature of prior immunomodulating therapies, underlying malignancy, the CAR T-cell target, and the development and management of related adverse events. In conclusion, we now have an increasing understanding of infection management for CAR T-cell recipients. As additional effector cells and CAR T-cell targets become available, infection management strategies will continue to evolve.
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Affiliation(s)
- Swarn Arya
- Infectious Disease Service, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Zainab Shahid
- Infectious Disease Service, Memorial Sloan Kettering Cancer Center, New York, NY, United States
- Department of Medicine, Weill Cornell School of Medicine, New York, NY, United States
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8
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Brudno JN, Kochenderfer JN. Current understanding and management of CAR T cell-associated toxicities. Nat Rev Clin Oncol 2024; 21:501-521. [PMID: 38769449 DOI: 10.1038/s41571-024-00903-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2024] [Indexed: 05/22/2024]
Abstract
Chimeric antigen receptor (CAR) T cell therapy has revolutionized the treatment of several haematological malignancies and is being investigated in patients with various solid tumours. Characteristic CAR T cell-associated toxicities such as cytokine-release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS) are now well-recognized, and improved supportive care and management with immunosuppressive agents has made CAR T cell therapy safer and more feasible than it was when the first regulatory approvals of such treatments were granted in 2017. The increasing clinical experience with these therapies has also improved recognition of previously less well-defined toxicities, including movement disorders, immune effector cell-associated haematotoxicity (ICAHT) and immune effector cell-associated haemophagocytic lymphohistiocytosis-like syndrome (IEC-HS), as well as the substantial risk of infection in patients with persistent CAR T cell-induced B cell aplasia and hypogammaglobulinaemia. A more diverse selection of immunosuppressive and supportive-care pharmacotherapies is now being utilized for toxicity management, yet no universal algorithm for their application exists. As CAR T cell products targeting new antigens are developed, additional toxicities involving damage to non-malignant tissues expressing the target antigen are a potential hurdle. Continued prospective evaluation of toxicity management strategies and the design of less-toxic CAR T cell products are both crucial for ongoing success in this field. In this Review, we discuss the evolving understanding and clinical management of CAR T cell-associated toxicities.
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Affiliation(s)
- Jennifer N Brudno
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - James N Kochenderfer
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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9
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Hu B, Korsos V, Palomba ML. Chimeric antigen receptor T-cell therapy for aggressive B-cell lymphomas. Front Oncol 2024; 14:1394057. [PMID: 39011476 PMCID: PMC11246842 DOI: 10.3389/fonc.2024.1394057] [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: 02/29/2024] [Accepted: 05/21/2024] [Indexed: 07/17/2024] Open
Abstract
Chimeric antigen receptor (CAR) T-cell therapy is a revolutionary approach in the treatment of lymphoma. This review article provides an overview of the four FDA-approved CAR T-cell products for aggressive B-cell lymphoma, including diffuse large B-cell lymphoma and mantle cell lymphoma, highlighting their efficacy and toxicity as well as discussing future directions.
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Affiliation(s)
- Bei Hu
- Department of Hematologic Oncology and Blood Disorders, Atrium Health Levine Cancer Institute/Wake Forest School of Medicine, Charlotte, NC, United States
| | - Victoria Korsos
- Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - M. Lia Palomba
- Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States
- Lymphoma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States
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10
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O'Reilly MA, Wilson W, Burns D, Kuhnl A, Seymour F, Uttenthal B, Besley C, Alajangi R, Creasey T, Paneesha S, Elliot J, Gonzalez Arias C, Iyengar S, Wilson MR, Delaney A, Rubio L, Lambert J, Begg K, Boyle S, Cheok KPL, Collins GP, Roddie C, Johnson R, Sanderson R. Brexucabtagene autoleucel for relapsed or refractory mantle cell lymphoma in the United Kingdom: A real-world intention-to-treat analysis. Hemasphere 2024; 8:e87. [PMID: 38873532 PMCID: PMC11170269 DOI: 10.1002/hem3.87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/12/2024] [Accepted: 05/01/2024] [Indexed: 06/15/2024] Open
Abstract
Brexucabtagene autoleucel (brexu-cel) is an autologous CD19 CAR T-cell product, approved for relapsed/refractory (r/r) mantle cell lymphoma (MCL). In ZUMA-2, brexu-cel demonstrated impressive responses in patients failing ≥2 lines, including a bruton's tyrosine kinase inhibitor, with an overall and complete response rate of 93% and 67%, respectively. Here, we report our real-world intention-to-treat (ITT) outcomes for brexu-cel in consecutive, prospectively approved patients, from 12 institutions in the United Kingdom between February 2021 and June 2023, with a focus on feasibility, efficacy, and tolerability. Of 119 approved, 104 underwent leukapheresis and 83 received a brexu-cel infusion. Progressive disease (PD) and/or manufacturing (MF) were the most common reasons for failure to reach harvest and/or infusion. For infused patients, best overall and complete response rates were 87% and 81%, respectively. At a median follow-up of 13.3 months, median progression-free survival (PFS) for infused patients was 21 months (10.1-NA) with a 6- and 12-month PFS of 82% (95% confidence interval [CI], 71-89) and 62% (95% CI, 49-73), respectively. ≥Grade 3 cytokine release syndrome and neurotoxicity occurred in 12% and 22%, respectively. On multivariate analysis, inferior PFS was associated with male sex, bulky disease, ECOG PS > 1 and previous MF. Cumulative incidence of non-relapse mortality (NRM) was 6%, 15%, and 25% at 6, 12, and 24 months, respectively, and mostly attributable to infection. Outcomes for infused patients in the UK are comparable to ZUMA-2 and other real-world reports. However, ITT analysis highlights a significant dropout due to PD and/or MF. NRM events warrant further attention.
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Affiliation(s)
- Maeve A. O'Reilly
- University College London HospitalLondonUK
- University College London Cancer InstituteLondonUK
| | - William Wilson
- University College London and CRUK Cancer Trials CentreLondonUK
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Claire Roddie
- University College London HospitalLondonUK
- University College London Cancer InstituteLondonUK
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11
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Rejeski K, Jain MD, Shah NN, Perales MA, Subklewe M. Immune effector cell-associated haematotoxicity after CAR T-cell therapy: from mechanism to management. Lancet Haematol 2024; 11:e459-e470. [PMID: 38734026 DOI: 10.1016/s2352-3026(24)00077-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 02/28/2024] [Accepted: 03/06/2024] [Indexed: 05/13/2024]
Abstract
Genetically engineered chimeric antigen receptor (CAR) T cells have become an effective treatment option for several advanced B-cell malignancies. Haematological side-effects, classified in 2023 as immune effector cell-associated haematotoxicity (ICAHT), are very common and can predispose for clinically relevant infections. As haematopoietic reconstitution after CAR T-cell therapy differs from chemotherapy-associated myelosuppression, a novel classification system for early and late ICAHT has been introduced. Furthermore, a risk stratification score named CAR-HEMATOTOX has been developed to identify candidates at high risk of ICAHT, thereby enabling risk-based interventional strategies. Therapeutically, growth factor support with granulocyte colony-stimulating factor (G-CSF) is the mainstay of treatment, with haematopoietic stem cell (HSC) boosts available for patients who are refractory to G-CSF (if available). Although the underlying pathophysiology remains poorly understood, translational studies from the past 3 years suggest that CAR T-cell-induced inflammation and baseline haematopoietic function are key contributors to prolonged cytopenia. In this Review, we provide an overview of the spectrum of haematological toxicities after CAR T-cell therapy and offer perspectives on future translational and clinical developments.
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Affiliation(s)
- Kai Rejeski
- Adult BMT and Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Medicine III, LMU University Hospital, LMU Munich, Munich, Germany; Laboratory for Translational Cancer Immunology, LMU Gene Center, Munich, Germany.
| | - Michael D Jain
- Department of Blood and Marrow Transplant and Cellular Immunotherapy, Moffitt Cancer Center, Tampa, FL, USA
| | - Nirali N Shah
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Miguel-Angel Perales
- Adult BMT and Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Marion Subklewe
- Department of Medicine III, LMU University Hospital, LMU Munich, Munich, Germany; Laboratory for Translational Cancer Immunology, LMU Gene Center, Munich, Germany.
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12
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Ferreri CJ, Bhutani M. Mechanisms and management of CAR T toxicity. Front Oncol 2024; 14:1396490. [PMID: 38835382 PMCID: PMC11148294 DOI: 10.3389/fonc.2024.1396490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 05/07/2024] [Indexed: 06/06/2024] Open
Abstract
Chimeric antigen receptor (CAR) T cell therapies have dramatically improved treatment outcomes for patients with relapsed or refractory B-cell acute lymphoblastic leukemia, large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, and multiple myeloma. Despite unprecedented efficacy, treatment with CAR T cell therapies can cause a multitude of adverse effects which require monitoring and management at specialized centers and contribute to morbidity and non-relapse mortality. Such toxicities include cytokine release syndrome, immune effector cell-associated neurotoxicity syndrome, neurotoxicity distinct from ICANS, immune effector cell-associated hemophagocytic lymphohistiocytosis-like syndrome, and immune effector cell-associated hematotoxicity that can lead to prolonged cytopenias and infectious complications. This review will discuss the current understanding of the underlying pathophysiologic mechanisms and provide guidelines for the grading and management of such toxicities.
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Affiliation(s)
- Christopher J Ferreri
- Department of Hematologic Oncology and Blood Disorders, Levine Cancer Institute, Atrium Health Wake Forest University School of Medicine, Charlotte, NC, United States
| | - Manisha Bhutani
- Department of Hematologic Oncology and Blood Disorders, Levine Cancer Institute, Atrium Health Wake Forest University School of Medicine, Charlotte, NC, United States
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13
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Rejeski K, Wang Y, Hansen DK, Iacoboni G, Bachy E, Bansal R, Penack O, Müller F, Bethge W, Munoz J, Mohty R, Bücklein VL, Barba P, Locke FL, Lin Y, Jain MD, Subklewe M. Applying the EHA/EBMT grading for ICAHT after CAR-T: comparative incidence and association with infections and mortality. Blood Adv 2024; 8:1857-1868. [PMID: 38181508 PMCID: PMC11007437 DOI: 10.1182/bloodadvances.2023011767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/07/2024] Open
Abstract
ABSTRACT Cytopenias represent the most common side effect of CAR T-cell therapy (CAR-T) and can predispose for severe infectious complications. Current grading systems, such as the Common Terminology Criteria for Adverse Events (CTCAE), neither reflect the unique quality of post-CAR-T neutrophil recovery, nor do they reflect the inherent risk of infections due to protracted neutropenia. For this reason, a novel EHA/EBMT consensus grading was recently developed for Immune Effector Cell-Associated HematoToxicity (ICAHT). In this multicenter, observational study, we applied the grading system to a large real-world cohort of 549 patients treated with BCMA- or CD19-directed CAR-T for refractory B-cell malignancies (112 multiple myeloma [MM], 334 large B-cell lymphoma [LBCL], 103 mantle cell lymphoma [MCL]) and examined the clinical sequelae of severe (≥3°) ICAHT. The ICAHT grading was strongly associated with the cumulative duration of severe neutropenia (r = 0.92, P < .0001), the presence of multilineage cytopenias, and the use of platelet and red blood cell transfusions. We noted an increased rate of severe ICAHT in patients with MCL vs those with LBCL and MM (28% vs 23% vs 15%). Severe ICAHT was associated with a higher rate of severe infections (49% vs 13%, P < .0001), increased nonrelapse mortality (14% vs 4%, P < .0001), and inferior survival outcomes (1-year progression-free survival: 35% vs 51%, 1-year overall survival: 52% vs 73%, both P < .0001). Importantly, the ICAHT grading demonstrated superior capacity to predict severe infections compared with the CTCAE grading (c-index 0.73 vs 0.55, P < .0001 vs nonsignificant). Taken together, these data highlight the clinical relevance of the novel grading system and support the reporting of ICAHT severity in clinical trials evaluating CAR-T therapies.
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Affiliation(s)
- Kai Rejeski
- Department of Medicine III – Hematology/Oncology, University Hospital, LMU Munich, Munich, Germany
- Laboratory for Translational Cancer Immunology, LMU Gene Center, Munich, Germany
- German Cancer Consortium (DKTK), Munich and Berlin Sites, and German Cancer Research Center, Heidelberg, Germany
- Adult BMT and Cellular Therapy Service, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Yucai Wang
- Division of Hematology, Mayo Clinic, Rochester, MN
| | - Doris K. Hansen
- Department of Blood and Marrow Transplant and Cellular Immunotherapy, Moffitt Cancer Center, Tampa, FL
| | - Gloria Iacoboni
- Department of Hematology, Vall d’Hebron Institute of Oncology, University Hospital Vall d’Hebron and Autonomous University of Barcelona, Barcelona, Spain
| | - Emmanuel Bachy
- Department of Hematology, Lyon Sud Hospital, Claude Bernard University Lyon 1, INSERM 1052, Pierre-Bénite, France
| | | | - Olaf Penack
- German Cancer Consortium (DKTK), Munich and Berlin Sites, and German Cancer Research Center, Heidelberg, Germany
- Department of Hematology, Oncology and Tumorimmunology, Charité – Berlin University Medicine, Corporate Member of Free University of Berlin and Humboldt University, Berlin, Germany
| | - Fabian Müller
- Department of Internal Medicine 5, Hematology and Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Germany
| | - Wolfgang Bethge
- Department of Hematology, Oncology, Immunology and Rheumatology, University Hospital Tübingen, Tübingen, Germany
| | - Javier Munoz
- Division of Hematology and Oncology, Mayo Clinic, Phoenix, AZ
| | - Razan Mohty
- Department of Blood and Marrow Transplant and Cellular Immunotherapy, Moffitt Cancer Center, Tampa, FL
| | - Veit L. Bücklein
- Department of Medicine III – Hematology/Oncology, University Hospital, LMU Munich, Munich, Germany
- Laboratory for Translational Cancer Immunology, LMU Gene Center, Munich, Germany
| | - Pere Barba
- Department of Hematology, Vall d’Hebron Institute of Oncology, University Hospital Vall d’Hebron and Autonomous University of Barcelona, Barcelona, Spain
| | - Frederick L. Locke
- Department of Blood and Marrow Transplant and Cellular Immunotherapy, Moffitt Cancer Center, Tampa, FL
| | - Yi Lin
- Division of Hematology, Mayo Clinic, Rochester, MN
| | - Michael D. Jain
- Department of Blood and Marrow Transplant and Cellular Immunotherapy, Moffitt Cancer Center, Tampa, FL
| | - Marion Subklewe
- Department of Medicine III – Hematology/Oncology, University Hospital, LMU Munich, Munich, Germany
- Laboratory for Translational Cancer Immunology, LMU Gene Center, Munich, Germany
- German Cancer Consortium (DKTK), Munich and Berlin Sites, and German Cancer Research Center, Heidelberg, Germany
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14
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Sainatham C, Jain T. Picture Perfect Predictive Model: Does it Exist? Transplant Cell Ther 2024; 30:344-346. [PMID: 38604717 DOI: 10.1016/j.jtct.2024.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Affiliation(s)
| | - Tania Jain
- Division of Hematological Malignancies and Bone Marrow Transplantation, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland, USA.
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15
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Rejeski K, Subklewe M, Locke FL. Recognizing, defining, and managing CAR-T hematologic toxicities. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2023; 2023:198-208. [PMID: 38066881 PMCID: PMC10727074 DOI: 10.1182/hematology.2023000472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Autologous CAR-T cell therapy (CAR-T) has improved outcomes for patients with B-cell malignancies. It is associated with the well-described canonical toxicities cytokine release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS), which may be abrogated by corticosteroids and the anti-IL6 receptor antagonist tocilizumab. Practitioners and researchers should be aware of additional toxicities. Here we review current understanding and management of hematologic toxicities after CAR-T, including cytopenias, coagulopathies, bleeding and clotting events, hemophagocytic-lymphohistiocytosis, and tumor lysis syndrome. We pay particular attention to cytopenias, recently termed immune effector cell-associated hematological toxicity (ICAHT). While the "H" is silent, hematotoxicity is not: ICAHT has the highest cumulative incidence of all immune adverse events following CAR-T. Early cytopenia (day 0-30) is closely linked to lymphodepleting chemotherapy and CRS-related inflammatory stressors. Late ICAHT (after day 30) can present either with or without antecedent count recovery (e.g., "intermittent" vs "aplastic" phenotype), and requires careful evaluation and management strategies. Growth factor support is the mainstay of treatment, with recent evidence demonstrating safety and feasibility of early granulocyte colony-stimulating factor (G-CSF) (e.g., within week 1). In G-CSF refractory cases, autologous stem cell boosts represent a promising treatment avenue, if available. The CAR-HEMATOTOX scoring system, validated for use across lymphoid malignancies (B-NHL, multiple myeloma), enables pretherapeutic risk assessment and presents the potential for risk-adapted management. Recent expert panels have led to diagnostic scoring criteria, severity grading systems, and management strategies for both ICAHT and the recently termed immune effector cell-associated hemophagocytic lymphohistiocytosis-like syndrome (IEC-HS), now clarified and defined as a distinct entity from CRS.
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Affiliation(s)
- Kai Rejeski
- Department of Medicine III, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Marion Subklewe
- Department of Medicine III, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Frederick L Locke
- Department of Blood and Marrow Transplant and Cellular Immunotherapy, Moffitt Cancer Center, Tampa, FL
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