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Zhu WM, Middleton MR. Combination therapies for the optimisation of Bispecific T-cell Engagers in cancer treatment. Immunother Adv 2023; 3:ltad013. [PMID: 37599903 PMCID: PMC10439528 DOI: 10.1093/immadv/ltad013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/09/2023] [Indexed: 08/22/2023] Open
Abstract
Bispecific T-cell engagers (BiTEs) redirect endogenous T-cell populations to cells expressing tumour-associated antigens to induce tumour cell killing. This inherently relies upon a cytotoxic T-cell population that is able to be recruited. In many cancers, immune checkpoints and other immunosuppressive factors in the tumour microenvironment lead to a population of anergic T-cells which cannot be redirected to tumour killing and thus impede the efficacy of BiTE therapy. Furthermore, there is evidence that BiTE therapy itself can increase immune checkpoint expression, and this is thought to be a major escape mechanism for the BiTE therapy blinatumomab. To overcome these inadequate T-cell responses, BiTEs may be combined with checkpoint inhibitors, chemotherapy, costimulatory molecules or oncolytic viruses. Study of these combinations is needed to expand the use of BiTEs in solid malignancies. This review covers the rationale, preclinical evidence and any clinical trials for these combination therapies and a few other less-studied combinations.
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Affiliation(s)
- Winston M Zhu
- Oxford Medical School, University of Oxford, Oxford, UK
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Kumthekar PU, Avram MJ, Lassman AB, Lin NU, Lee E, Grimm SA, Schwartz M, Bell Burdett KL, Lukas RV, Dixit K, Perron I, Zhang H, Gradishar WJ, Pentsova EI, Jeyapalan S, Groves MD, Melisko M, Raizer JJ. A phase I/II study of intrathecal trastuzumab in human epidermal growth factor receptor 2-positive (HER2-positive) cancer with leptomeningeal metastases: Safety, efficacy, and cerebrospinal fluid pharmacokinetics. Neuro Oncol 2023; 25:557-565. [PMID: 35948282 PMCID: PMC10013631 DOI: 10.1093/neuonc/noac195] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Patients with human epidermal growth factor receptor 2-positive (HER2-positive) cancers have a high incidence of central nervous system (CNS) spread, but unfortunately systemic trastuzumab which targets the HER2 receptor has little CNS penetration. The purpose of this study was to determine the maximum-tolerated dose of intrathecal trastuzumab and its efficacy in patients with HER2-positive leptomeningeal disease (LMD). METHODS This multicenter study enrolled 34 LMD patients in a combined phase I/II study in treating patients with intrathecal trastuzumab. Any HER2-positive histology was allowed in the phase I; the phase II was limited to HER2-positive breast cancer. RESULTS Intrathecal trastuzumab was well-tolerated, with one dose limiting toxicity of grade 4 (arachnoiditis) occurring at the 80 mg twice weekly dose. The recommended phase II dose was 80 mg intrathecally twice weekly. Twenty-six patients at dose level 80 mg were included in evaluation for efficacy: partial response was seen in 5 (19.2%) patients, stable disease was observed in 13 (50.0%), and 8 (30.8%) of the patients had progressive disease. Median overall survival (OS) for phase II dose treated patients was 8.3 months (95% CI 5.2-19.6). The phase II HER2-positive breast cancer patients median OS was 10.5 months (95% CI 5.2-20.9). Pharmacokinetic (PK) studies were limited in the setting of concurrent systemic trastuzumab administration, however, did show stable cerebrospinal fluid (CSF) concentrations with repeated dosing suggest that trastuzumab does not accumulate in the CSF in toxic concentrations. CONCLUSION This study suggests promise for potentially improved outcomes of HER-positive LMD patients when treated with intrathecal trastuzumab while remaining safe and well-tolerated for patients.
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Affiliation(s)
- Priya U Kumthekar
- Department of Neurology at The Feinberg School of Medicine at Northwestern University and The Malnati Brain Tumor Institute at the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois, USA
| | - Michael J Avram
- Department of Anesthesiology, Emeritus Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Andrew B Lassman
- Division of Neuro-Oncology, Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, Herbert Irving Comprehensive Cancer Center, NewYork-Presbyterian Hospital, New York, New York, USA
| | - Nancy U Lin
- Department of Medical Oncology, Dana-Farber Cancer Institute Harvard Medical School, Boston, Massachusetts, USA
| | - Eudocia Lee
- Department of Medical Oncology, Dana-Farber Cancer Institute Harvard Medical School, Boston, Massachusetts, USA
| | - Sean A Grimm
- Department of Neurology, Rush University Medical Center, Chicago, Illinois, USA
| | - Margaret Schwartz
- Department of Neurology at The Feinberg School of Medicine at Northwestern University and The Malnati Brain Tumor Institute at the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois
| | - Kirsten L Bell Burdett
- Department of Preventive Medicine, Division of Biostatistics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Rimas V Lukas
- Department of Neurology at The Feinberg School of Medicine at Northwestern University and The Malnati Brain Tumor Institute at the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois, USA
| | - Karan Dixit
- Department of Neurology at The Feinberg School of Medicine at Northwestern University and The Malnati Brain Tumor Institute at the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois, USA
| | - Isabella Perron
- Department of Neurosurgery at The Feinberg School of Medicine at Northwestern University, Chicago, Illinois, USA
| | - Hui Zhang
- Department of Preventive Medicine, Division of Biostatistics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - William J Gradishar
- Department of Medicine at The Feinberg School of Medicine at Northwestern University at The Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois, USA
| | - Elena I Pentsova
- Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Suriya Jeyapalan
- Department of Neurology, Tufts Medical Center, Boston, Massachusetts, USA
| | - Morris D Groves
- Texas Oncology-Austin Brain Tumor Center, Austin, Texas, USA
| | - Michelle Melisko
- Department of Medicine at the University of California San Francisco, San Francisco, California, USA
| | - Jeffrey J Raizer
- Department of Neurology at The Feinberg School of Medicine at Northwestern University and The Malnati Brain Tumor Institute at the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois, USA
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