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Kawata S, Kozawa J, Yoneda S, Fujita Y, Kashiwagi-Takayama R, Kimura T, Hosokawa Y, Baden MY, Uno S, Uenaka R, Namai K, Koh Y, Tomimaru Y, Hirata H, Uemura M, Nojima S, Morii E, Eguchi H, Imagawa A, Shimomura I. Inflammatory Cell Infiltration Into Islets Without PD-L1 Expression Is Associated With the Development of Immune Checkpoint Inhibitor-Related Type 1 Diabetes in Genetically Susceptible Patients. Diabetes 2023; 72:511-519. [PMID: 36657987 PMCID: PMC10033247 DOI: 10.2337/db22-0557] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 01/10/2023] [Indexed: 01/21/2023]
Abstract
Immune checkpoint inhibitors (ICIs) could cause type 1 diabetes (T1D). However, the underlying mechanism remains unclear. We immunohistochemically analyzed pancreatic specimens from three individuals with ICI-related T1D, and their histopathological data were compared those from three patients who had received ICI therapy but did not develop T1D (non-T1D) and seven normal glucose-tolerant subjects as control subjects. All ICI-related T1D patients had susceptible HLA haplotypes. In ICI-related T1D, the β-cell area decreased and the α-cell area increased compared with non-T1D and control subjects. The number of CD3-positive cells around islets increased in ICI-related T1D and non-T1D compared with control subjects, while the number of CD68-positive cells around islets increased in ICI-related T1D compared with non-T1D and control subjects. The expression ratios of programmed death-ligand 1 (PD-L1) on islets decreased in non-T1D and almost completely disappeared in ICI-related T1D, while PD-L1 expression was observed in most cells of pancreatic islets in control subjects. This study, therefore, indicates that ICI therapy itself could reduce PD-L1 expression on islets in all subjects, which may be related to β-cell vulnerability. In addition, we showed that absence of PD-L1 expression on β-cells, genetic susceptibility, and infiltration of macrophages as well as T lymphocytes around islets might be responsible for T1D onset.
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Affiliation(s)
- Satoshi Kawata
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Junji Kozawa
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
- Department of Diabetes Care Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
- Corresponding author: Junji Kozawa,
| | - Sho Yoneda
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
- Yoneda Clinic, Osaka, Japan
| | - Yukari Fujita
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
- Department of Community Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Risa Kashiwagi-Takayama
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Takekazu Kimura
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Yoshiya Hosokawa
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Megu Y. Baden
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
- Department of Lifestyle Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Sae Uno
- Division of Endocrinology and Metabolism, Otemae Hospital, Osaka, Japan
| | - Rikako Uenaka
- Division of Endocrinology and Metabolism, Otemae Hospital, Osaka, Japan
| | - Kazuyuki Namai
- Department of Diabetes & Endocrinology, Saitama Red Cross Hospital, Saitama, Japan
| | - Yoko Koh
- Department of Urology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Yoshito Tomimaru
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Haruhiko Hirata
- Department of Respiratory Medicine and Clinical Immunology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Motohide Uemura
- Department of Urology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Satoshi Nojima
- Department of Pathology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Eiichi Morii
- Department of Pathology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Hidetoshi Eguchi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Akihisa Imagawa
- Department of Internal Medicine (I), Faculty of Medicine, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
| | - Iichiro Shimomura
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
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Seligman C, Chang YM, Luo J, Garden OA. Exploring the role of immune checkpoint inhibitors in the etiology of myasthenia gravis and Lambert-Eaton myasthenic syndrome: A systematic review. Front Neurol 2023; 13:1004810. [PMID: 36698907 PMCID: PMC9868566 DOI: 10.3389/fneur.2022.1004810] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 12/12/2022] [Indexed: 01/11/2023] Open
Abstract
Background While immune checkpoint inhibitors (ICIs) have been revolutionary in the treatment of cancer, their administration has been associated with a variety of immune-related adverse events (irAEs), including myasthenia gravis (MG), and Lambert-Eaton myasthenic syndrome (LEMS). Objective To provide a comprehensive synthesis of the evidence supporting an etiological role for ICIs in MG and LEMS in patients with no prior history of autoimmune disease. Hypothesis ICIs may trigger MG and LEMS in patients with no prior susceptibility to autoimmune disease. Methods Relevant primary research on Medline was interrogated using a series of search algorithms. Search terms were constructed based on the PICOS tool endorsed by the Cochrane Collaboration, which describes population, intervention, comparison, outcomes, and study design. Papers were screened according to inclusion and exclusion criteria. Additional papers were retrieved from the reference lists of screened papers. Each paper included in the qualitative synthesis was assigned an integrated metric of evidence (IME) value, ranging from 0 to 7, based on study design, quality of data, likelihood of a causal link between the immune checkpoint inhibitor(s) and MG/LEMS, confidence of MG/LEMS diagnosis, and the number of patients treated with an ICI prior to MG/LEMS diagnosis. Results Ninety-four papers describing at least one patient treated with ICI(s) prior to the onset of MG and/or LEMS were documented. Overall evidence for a causal link between ICI administration and MG/LEMS was low, with a median IME value of 2.88 (range 2.05-6.61). Conclusions There is a paucity of evidence in support of an etiological relationship between ICIs and MG/LEMS, due largely to the lack of mechanistic studies and/or prospective clinical trials with relevant study endpoints. The current literature is dominated by case reports and retrospective cohort studies, which inherently yield only low-level evidence, supporting the need for further work in this area. A role of ICIs in the etiology of MG/LEMS remains plausible, arguing for continued vigilance for irAEs in patients treated with these drugs. We argue that there is a need for future mechanistic, high quality, large-scale studies specifically investigating the possible etiological role of ICIs in MG/LEMS.
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Affiliation(s)
- Carly Seligman
- Garden & Luo Immune Regulation Laboratory, Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Yu-Mei Chang
- Department of Comparative Biomedical Sciences, Royal Veterinary College, University of London, London, United Kingdom
| | - Jie Luo
- Garden & Luo Immune Regulation Laboratory, Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Oliver A. Garden
- Garden & Luo Immune Regulation Laboratory, Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States,Dean's Office, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, United States,*Correspondence: Oliver A. Garden ✉
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Hajihossainlou B, Vasileva A, Manthri S, Chakraborty K. Myasthenia gravis induced or exacerbated by immune checkpoint inhibitors: a rising concern. BMJ Case Rep 2021; 14:e243764. [PMID: 34426425 PMCID: PMC8383870 DOI: 10.1136/bcr-2021-243764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2021] [Indexed: 12/13/2022] Open
Abstract
Immune checkpoint inhibitors can cause immune side effects, with myasthenia gravis (MG) being relatively rare. With this review, we present 66-year-old man with melanoma treated with pembrolizumab who developed MG. With immuno-oncology (IO) single agent usage, 42 cases reported new-onset MG and 9 cases reported exacerbation of pre-existing MG. Among the patients who had new-onset MG after administration of programmed cell death protein 1 (PD-1) inhibitors, 14 patients (38.8%) developed severe respiratory failure and required intubation and 10 patients (27.02%) died. Among the patients with exacerbation of pre-existing MG after receiving PD-1 inhibitors, 1 patient (11.1%) required intubation, and no death was reported. Combination IO therapy-induced MG was reported in seven cases, with at least two cases complicated by respiratory failure and one death. Our observations suggest a possible difference in the severity of the disease and outcome among different IO therapy options.
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Affiliation(s)
| | | | - Sukesh Manthri
- Mary Bird Perkins TGMC Cancer Center, Houma, Louisiana, USA
| | - Kanishka Chakraborty
- Department of Internal Medicine, East Tennessee State University, Johnson City, Tennessee, USA
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