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Kurokawa M, Kurokawa R, Baba A, Gomi T, Cho S, Yoshioka K, Harada T, Kim J, Emile P, Abe O, Moritani T. Neuroimaging Features of Cytokine-related Diseases. Radiographics 2024; 44:e230069. [PMID: 38696321 DOI: 10.1148/rg.230069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2024]
Abstract
Cytokines are small secreted proteins that have specific effects on cellular interactions and are crucial for functioning of the immune system. Cytokines are involved in almost all diseases, but as microscopic chemical compounds they cannot be visualized at imaging for obvious reasons. Several imaging manifestations have been well recognized owing to the development of cytokine therapies such as those with bevacizumab (antibody against vascular endothelial growth factor) and chimeric antigen receptor (CAR) T cells and the establishment of new disease concepts such as interferonopathy and cytokine release syndrome. For example, immune effector cell-associated neurotoxicity is the second most common form of toxicity after CAR T-cell therapy toxicity, and imaging is recommended to evaluate the severity. The emergence of COVID-19, which causes a cytokine storm, has profoundly impacted neuroimaging. The central nervous system is one of the systems that is most susceptible to cytokine storms, which are induced by the positive feedback of inflammatory cytokines. Cytokine storms cause several neurologic complications, including acute infarction, acute leukoencephalopathy, and catastrophic hemorrhage, leading to devastating neurologic outcomes. Imaging can be used to detect these abnormalities and describe their severity, and it may help distinguish mimics such as metabolic encephalopathy and cerebrovascular disease. Familiarity with the neuroimaging abnormalities caused by cytokine storms is beneficial for diagnosing such diseases and subsequently planning and initiating early treatment strategies. The authors outline the neuroimaging features of cytokine-related diseases, focusing on cytokine storms, neuroinflammatory and neurodegenerative diseases, cytokine-related tumors, and cytokine-related therapies, and describe an approach to diagnosing cytokine-related disease processes and their differentials. ©RSNA, 2024 Supplemental material is available for this article.
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Affiliation(s)
- Mariko Kurokawa
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Ryo Kurokawa
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Akira Baba
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Taku Gomi
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Shinichi Cho
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Kyohei Yoshioka
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Taisuke Harada
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - John Kim
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Pinarbasi Emile
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Osamu Abe
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Toshio Moritani
- From the Department of Radiology, Division of Neuroradiology (M.K., R.K., A.B., T.G., S.C., K.Y., J.K., T.M.), and Department of Pathology (P.E.), University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109; Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (M.K., R.K., S.C., K.Y., O.A.); Department of Radiology, The Jikei University School of Medicine, Tokyo, Japan (A.B., T.G.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
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Leung ML, Woodhull W, Uggenti C, Schord S, Mato RP, Rodriguez DP, Ream M, Crow YJ, Mori M. Molecular characterization of an intronic RNASEH2B variant in a patient with Aicardi-Goutières syndrome. Eur J Med Genet 2023; 66:104731. [PMID: 36775013 DOI: 10.1016/j.ejmg.2023.104731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/12/2023] [Accepted: 02/10/2023] [Indexed: 02/12/2023]
Abstract
Aicardi-Goutières syndrome (AGS) is a progressive multisystem disorder including encephalopathy with significant impacts on intellectual and physical abilities. An early diagnosis is becoming ever more crucial, as targeted therapies are emerging. A deep understanding of the molecular heterogeneity of AGS can help guide the early diagnosis and clinical management of patients, and inform recurrence risks. Here, we detail the diagnostic odyssey of a patient with an early presentation of AGS. Exome and genome sequencing detected an intronic RNASEH2B variant missed in a conventional leukodystrophy NGS gene panel. RNA studies demonstrated that a c.322-17 A > G variant affected splicing and caused 16-nucleotide intronic retention in the RNASEH2B transcript, introducing an out-of-frame early termination codon. RNASEH2B expression in the patient's blood was reduced when compared to controls. Our study highlights the pathogenicity of this intronic variant and the importance of its inclusion in variant assessment.
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Affiliation(s)
- Marco L Leung
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, USA; Departments of Pathology, Departments of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA.
| | - Whitney Woodhull
- Division of Pediatric Neurology, Renown Children's Hospital, Reno, NV, USA; University of Nevada, Reno School of Medicine, Reno, NV, USA
| | - Carolina Uggenti
- MRC Human Genetics Unit, Institute of Genetics and Cancer, The University of Edinburgh, Edinburgh, UK
| | - Shauna Schord
- Division of Hospital Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Raul Perez Mato
- MRC Human Genetics Unit, Institute of Genetics and Cancer, The University of Edinburgh, Edinburgh, UK
| | - Diana P Rodriguez
- Department of Radiology, Nationwide Children's Hospital, Columbus, OH, USA; The Ohio State University College of Medicine, Columbus, OH, 43210, USA
| | - Margie Ream
- The Ohio State University College of Medicine, Columbus, OH, 43210, USA; Division of Pediatric Neurology, Nationwide Children's Hospital, Columbus, OH, USA
| | - Yanick J Crow
- MRC Human Genetics Unit, Institute of Genetics and Cancer, The University of Edinburgh, Edinburgh, UK; Laboratory of Neurogenetics and Neuroinflammation, Institut Imagine, Université de Paris, Paris, France
| | - Mari Mori
- The Ohio State University College of Medicine, Columbus, OH, 43210, USA; Division of Genetic and Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, USA.
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Amico G, Hemphill WO, Severino M, Moratti C, Pascarella R, Bertamino M, Napoli F, Volpi S, Rosamilia F, Signa S, Perrino F, Zedde M, Ceccherini I. Genotype-Phenotype Correlation and Functional Insights for Two Monoallelic TREX1 Missense Variants Affecting the Catalytic Core. Genes (Basel) 2022; 13:genes13071179. [PMID: 35885962 PMCID: PMC9323106 DOI: 10.3390/genes13071179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 02/01/2023] Open
Abstract
The TREX1 exonuclease degrades DNA to prevent aberrant nucleic-acid sensing through the cGAS-STING pathway, and dominant Aicardi–Goutières Syndrome type 1 (AGS1) represents one of numerous TREX1-related autoimmune diseases. Monoallelic TREX1 mutations were identified in patients showing early-onset cerebrovascular disease, ascribable to small vessel disease, and CADASIL-like neuroimaging. We report the clinical-neuroradiological features of two patients with AGS-like (Patient A) and CADASIL-like (Patient B) phenotypes carrying the heterozygous p.A136V and p.R174G TREX1 variants, respectively. Genetic findings, obtained by a customized panel including 183 genes associated with monogenic stroke, were combined with interferon signature testing and biochemical assays to determine the mutations’ effects in vitro. Our results for the p.A136V variant are inconsistent with prior biochemistry-pathology correlates for dominant AGS-causing TREX1 mutants. The p.R174G variant modestly altered exonuclease activity in a manner consistent with perturbation of substrate interaction rather than catalysis, which represents the first robust enzymological data for a TREX1 variant identified in a CADASIL-like patient. In conclusion, functional analysis allowed us to interpret the impact of TREX1 variants on patients’ phenotypes. While the p.A136V variant is unlikely to be causative for AGS in Patient A, Patient B’s phenotype is potentially related to the p.R174G variant. Therefore, further functional investigations of TREX1 variants found in CADASIL-like patients are warranted to determine any causal link and interrogate the molecular disease mechanism(s).
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Affiliation(s)
- Giulia Amico
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, 16132 Genoa, Italy;
- Laboratory of Genetics and Genomics of Rare Diseases, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy;
| | - Wayne O. Hemphill
- Center for Structural Biology, Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
- Department of Biochemistry, University of Colorado Boulder, Boulder, CO 80303, USA
- Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA
- Correspondence: (W.O.H.); (F.P.)
| | | | - Claudio Moratti
- Neuroradiology Unit, Azienda Unità Sanitaria Locale—IRCCS di Reggio Emilia, 42122 Reggio Emilia, Italy; (C.M.); (R.P.)
| | - Rosario Pascarella
- Neuroradiology Unit, Azienda Unità Sanitaria Locale—IRCCS di Reggio Emilia, 42122 Reggio Emilia, Italy; (C.M.); (R.P.)
| | - Marta Bertamino
- Physical Medicine and Rehabilitation Unit, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy;
| | - Flavia Napoli
- Departments of Pediatrics, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy;
| | - Stefano Volpi
- Autoinflammatory Diseases and Immunodeficiencies Center, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy; (S.V.); (S.S.)
| | - Francesca Rosamilia
- Biostatistic Unit, Health Science Department (DISSAL), University of Genoa, 16132 Genoa, Italy;
| | - Sara Signa
- Autoinflammatory Diseases and Immunodeficiencies Center, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy; (S.V.); (S.S.)
| | - Fred Perrino
- Center for Structural Biology, Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
- Correspondence: (W.O.H.); (F.P.)
| | - Marialuisa Zedde
- Neurology Unit, Stroke Unit, Azienda Unità Sanitaria Locale—IRCCS di Reggio Emilia, 42122 Reggio Emilia, Italy;
| | - Isabella Ceccherini
- Laboratory of Genetics and Genomics of Rare Diseases, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy;
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