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Holiday KA, Sheppard A, Khattab YI, Chavez D, Melrose RJ, Mendez MF. Socioemotional Dysfunction From Temporal Lobe Involvement in Frontotemporal Dementia: A Preliminary Report. J Neuropsychiatry Clin Neurosci 2024:appineuropsych20230175. [PMID: 38988189 DOI: 10.1176/appi.neuropsych.20230175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
OBJECTIVE Socioemotional changes, rather than cognitive impairments, are the feature that defines behavioral variant frontotemporal dementia (bvFTD). Investigators have attributed the socioemotional changes in bvFTD and other dementias to frontal lobe dysfunction; however, recent work implies a further contribution from right anterior temporal disease. The authors evaluated relationships between regional brain atrophy and socioemotional changes in both bvFTD and early-onset Alzheimer's disease (EOAD). METHODS This study explored the neuroanatomical correlations of performance on the Socioemotional Dysfunction Scale (SDS), an instrument previously shown to document socioemotional changes in bvFTD, among 13 patients with bvFTD not preselected for anterior temporal involvement and 16 age-matched patients with early-onset Alzheimer's disease (EOAD). SDS scores were correlated with volumes of regions of interest assessed with tensor-based morphometric analysis of MRI images. RESULTS As expected, the bvFTD group had significantly higher SDS scores overall and smaller frontal regions compared with the EOAD group, which in turn had smaller volumes in temporoparietal regions. SDS scores significantly correlated with lateral anterior temporal lobe (ATL) atrophy, and a regression analysis that controlled for diagnosis indicated that SDS scores predicted lateral ATL volume. Within the bvFTD group, higher SDS scores were associated with smaller lateral and right ATL regions, as well as a smaller orbitofrontal cortex. Within the EOAD group, higher SDS scores were associated with a smaller right parietal cortex. CONCLUSIONS This study confirms that, in addition to orbitofrontal disease, there is a prominent right and lateral ATL origin of socioemotional changes in bvFTD and further suggests that right parietal involvement contributes to socioemotional changes in EOAD.
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Affiliation(s)
- Kelsey A Holiday
- Veterans Administration Greater Los Angeles Healthcare System, Los Angeles (Holiday, Khattab, Chavez, Melrose, Mendez); Department of Neurology, University of California, Los Angeles (UCLA) (Holiday, Sheppard, Khattab, Chavez, Mendez); Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA (Melrose, Mendez)
| | - Alexander Sheppard
- Veterans Administration Greater Los Angeles Healthcare System, Los Angeles (Holiday, Khattab, Chavez, Melrose, Mendez); Department of Neurology, University of California, Los Angeles (UCLA) (Holiday, Sheppard, Khattab, Chavez, Mendez); Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA (Melrose, Mendez)
| | - Youssef I Khattab
- Veterans Administration Greater Los Angeles Healthcare System, Los Angeles (Holiday, Khattab, Chavez, Melrose, Mendez); Department of Neurology, University of California, Los Angeles (UCLA) (Holiday, Sheppard, Khattab, Chavez, Mendez); Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA (Melrose, Mendez)
| | - Diana Chavez
- Veterans Administration Greater Los Angeles Healthcare System, Los Angeles (Holiday, Khattab, Chavez, Melrose, Mendez); Department of Neurology, University of California, Los Angeles (UCLA) (Holiday, Sheppard, Khattab, Chavez, Mendez); Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA (Melrose, Mendez)
| | - Rebecca J Melrose
- Veterans Administration Greater Los Angeles Healthcare System, Los Angeles (Holiday, Khattab, Chavez, Melrose, Mendez); Department of Neurology, University of California, Los Angeles (UCLA) (Holiday, Sheppard, Khattab, Chavez, Mendez); Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA (Melrose, Mendez)
| | - Mario F Mendez
- Veterans Administration Greater Los Angeles Healthcare System, Los Angeles (Holiday, Khattab, Chavez, Melrose, Mendez); Department of Neurology, University of California, Los Angeles (UCLA) (Holiday, Sheppard, Khattab, Chavez, Mendez); Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA (Melrose, Mendez)
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2
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Pressman PS, Carter DJ, Ramos EM, Molden J, Smith K, Dino F, McMillan C, Irwin D, Rascovsky K, Ghoshal N, Knudtson M, Rademakers R, Geschwind D, Gendron T, Petrucelli L, Heuer H, Boeve BF, Barmada S, Boxer A, Tempini MLG, Rosen HJ. Symptomatic progression of frontotemporal dementia with the TARDBP I383V variant. Neurocase 2024; 30:39-47. [PMID: 38757415 DOI: 10.1080/13554794.2024.2354540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 05/02/2024] [Indexed: 05/18/2024]
Abstract
We present a longitudinal description of a man with the TARDBP I383V variant of frontotemporal dementia (FTD). His progressive changes in behavior and language resulted in a diagnosis of the right temporal variant of FTD, also called the semantic behavioral variant (sbvFTD). We also present data from a small series of patients with the TARDBP I383V variant who were enrolled in a nationwide FTD research collaboration (ALLFTD). These data support slowly progressive loss of semantic function. While semantic dementia is infrequently considered genetic, the TARDBP I383V variant seems to be an exception. Longitudinal analyses in larger samples are warranted.
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Affiliation(s)
- Peter S Pressman
- Alzheimer and Cognition Center, University of Colorado, Aurora, CO, US
| | - Danelle J Carter
- Alzheimer and Cognition Center, University of Colorado, Aurora, CO, US
| | - Eliana Marisa Ramos
- Department of Neurology, Anschutz Medical Campus, School of Medicine, University of California, Los Angeles, CA, US
| | - Joie Molden
- Department of Neurosurgery, University of Colorado, Boulder, CO, US
| | - Kaitlin Smith
- Alzheimer and Cognition Center, University of Colorado, Aurora, CO, US
| | - Francesca Dino
- Alzheimer and Cognition Center, University of Colorado, Aurora, CO, US
| | - Corey McMillan
- Penn Frontotemporal Degeneration Center, University of Pennsylvania, Philadelphia, PA, US
| | - David Irwin
- Penn Frontotemporal Degeneration Center, University of Pennsylvania, Philadelphia, PA, US
| | - Katya Rascovsky
- Penn Frontotemporal Degeneration Center, University of Pennsylvania, Philadelphia, PA, US
| | - Nupur Ghoshal
- Departments of Neurology and Psychiatry, Knight Alzheimer Disease Research Center, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Rosa Rademakers
- NeuroGenomics and Informatics Center, Washington University School of Medicine, St. Louis, MO, USA
- Department of Neuroscience, Mayo Clinic Jacksonville, Jacksonville, FL, US
| | - Daniel Geschwind
- Division of Behavioral Neurology, Mayo Clinic College Rochester, Rochester, MN, USA
| | - Tania Gendron
- Department of Neuroscience, Mayo Clinic Jacksonville, Jacksonville, FL, US
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic Jacksonville, Jacksonville, FL, US
| | - Hilary Heuer
- Memory and Aging Center, University of California, San Francisco, CA, USA
| | - Bradley F Boeve
- Department of Neuroscience, Mayo Clinic Jacksonville, Jacksonville, FL, US
| | - Sami Barmada
- Division of Behavioral Neurology, Mayo Clinic College Rochester, Rochester, MN, USA
- Department of Neurology, University of Michigan, Ann Arbor, MI, USA
| | - Adam Boxer
- Memory and Aging Center, University of California, San Francisco, CA, USA
| | | | - Howard J Rosen
- Memory and Aging Center, University of California, San Francisco, CA, USA
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3
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Belder CRS, Marshall CR, Jiang J, Mazzeo S, Chokesuwattanaskul A, Rohrer JD, Volkmer A, Hardy CJD, Warren JD. Primary progressive aphasia: six questions in search of an answer. J Neurol 2024; 271:1028-1046. [PMID: 37906327 PMCID: PMC10827918 DOI: 10.1007/s00415-023-12030-4] [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: 09/16/2023] [Accepted: 09/27/2023] [Indexed: 11/02/2023]
Abstract
Here, we review recent progress in the diagnosis and management of primary progressive aphasia-the language-led dementias. We pose six key unanswered questions that challenge current assumptions and highlight the unresolved difficulties that surround these diseases. How many syndromes of primary progressive aphasia are there-and is syndromic diagnosis even useful? Are these truly 'language-led' dementias? How can we diagnose (and track) primary progressive aphasia better? Can brain pathology be predicted in these diseases? What is their core pathophysiology? In addition, how can primary progressive aphasia best be treated? We propose that pathophysiological mechanisms linking proteinopathies to phenotypes may help resolve the clinical complexity of primary progressive aphasia, and may suggest novel diagnostic tools and markers and guide the deployment of effective therapies.
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Affiliation(s)
- Christopher R S Belder
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, 8 - 11 Queen Square, London, WC1N 3BG, UK
- UK Dementia Research Institute at UCL, UCL Queen Square Institute of Neurology, University College London, London, UK
- Adelaide Medical School, The University of Adelaide, Adelaide, South Australia, Australia
| | - Charles R Marshall
- Preventive Neurology Unit, Wolfson Institute of Population Health, Queen Mary University of London, London, UK
| | - Jessica Jiang
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, 8 - 11 Queen Square, London, WC1N 3BG, UK
| | - Salvatore Mazzeo
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, 8 - 11 Queen Square, London, WC1N 3BG, UK
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Azienda Ospedaliera-Universitaria Careggi, Florence, Italy
| | - Anthipa Chokesuwattanaskul
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, 8 - 11 Queen Square, London, WC1N 3BG, UK
- Division of Neurology, Department of Internal Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
- Cognitive Clinical and Computational Neuroscience Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Jonathan D Rohrer
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, 8 - 11 Queen Square, London, WC1N 3BG, UK
| | - Anna Volkmer
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, 8 - 11 Queen Square, London, WC1N 3BG, UK
| | - Chris J D Hardy
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, 8 - 11 Queen Square, London, WC1N 3BG, UK
| | - Jason D Warren
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, 8 - 11 Queen Square, London, WC1N 3BG, UK.
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4
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Mori K, Shigenobu K, Beck G, Uozumi R, Satake Y, Suzuki M, Kondo S, Gotoh S, Yonenobu Y, Kawai M, Suzuki Y, Saito Y, Morii E, Hasegawa M, Mochizuki H, Murayama S, Ikeda M. A heterozygous splicing variant IVS9-7A > T in intron 9 of the MAPT gene in a patient with right-temporal variant frontotemporal dementia with atypical 4 repeat tauopathy. Acta Neuropathol Commun 2023; 11:130. [PMID: 37563653 PMCID: PMC10413539 DOI: 10.1186/s40478-023-01629-3] [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: 06/14/2023] [Accepted: 07/31/2023] [Indexed: 08/12/2023] Open
Abstract
Right temporal variant frontotemporal dementia, also called right-predominant semantic dementia, often has an unclear position within the framework of the updated diagnostic criteria for behavioral variant frontotemporal dementia or primary progressive aphasia. Recent studies have suggested that this population may be clinically, neuropathologically, and genetically distinct from those with behavioral variant frontotemporal dementia or left-predominant typical semantic variant primary progressive aphasia. Here we describe a Japanese case of right temporal variant frontotemporal dementia with novel heterozygous MAPT mutation Adenine to Thymidine in intervening sequence (IVS) 9 at position -7 from 3' splicing site of intron 9/exon 10 boundary (MAPT IVS9-7A > T). Postmortem neuropathological analysis revealed a predominant accumulation of 4 repeat tau, especially in the temporal lobe, amygdala, and substantia nigra, but lacked astrocytic plaques or tufted astrocytes. Immunoelectron microscopy of the tau filaments extracted from the brain revealed a ribbon-like structure. Moreover, a cellular MAPT splicing assay confirmed that this novel variant promoted the inclusion of exon 10, resulting in the predominant production of 4 repeat tau. These data strongly suggest that the MAPT IVS9-7 A > T variant found in our case is a novel mutation that stimulates the inclusion of exon 10 through alternative splicing of MAPT transcript and causes predominant 4 repeat tauopathy which clinically presents as right temporal variant frontotemporal dementia.
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Affiliation(s)
- Kohji Mori
- Department of Psychiatry, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, Japan.
| | - Kazue Shigenobu
- Department of Psychiatry, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, Japan
- Department of Psychiatry, Asakayama General Hospital, Sakai, Japan
- Department of Behavioral Neurology and Neuropsychiatry, United Graduate School of Child Development, Osaka University, Suita, Japan
| | - Goichi Beck
- Department of Neurology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Ryota Uozumi
- Department of Psychiatry, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, Japan
| | - Yuto Satake
- Department of Psychiatry, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, Japan
| | - Maki Suzuki
- Department of Behavioral Neurology and Neuropsychiatry, United Graduate School of Child Development, Osaka University, Suita, Japan
| | - Shizuko Kondo
- Department of Psychiatry, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, Japan
| | - Shiho Gotoh
- Department of Psychiatry, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, Japan
| | - Yuki Yonenobu
- Department of Neurology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Makiko Kawai
- Department of Pathology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Yuki Suzuki
- Department of Psychiatry, Kansai Rosai Hospital, Amagasaki, Japan
| | - Yuko Saito
- Brain Bank for Aging Research (Neuropathology), Tokyo Metropolitan Institute of Geriatrics and Gerontology, Tokyo, Japan
| | - Eiichi Morii
- Department of Pathology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Masato Hasegawa
- Dementia Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Hideki Mochizuki
- Department of Neurology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Shigeo Murayama
- Department of Neurology, Graduate School of Medicine, Osaka University, Suita, Japan
- Brain Bank for Aging Research (Neuropathology), Tokyo Metropolitan Institute of Geriatrics and Gerontology, Tokyo, Japan
- Brain Bank for Neurodevelopmental, Neurological and Psychiatric Disorders, Molecular Research Center for Children's Mental Development, United Graduate School of Child Development, Osaka University, Suita, Japan
| | - Manabu Ikeda
- Department of Psychiatry, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka, Japan.
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5
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Rossi G, Salvi E, Mehmeti E, Ricci M, Villa C, Prioni S, Moda F, Di Fede G, Tiraboschi P, Redaelli V, Coppola C, Koch G, Canu E, Filippi M, Agosta F, Giaccone G, Caroppo P. Semantic and right temporal variant of FTD: Next generation sequencing genetic analysis on a single-center cohort. Front Aging Neurosci 2022; 14:1085406. [PMID: 36570531 PMCID: PMC9773257 DOI: 10.3389/fnagi.2022.1085406] [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: 10/31/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022] Open
Abstract
Semantic and right temporal variant of frontotemporal dementia (svFTD and rtvFTD) are rare clinical phenotypes in which, in most cases, the underlying pathology is TDP-43 proteinopathy. They are usually sporadic disorders, but recent evidences suggest a higher frequency of genetic mutations for the right temporal versus the semantic variant. However, the genetic basis of these forms is not clear. In this study we performed a genetic screening of a single-center cohort of svFTD and rtvFTD patients, aiming at identifying the associated genetic variants. A panel of 73 dementia candidate genes has been analyzed by NGS target sequencing including both causal and risk/modifier genes in 23 patients (15 svFTD and 8 rtvFTD) and 73 healthy age-matched controls. We first performed a single variant analysis considering rare variants and then a gene-based aggregation analysis to evaluate the cumulative effects of multiple rare variants in a single gene. We found 12 variants in nearly 40% of patients (9/23), described as pathogenic or classified as VUS/likely pathogenic. The overall rate was higher in svFTD than in rtvFTD. Three mutations were located in MAPT gene and single mutations in the following genes: SQSTM1, VCP, PSEN1, TBK1, OPTN, CHCHD10, PRKN, DCTN1. Our study revealed the presence of variants in genes involved in pathways relevant for the pathology, especially autophagy and inflammation. We suggest that molecular analysis should be performed in all svFTD and rtvFTD patients, to better understand the genotype-phenotype correlation and the pathogenetic mechanisms that could drive the clinical phenotypes in FTD.
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Affiliation(s)
- Giacomina Rossi
- Neurology V and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy,*Correspondence: Giacomina Rossi,
| | - Erika Salvi
- Neuroalgology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Elkadia Mehmeti
- Neuroalgology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Martina Ricci
- Neurology V and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Cristina Villa
- Neurology V and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Sara Prioni
- Clinical Neuropsychology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Fabio Moda
- Neurology V and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Giuseppe Di Fede
- Neurology V and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Pietro Tiraboschi
- Neurology V and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Veronica Redaelli
- Neurology V and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Cinzia Coppola
- Department of Advanced Medical and Surgical Sciences, University of Campania “L. Vanvitelli”, Naples, Italy
| | - Giacomo Koch
- Non Invasive Brain Stimulation Unit/Department of Behavioral and Clinical Neurology, Santa Lucia Foundation IRCCS, Rome, Italy
| | - Elisa Canu
- Neuroimaging Research Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Massimo Filippi
- Neuroimaging Research Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy,Neurology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy,Vita-Salute San Raffaele University, Milan, Italy,Unit of Neurorehabilitation, IRCCS San Raffaele Scientific Institute, Milan, Italy,Neurophysiology Service, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Federica Agosta
- Neuroimaging Research Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy,Neurology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy,Vita-Salute San Raffaele University, Milan, Italy
| | - Giorgio Giaccone
- Neurology V and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Paola Caroppo
- Neurology V and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
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6
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Campos DF, Rocca AR, Caixeta LF. Right Temporal Lobe Variant of Frontotemporal Dementia: Systematic Review. Alzheimer Dis Assoc Disord 2022; 36:272-279. [PMID: 35867973 DOI: 10.1097/wad.0000000000000511] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 04/30/2022] [Indexed: 11/25/2022]
Abstract
Frontotemporal dementia corresponds to a heterogenous group of syndromes characterized by progressive changes in behavior and/or language. Approximately 30% of patients with primary progressive aphasia, semantic variant (semantic dementia), present with atrophy in the right cerebral hemisphere, in a rare clinical condition called right temporal variant of frontotemporal dementia (rtvFTD). The objective of the study is to present the main demographic, clinical, neuropsychological, neuroimaging, and pathologic characteristics of rtvFTD patients. A systematic review of the literature was carried out in the PubMed, LILACS, and SCIELO databases between January and March 2022. After the evaluation process, 41 articles were selected, published between 1993 and 2021. We found that rtvFTD presents with severe and progressive prosopagnosia (related to anterior temporal lobe injury) associated with behavioral symptoms-desinibition (51%), apathy (39%), obsessive-compulsive symptoms (37%), changes in eating habits (33%), and depression (28%), which is different from semantic dementia. The most common pathologic pattern is TDP-43, type C. This field of knowledge has few studies (mainly reports and case series) and heterogenous nomenclature, which is a limitation. A multinational longitudinal registry of people with rtvFTD, with standardized assessment and description of symptoms, is necessary to elucidate the characteristics of this entity.
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Affiliation(s)
- Danilo F Campos
- Center for Cognitive Neurology and Neuropsychiatry, Federal University of Goiás
| | - Andrey R Rocca
- Center for Cognitive Neurology and Neuropsychiatry, Federal University of Goiás
| | - Leonardo F Caixeta
- Center for Cognitive Neurology and Neuropsychiatry, Federal University of Goiás
- Department of Neurology, Federal University of Goiás School of Medicine, Goiânia, Goiás, Brazil
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7
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Boeve BF, Boxer AL, Kumfor F, Pijnenburg Y, Rohrer JD. Advances and controversies in frontotemporal dementia: diagnosis, biomarkers, and therapeutic considerations. Lancet Neurol 2022; 21:258-272. [DOI: 10.1016/s1474-4422(21)00341-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 08/16/2021] [Accepted: 09/28/2021] [Indexed: 12/13/2022]
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8
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Belder CRS, Chokesuwattanaskul A, Marshall CR, Hardy CJD, Rohrer JD, Warren JD. The problematic syndrome of right temporal lobe atrophy: Unweaving the phenotypic rainbow. Front Neurol 2022; 13:1082828. [PMID: 36698890 PMCID: PMC9868162 DOI: 10.3389/fneur.2022.1082828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/14/2022] [Indexed: 01/10/2023] Open
Affiliation(s)
- Christopher R S Belder
- Department of Neurology, National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom.,Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
| | - Anthipa Chokesuwattanaskul
- Division of Neurology, Department of Internal Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand.,Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Charles R Marshall
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom.,Preventive Neurology Unit, Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom
| | - Chris J D Hardy
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Jonathan D Rohrer
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Jason D Warren
- Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
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9
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Gaweda-Walerych K, Sitek EJ, Borczyk M, Berdyński M, Narożańska E, Brockhuis B, Korostyński M, Sławek J, Zekanowski C. Two Rare Variants in PLAU and BACE1 Genes-Do They Contribute to Semantic Dementia Clinical Phenotype? Genes (Basel) 2021; 12:genes12111806. [PMID: 34828412 PMCID: PMC8624613 DOI: 10.3390/genes12111806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/14/2021] [Accepted: 11/16/2021] [Indexed: 11/16/2022] Open
Abstract
We have performed whole-genome sequencing to identify the genetic variants potentially contributing to the early-onset semantic dementia phenotype in a patient with family history of dementia and episodic memory deficit accompanied with profound semantic loss. Only very rare variants of unknown significance (VUS) have been identified: a nonsense variant c.366C>A/p.Cys122* in plasminogen activator, urokinase (PLAU) and a missense variant c.944C>T/p.Thr315Met in β-site APP-cleaving enzyme 1 (BACE1)-along with known disease-modifying variants of moderate penetrance. Patient-derived fibroblasts showed reduced PLAU and elevated BACE1 mRNA and protein levels compared to control fibroblasts. Successful rescue of PLAU mRNA levels by nonsense-mediated mRNA decay (NMD) inhibitor (puromycin) confirmed NMD as the underlying mechanism. This is the first report of the PLAU variant with the confirmed haploinsufficiency, associated with semantic dementia phenotype. Our results suggest that rare variants in the PLAU and BACE1 genes should be considered in future studies on early-onset dementias.
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Affiliation(s)
- Katarzyna Gaweda-Walerych
- Laboratory of Neurogenetics, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland; (M.B.); (C.Z.)
- Correspondence: (K.G.-W.); (E.J.S.)
| | - Emilia J. Sitek
- Neurology Department, St. Adalbert Hospital, Copernicus PL, 80-462 Gdansk, Poland; (E.N.); (J.S.)
- Division of Neurological and Psychiatric Nursing, Faculty of Health Sciences, Medical University of Gdansk, 80-462 Gdansk, Poland
- Correspondence: (K.G.-W.); (E.J.S.)
| | - Małgorzata Borczyk
- Laboratory of Pharmacogenomics, Department of Molecular Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 31-343 Krakow, Poland; (M.B.); (M.K.)
| | - Mariusz Berdyński
- Laboratory of Neurogenetics, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland; (M.B.); (C.Z.)
| | - Ewa Narożańska
- Neurology Department, St. Adalbert Hospital, Copernicus PL, 80-462 Gdansk, Poland; (E.N.); (J.S.)
| | - Bogna Brockhuis
- Division of Nuclear Medicine, Faculty of Health Sciences, Medical University of Gdansk, 80-214 Gdansk, Poland;
| | - Michał Korostyński
- Laboratory of Pharmacogenomics, Department of Molecular Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 31-343 Krakow, Poland; (M.B.); (M.K.)
| | - Jarosław Sławek
- Neurology Department, St. Adalbert Hospital, Copernicus PL, 80-462 Gdansk, Poland; (E.N.); (J.S.)
- Division of Neurological and Psychiatric Nursing, Faculty of Health Sciences, Medical University of Gdansk, 80-462 Gdansk, Poland
| | - Cezary Zekanowski
- Laboratory of Neurogenetics, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland; (M.B.); (C.Z.)
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10
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Sato S, Hashimoto M, Yoshiyama K, Kanemoto H, Hotta M, Azuma S, Suehiro T, Kakeda K, Nakatani Y, Umeda S, Fukuhara R, Takebayashi M, Ikeda M. Characteristics of behavioral symptoms in right-sided predominant semantic dementia and their impact on caregiver burden: a cross-sectional study. ALZHEIMERS RESEARCH & THERAPY 2021; 13:166. [PMID: 34627361 PMCID: PMC8502362 DOI: 10.1186/s13195-021-00908-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 09/28/2021] [Indexed: 01/01/2023]
Abstract
Background This study aimed to clarify the neuropsychiatric symptoms of right-sided predominant semantic dementia (SD-R) by comparing them with those of behavioral variant frontotemporal dementia (bvFTD), left-sided predominant SD (SD-L), and Alzheimer’s disease (AD). This study also aimed to identify clinical factors related to caregiver burden for bvFTD, SD-R, and SD-L. Methods The neuropsychiatric symptoms of 28 patients with bvFTD, 14 patients with SD-R, 24 patients with SD-L, and 43 patients with AD were evaluated using the Neuropsychiatric Inventory (NPI) and the Stereotypy Rating Inventory (SRI). Cognitive function was assessed using the Mini-Mental State Examination (MMSE). Dementia severity was assessed using the Clinical Dementia Rating. Activities of daily living were assessed using the Lawton Instrument Activities of Daily Living (IADL) scale and the Physical Self-Maintenance Scale. We compared the NPI and SRI scores among the four groups using the Kruskal-Wallis test. In addition, clinical factors related to caregiver burden, represented by the Japanese version of the Zarit Burden Interview (J-ZBI), were analyzed using multiple regression analysis in the bvFTD, SD-R, and SD-L groups. Results The NPI total score and the NPI subscale scores of apathy and disinhibition were significantly higher in the bvFTD group than in the SD-L and AD groups. The SD-R group scores were closer to those of the bvFTD group than the SD-L group. The SRI total score and SRI subscale scores for eating and cooking and speaking were significantly higher in the bvFTD, SD-R, and SD-L groups than in the AD group. The NPI total score was significantly associated with the J-ZBI score in the bvFTD group. The NPI total score and Lawton IADL scale score were independently associated with the J-ZBI score in the SD-R group. Furthermore, the NPI total score and MMSE score were independently associated with the J-ZBI score in the SD-L group. Conclusions SD-R seemed to be a similar condition to bvFTD rather than SD-L regarding behavioral symptoms. Our results suggest that each frontotemporal dementia subgroup requires different approaches to reduce the caregiver burden.
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Affiliation(s)
- Shunsuke Sato
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan. .,Department of Psychiatry, Osaka General Medical Center, Osaka, Japan.
| | - Mamoru Hashimoto
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan
| | - Kenji Yoshiyama
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan
| | - Hideki Kanemoto
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan
| | - Maki Hotta
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan.,Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Shingo Azuma
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan.,Department of Psychiatry, Mizuma Hospital, Kaizuka, Japan
| | - Takashi Suehiro
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan
| | - Kyosuke Kakeda
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan
| | - Yoshitaka Nakatani
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan.,Department of Psychiatry, Osaka Psychiatric Medical Center, Osaka, Japan
| | - Sumiyo Umeda
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan.,Department of Psychiatry, Daini Osaka Police Hospital, Osaka, Japan
| | - Ryuji Fukuhara
- Department of Neuropsychiatry, Kumamoto University Hospital, Kumamoto, Japan
| | - Minoru Takebayashi
- Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan.,Department of Neuropsychiatry, Kumamoto University Hospital, Kumamoto, Japan
| | - Manabu Ikeda
- Department of Psychiatry, Osaka University Graduate School of Medicine, D3, 2-2 Yamadaoka,, Suita City,, Osaka, 565-0871, Japan
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11
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Funayama M, Nakajima A, Kurose S, Takata T. Putative Alcohol-Related Dementia as an Early Manifestation of Right Temporal Variant of Frontotemporal Dementia. J Alzheimers Dis 2021; 83:531-537. [PMID: 34334406 DOI: 10.3233/jad-210501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Diagnosis of frontotemporal dementia is challenging in the early stages. Various psychiatric and neurological diseases are misdiagnosed as frontotemporal dementia and vice versa. Here we present a case with right temporal variant of frontotemporal dementia who presented with alcohol dependency and remarkable behavioral symptoms and was first misdiagnosed as having alcohol-related dementia. He then revealed symptoms related to right temporal variant of frontotemporal dementia, such as prosopagnosia, difficulty recognizing his housemates, loss of empathy, ritualistic behaviors, and difficulty finding and comprehending words. Retrospectively, his alcohol dependency itself was considered an early manifestation of right temporal variant of frontotemporal dementia.
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Affiliation(s)
- Michitaka Funayama
- Department of Neuropsychiatry, Ashikaga Red Cross Hospital, Ashikaga-City, Tochigi, Japan
| | - Asuka Nakajima
- Department of Rehabilitation, Ashikaga Red Cross Hospital, Tochigi, Japan
| | - Shin Kurose
- Department of Neuropsychiatry, Ashikaga Red Cross Hospital, Ashikaga-City, Tochigi, Japan
| | - Taketo Takata
- Department of Neuropsychiatry, Ashikaga Red Cross Hospital, Ashikaga-City, Tochigi, Japan
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12
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Ulugut H, Dijkstra AA, Scarioni M, Barkhof F, Scheltens P, Rozemuller AJM, Pijnenburg YAL. Right temporal variant frontotemporal dementia is pathologically heterogeneous: a case-series and a systematic review. Acta Neuropathol Commun 2021; 9:131. [PMID: 34344452 PMCID: PMC8330072 DOI: 10.1186/s40478-021-01229-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 07/12/2021] [Indexed: 12/11/2022] Open
Abstract
Although the right temporal variant frontotemporal dementia (rtvFTD) is characterised by distinct clinical and radiological features, its underlying histopathology remains elusive. Being considered a right-sided variant of semantic variant primary progressive aphasia (svPPA), TDP-43 type C pathology has been linked to the syndrome, but this has not been studied in detail in large cohorts. In this case report and systematic review, we report the autopsy results of five subjects diagnosed with rtvFTD from our cohort and 44 single rtvFTD subjects from the literature. Macroscopic pathological evaluation of the combined results revealed that rtvFTD demonstrated either a frontotemporal or temporal evolution, even if the degeneration started in the right temporal lobe initially. FTLD-TDP type C was the most common underlying pathology in rtvFTD, however, in 64% of rtvFTD, other underlying pathologies than FTLD-TDP type C were present, such as Tau-MAPT and FTLD-TDP type A and B. Additionally, accompanying motor neuron or corticospinal tract degeneration was observed in 28% of rtvFTD patients. Our results show that in contrast to the general assumption, rtvFTD might not be a pure FTLD-TDP type C disorder, unlike its left temporal counterpart svPPA. Large sample size pathological studies are warranted to understand the diverse pathologies of the right and left temporal variants of frontotemporal dementia.
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