Volume 24, Issue 2 pp. 281-294
ORIGINAL ARTICLE

Utility of the Japanese version of the Clinical Dementia Rating® plus National Alzheimer's Coordinating Centre Behaviour and Language Domains for sporadic cases of frontotemporal dementia in Japan

Daiki Taomoto

Daiki Taomoto

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

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Shunsuke Sato

Shunsuke Sato

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

Department of Psychiatry, Esaka Hospital, Suita, Japan

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Hideki Kanemoto

Corresponding Author

Hideki Kanemoto

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

Correspondence:

Dr Hideki Kanemoto, MD, PhD, Department of Psychiatry, Osaka University Graduate School of Medicine, D3 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan. E-mail: [email protected]

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Maki Suzuki

Maki Suzuki

Department of Behavioural Neurology and Neuropsychiatry, United Graduate School of Child Development, Osaka University, Osaka, Japan

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Natsuho Hirakawa

Natsuho Hirakawa

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

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Akihiro Takasaki

Akihiro Takasaki

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

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Miu Akimoto

Miu Akimoto

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

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Yuto Satake

Yuto Satake

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

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Fuyuki Koizumi

Fuyuki Koizumi

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

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Kenji Yoshiyama

Kenji Yoshiyama

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

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Rei Takahashi

Rei Takahashi

Brain Function Centre, Nippon Life Hospital, Osaka, Japan

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Kazue Shigenobu

Kazue Shigenobu

Department of Behavioural Neurology and Neuropsychiatry, United Graduate School of Child Development, Osaka University, Osaka, Japan

Department of Psychiatry, Asakayama General Hospital, Sakai, Japan

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Mamoru Hashimoto

Mamoru Hashimoto

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

Department of Neuropsychiatry, Kindai University Faculty of Medicine, Osakasayama, Japan

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Toji Miyagawa

Toji Miyagawa

Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA

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Bradley Boeve

Bradley Boeve

Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA

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David Knopman

David Knopman

Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA

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Etsuro Mori

Etsuro Mori

Department of Behavioural Neurology and Neuropsychiatry, United Graduate School of Child Development, Osaka University, Osaka, Japan

Brain Function Centre, Nippon Life Hospital, Osaka, Japan

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Manabu Ikeda

Manabu Ikeda

Department of Psychiatry, Osaka University Graduate School of Medicine, Suita, Japan

Brain Function Centre, Nippon Life Hospital, Osaka, Japan

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First published: 28 December 2023

Abstract

Background

We aimed to validate the Clinical Dementia Rating (CDR®) dementia staging instrument plus the National Alzheimer's Coordinating Centre Behaviour and Language Domains (CDR® plus NACC FTLD) for use in clinical settings in Japan and in the Japanese language.

Methods

This prospective observational study enrolled 29 patients with frontotemporal dementia (FTD) and 21 patients with Alzheimer's disease (AD) dementia from the Departments of Psychiatry at Osaka University Hospital and Asakayama General Hospital and the Brain Function Centre at Nippon Life Hospital. CDR® plus NACC FTLD, CDR®, Mini-Mental State Examination (MMSE), Western Aphasia Battery (WAB), Neuropsychiatric Inventory-plus (NPI-plus), Stereotypy Rating Inventory (SRI), and frontal behavioural symptom scores obtained from items of NPI-plus and SRI, were conducted to assess inter- and intra-rater reliability, validity, and responsiveness. We performed receiver operating characteristic (ROC) curve analysis to evaluate the discriminating power of the Behaviour/Comportment/Personality (BEHAV) and Language (LANG) domains of the CDR® plus NACC FTLD and the MEMORY domain of the CDR® in patients AD dementia and FTD.

Results

The CDR® plus NACC FTLD showed good inter- and intra-rater reliabilities. In patients with FTD, the BEHAV domain of the CDR® plus NACC FTLD was significantly correlated with all clinical measures except for the SRI total score, while the LANG domain of the CDR® plus NACC FTLD was significantly correlated with the MMSE and the WAB-Aphasia quotient. In addition, the CDR® plus NACC FTLD sum of boxes significantly changed after 6 months and after 1 year. ROC curve analysis showed that the BEHAV and LANG domains of the CDR® plus NACC FTLD distinguished between patients with AD dementia and FTD better than the MEMORY domain of the CDR®.

Conclusions

This study validated the Japanese version of the CDR® plus NACC FTLD with good reliability, validity, and responsiveness.

DATA AVAILABILITY STATEMENT

The original contributions presented in the study are included in the article material; further inquiries can be directed to the corresponding author.

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