Volume 54, Issue 3 pp. 398-404
Research Article

Genotype–phenotype relationships in familial amyotrophic lateral sclerosis with FUS/TLS mutations in Japan

Tetsuya Akiyama MD

Tetsuya Akiyama MD

Department of Neurology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574 Japan

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Hitoshi Warita MD, PhD

Hitoshi Warita MD, PhD

Department of Neurology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574 Japan

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Masaaki Kato MD, PhD

Masaaki Kato MD, PhD

Department of Neurology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574 Japan

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Ayumi Nishiyama MD

Ayumi Nishiyama MD

Department of Neurology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574 Japan

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Rumiko Izumi MD, PhD

Rumiko Izumi MD, PhD

Department of Neurology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574 Japan

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Chikako Ikeda MD

Chikako Ikeda MD

Department of Neuropsychiatry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan

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Masaki Kamada MD, PhD

Masaki Kamada MD, PhD

Department of Neurological Intractable Disease Research, Kagawa University Faculty of Medicine, Kagawa, Japan

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Naoki Suzuki MD, PhD

Naoki Suzuki MD, PhD

Department of Neurology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574 Japan

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Masashi Aoki MD, PhD

Corresponding Author

Masashi Aoki MD, PhD

Department of Neurology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574 Japan

Correspondence to: M. Aoki; e-mail: [email protected]Search for more papers by this author
First published: 28 January 2016
Citations: 19

This article was published online on 23 FEB 2016. An error was subsequently identified. This notice is included in the online and print versions to indicate that both have been corrected 09 AUG 2016.

This study was supported by grants-in-aid for research on rare and intractable diseases; the Research Committee on Establishment of Novel Treatments for Amyotrophic Lateral Sclerosis; grants-in-aid from the Research Committee of CNS Degenerative Diseases of the Ministry of Health, Labour and Welfare of Japan; grants for research on nervous and mental disorders (20B-13), measures for intractable disease, and psychiatric and neurological disease and mental health; and grants-in-aid for scientific research (25293199 and 26461288) from the Japanese Ministry of Education, Culture, Sports, Science and Technology. The HGVD database was supported by a research grant (201238002A) for intractable diseases from the Ministry of Health, Labour and Welfare of Japan.

ABSTRACT

Introduction: We investigated possible genotype–phenotype correlations in Japanese patients with familial amyotrophic lateral sclerosis (FALS) carrying fused in sarcoma/translated in liposarcoma (FUS/TLS) gene mutations. Methods: A consecutive series of 111 Japanese FALS pedigrees were screened for copper/zinc superoxide dismutase 1 (SOD1) and FUS/TLS gene mutations. Clinical data, including onset age, onset site, disease duration, and extramotor symptoms, were collected. Results: Nine different FUS/TLS mutations were found in 12 pedigrees. Most of the patients with FUS/TLS-linked FALS demonstrated early onset in the brainstem/upper cervical region, and relatively short disease duration. A few mutations exhibited phenotypes that were distinct from typical cases. Frontotemporal dementia was present in 1 patient. Conclusions: This study revealed a characteristic phenotype in FUS/TLS-linked FALS patients in Japan. FUS/TLS screening is recommended in patients with FALS with this phenotype. Muscle Nerve 54: 398–404, 2016

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