Journal of Movement Disorders

Brief communication

Evaluating the Validity and Reliability of the Korean Version of the Scales for Outcomes in Parkinson’s Disease–Cognition: Jinse Park, Eungseok Oh, Seong-Beom Koh, In-Uk Song, Tae-Beom Ahn, Sang Jin Kim, Sang-Myung Cheon, Yoon-Joong Kim, Jin Whan Cho, Hyeo-Il Ma, Mee Young Park, Jong Sam Baik, Phil Hyu Lee, Sun Ju Chung, Jong-Min Kim, Han-Joon Kim, Young-Hee Sung, Do Young Kwon, Jae-Hyeok Lee, Jee-Young Lee, Ji Seon Kim, Ji Young Yun, Hee Jin Kim, Jin Yong Hong, Mi-Jung Kim, Jinyoung Youn, Hui-Jun Yang, Won Tae Yoon, Sooyeoun You, Kyum-Yil Kwon, Su-Yun Lee, Younsoo Kim, Hee-Tae Kim, Joong-Seok Kim, Ji-Young Kim; J Mov Disord. 2024;17(3):328-332. Published online April 3, 2024; DOI: https://doi.org/10.14802/jmd.24061

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Abstract PDF Supplementary Material: Objective
The Scales for Outcomes in Parkinson’s Disease–Cognition (SCOPA-Cog) was developed to assess cognition in patients with Parkinson’s disease (PD). In this study, we aimed to evaluate the validity and reliability of the Korean version of the SCOPACog (K-SCOPA-Cog).
Methods
We enrolled 129 PD patients with movement disorders from 31 clinics in South Korea. The original version of the SCOPA-Cog was translated into Korean using the translation-retranslation method. The test–retest method with an intraclass correlation coefficient (ICC) and Cronbach’s alpha coefficient were used to assess reliability. Spearman’s rank correlation analysis with the Montreal Cognitive Assessment-Korean version (MOCA-K) and the Korean Mini-Mental State Examination (K-MMSE) were used to assess concurrent validity.
Results
The Cronbach’s alpha coefficient was 0.797, and the ICC was 0.887. Spearman’s rank correlation analysis revealed a significant correlation with the K-MMSE and MOCA-K scores (r = 0.546 and r = 0.683, respectively).
Conclusion
Our results demonstrate that the K-SCOPA-Cog has good reliability and validity.

Original Articles

Clinical Heterogeneity of Atypical Pantothenate Kinase-Associated Neurodegeneration in Koreans: Jae-Hyeok Lee, Jongkyu Park, Ho-Sung Ryu, Hyeyoung Park, Young Eun Kim, Jin Yong Hong, Sang Ook Nam, Young-Hee Sung, Seung-Hwan Lee, Jee-Young Lee, Myung Jun Lee, Tae-Hyoung Kim, Chul Hyoung Lyoo, Sun Ju Chung, Seong Beom Koh, Phil Hyu Lee, Jin Whan Cho, Mee Young Park, Yun Joong Kim, Young H. Sohn, Beom Seok Jeon, Myung Sik Lee; J Mov Disord. 2016;9(1):20-27. Published online January 25, 2016; DOI: https://doi.org/10.14802/jmd.15058

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Objective
Neurodegeneration with brain iron accumulation (NBIA) represents a group of inherited movement disorders characterized by iron accumulation in the basal ganglia. Recent advances have included the identification of new causative genes and highlighted the wide phenotypic variation between and within the specific NBIA subtypes. This study aimed to investigate the current status of NBIA in Korea.
Methods
We collected genetically confirmed NBIA patients from twelve nationwide referral hospitals and from a review of the literature. We conducted a study to describe the phenotypic and genotypic characteristics of Korean adults with atypical pantothenate kinase-associated neurodegeneration (PKAN).
Results
Four subtypes of NBIA including PKAN (n = 30), PLA2G6-related neurodegeneration (n = 2), beta-propeller protein-associated neurodegeneration (n = 1), and aceruloplasminemia (n = 1) have been identified in the Korean population. The clinical features of fifteen adults with atypical PKAN included early focal limb dystonia, parkinsonism-predominant feature, oromandibular dystonia, and isolated freezing of gait (FOG). Patients with a higher age of onset tended to present with parkinsonism and FOG. The p.R440P and p.D378G mutations are two major mutations that represent approximately 50% of the mutated alleles. Although there were no specific genotype-phenotype correlations, most patients carrying the p.D378G mutation had a late-onset, atypical form of PKAN.
Conclusions
We found considerable phenotypic heterogeneity in Korean adults with atypical PKAN. The age of onset may influence the presentation of extrapyramidal symptoms.

Citations

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Typical pantothenate kinase-associated neurodegeneration caused by compound heterozygous mutations in PANK2 gene in a Chinese patient: a case report and literature review
Yilun Tao, Chen Zhao, Dong Han, Yiju Wei, Lihong Wang, Wenxia Song, Xiaoze Li
Frontiers in Neurology.2023;[Epub] CrossRef
The first Vietnamese patient who presented late onset of pantothenate kinase-associated neurodegeneration diagnosed by whole exome sequencing: A case report
Van Khanh Tran, Chi Dung Vu, Hai Anh Tran, Nguyen Thi Kim Lien, Nguyen Van Tung, Nguyen Ngoc Lan, Huy Thinh Tran, Nguyen Huy Hoang
Medicine.2023; 102(43): e34853. CrossRef
Genetic mutation spectrum of pantothenate kinase-associated neurodegeneration expanded by breakpoint sequencing in pantothenate kinase 2 gene
Dahae Yang, Sanghyun Cho, Sung Im Cho, Manjin Kim, Moon-Woo Seong, Sung Sup Park
Orphanet Journal of Rare Diseases.2022;[Epub] CrossRef
Long-Term Outcomes of Deep Brain Stimulation in Pantothenate Kinase-Associated Neurodegeneration-Related Dystonia
Kyung Ah Woo, Han-Joon Kim, Seung-Ho Jeon, Hye Ran Park, Kye Won Park, Seung Hyun Lee, Sun Ju Chung, Jong-Hee Chae, Sun Ha Paek, Beomseok Jeon
Journal of Movement Disorders.2022; 15(3): 241. CrossRef
Psychiatric symptoms in an adolescent reveal a novel compound heterozygous mutation of the PANK2 gene in the atypical PKAN syndrome
Luz María González Huerta, Sorina Gómez González, Jaime Toral López
Psychiatric Genetics.2021; 31(3): 95. CrossRef
Rational Design of Novel Therapies for Pantothenate Kinase–Associated Neurodegeneration
Nivedita Thakur, Thomas Klopstock, Suzanne Jackowski, Enej Kuscer, Fernando Tricta, Aleksandar Videnovic, Hyder A. Jinnah
Movement Disorders.2021; 36(9): 2005. CrossRef
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Ali S. Shalash, Thomas W. Rösler, Ibrahim Y. Abdelrahman, Hatem S. Abulmakarem, Stefanie H. Müller, Franziska Hopfner, Gregor Kuhlenbäumer, Günter U. Höglinger, Mohamed Salama
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Current Status of Huntington’s Disease in Korea: A Nationwide Survey and National Registry Analysis: Hyun Sook Kim, Chul Hyoung Lyoo, Phil Hyu Lee, Sang Jin Kim, Mee Young Park, Hyeo-Il Ma, Jae Hyeok Lee, Sook Kun Song, Jong Sam Baik, Jin Ho Kim, Myung Sik Lee; J Mov Disord. 2015;8(1):14-20. Published online January 31, 2015; DOI: https://doi.org/10.14802/jmd.14038

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23 Web of Science
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Abstract PDF

Objective Huntington’s disease (HD) is a rare neurological disorder, and its current status in Korea is not well investigated. This study aims to determine the prevalence and incidence of HD and to investigate the clinical features of HD patients in Korea.
Methods We estimated the crude prevalence and annual incidence of HD based on the databases of the Rare Diseases Registry (RDR) and the National Health Insurance (NHI). The clinical data of genetically confirmed HD patients was collected from 10 referral hospitals and analyzed.
Results The mean calculated annual incidence was 0.06 cases per 100,000 persons, and the mean calculated prevalence was 0.38 based on the NHI database. The estimated crude prevalence based on the RDR was 0.41. Of the sixty-eight HD patients recruited, the mean age of onset was 44.16 ± 14.08 years and chorea was most frequently reported as the initial symptom and chief complaint. The mean CAG repeat number of the expanded allele was 44.7 ± 4.8 and correlated inversely with the age of onset (p < 0.001). About two-thirds of the patients have a positive family history, and HD patients without positive family history showed a delay in onset of initial symptoms, a prolonged interval between initial symptom onset and genetic diagnosis and a delay in the age of genetic diagnosis.
Conclusions To the best of our knowledge, this is the first study to estimate the prevalence and incidence of HD in Korea and the largest HD series in the Asian population. Our analyses might be useful for further studies and large-scale investigations in HD patients.

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