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Recruiting NCT04023656

Prognosis of Paroxysmal Kinesigenic Choreoathetosis in Korea

— Observational Paroxysmal Kinesigenic Choreoathetosis

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
This is an observational study: the protocol does not assign a study treatment.
Who it may be relevant to
Registry conditions: Paroxysmal Kinesigenic Choreoathetosis. Basic parameters: from 18 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
South Korea
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

Unsure about the terms? Read our patient guide →

Official title

Prognosis of Paroxysmal Kinesigenic Choreoathetosis in Korea: a Prospective, Observational Study

Overview

The aim of this study is to assess the prognosis of paroxysmal kinesigenic choreoathetosis (PKC) in Korean.

Detailed description

PKC is a hyperkinetic movement disorder including dystonia, chorea, athetosis, or ballism, which are characteristically triggered by a sudden movement from rest. The prevalence of this disorder is estimated to be 1 in 150,000 population. Males are more commonly affected than females, and the age of onset is typically in childhood or adolescence. PKC is mainly a familial disorder with autosomal dominant inheritance and incomplete penetrance, but it can occur sporadically. The PRRT2 (proline-rich transmembrane protein 2) gene is believed to be the major causative gene.

The prognosis of PKC is usually favorable. The severity and frequency of the attacks are reduced by anticonvulsant medication such as carbamazepine, and the number of the attacks decreases at the age of 20-30 years. However, there has been little study of long-term prognosis of PKC, and no study has been conducted in Korean population.

Primary outcome measures

  • Changes in clinical characteristics of PKC relative to the baseline. [Time frame: up to 10 years]
  • Changes in clinical characteristics of PKC over the last year. [Time frame: up to 10 years]
  • Changes in medication history of PKC over the last year. [Time frame: up to 10 years]

Eligibility criteria

Inclusion criteria

  • Male or female PKC patients who were18 years of age and older
  • Subjects were diagnosed as paroxysmal kinesigenic choreoathetosis (PKC)
  • Subjects were enrolled voluntarily and understood the contents of this trial

Exclusion criteria

  • Existence of lesions on the brain
  • Existence of neurological deficit that suspected lesions on the brain
  • Existence of epileptiform discharges on electroencephalogram
  • Subjects with secondary PKC which was caused by other disorder or illness
  • Existence of illness or problems which made difficult to be enrolled to this trial judged by clinicians

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Observational model
Cohort

Study locations

South Korea · 1 center
  • Seoul National University Hospital — Seoul

Publications

  • Mao CY, Shi CH, Song B, Wu J, Ji Y, Qin J, Li YS, Wang JJ, Shang DD, Sun SL, Xu YM. Genotype-phenotype correlation in a cohort of paroxysmal kinesigenic dyskinesia cases. J Neurol Sci. 2014 May 15;340(1-2):91-3. doi: 10.1016/j.jns.2014.02.034. Epub 2014 Mar 3. PMID 24661410
  • Li HF, Chen WJ, Ni W, Wang KY, Liu GL, Wang N, Xiong ZQ, Xu J, Wu ZY. PRRT2 mutation correlated with phenotype of paroxysmal kinesigenic dyskinesia and drug response. Neurology. 2013 Apr 16;80(16):1534-5. doi: 10.1212/WNL.0b013e31828cf7e1. Epub 2013 Mar 27. No abstract available. PMID 23535490
  • Castiglioni C, Lopez I, Riant F, Bertini E, Terracciano A. PRRT2 mutation causes paroxysmal kinesigenic dyskinesia and hemiplegic migraine in monozygotic twins. Eur J Paediatr Neurol. 2013 May;17(3):254-8. doi: 10.1016/j.ejpn.2012.10.010. Epub 2012 Nov 19. PMID 23182655
  • Ebrahimi-Fakhari D, Saffari A, Westenberger A, Klein C. The evolving spectrum of PRRT2-associated paroxysmal diseases. Brain. 2015 Dec;138(Pt 12):3476-95. doi: 10.1093/brain/awv317. Epub 2015 Nov 23. PMID 26598493
  • Bruno MK, Hallett M, Gwinn-Hardy K, Sorensen B, Considine E, Tucker S, Lynch DR, Mathews KD, Swoboda KJ, Harris J, Soong BW, Ashizawa T, Jankovic J, Renner D, Fu YH, Ptacek LJ. Clinical evaluation of idiopathic paroxysmal kinesigenic dyskinesia: new diagnostic criteria. Neurology. 2004 Dec 28;63(12):2280-7. doi: 10.1212/01.wnl.0000147298.05983.50. PMID 15623687
  • Unterberger I, Trinka E. Diagnosis and treatment of paroxysmal dyskinesias revisited. Ther Adv Neurol Disord. 2008 Sep;1(2):4-11. doi: 10.1177/1756285608095119. PMID 21180566
  • Bennett LB, Roach ES, Bowcock AM. A locus for paroxysmal kinesigenic dyskinesia maps to human chromosome 16. Neurology. 2000 Jan 11;54(1):125-30. doi: 10.1212/wnl.54.1.125. PMID 10636137
  • Gardiner AR, Jaffer F, Dale RC, Labrum R, Erro R, Meyer E, Xiromerisiou G, Stamelou M, Walker M, Kullmann D, Warner T, Jarman P, Hanna M, Kurian MA, Bhatia KP, Houlden H. The clinical and genetic heterogeneity of paroxysmal dyskinesias. Brain. 2015 Dec;138(Pt 12):3567-80. doi: 10.1093/brain/awv310. Epub 2015 Nov 23. PMID 26598494

Identifiers

NCT: NCT04023656 · 1611HJKim808

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗