title: The LRRK2 I2012T, G2019S and I2020T mutations are not common in patients with essential tremor.
abstract: Several mutations in the leucine-rich repeat kinase 2 gene (LRRK2) have been identified both in familial and sporadic cases of Parkinson's disease (PD). G2019S, located at a kinase (MAPKKK) domain, is the most common mutation in the LRRK2 gene in PD, Two adjacent mutations (I2012T and I2020T) were mapped to the same domain suggesting shared pathogenic mechanism of these mutations. Since phenotypes of PD overlap with essential tremor (ET), we investigated LRRK2 G2019S, I2012T, and I2020T mutations in a cohort of 272 patients with ET. No mutations were found in our ET cohort and, therefore, we conclude that LRKK2 I2012T, G2019S and I2020T variants are rare causes of Caucasian ET.
authors.affiliation: Department of Neurology, Baylor College of Medicine, 6550 Fannin, Suite 1801, Houston, TX 77030, USA.
authors.forename: Hao
authors.initials: H
authors.lastname: Deng
authors.forename: WeiDong
authors.initials: W
authors.lastname: Le
authors.forename: Anthony L
authors.initials: AL
authors.lastname: Davidson
authors.forename: WenJie
authors.initials: W
authors.lastname: Xie
authors.forename: Joseph
authors.initials: J
authors.lastname: Jankovic
mesh_terms: D000293:Adolescent; D000328:Adult; D017668:Age of Onset; D000368:Aged; D000369:Aged, 80 and over; D020329:Essential Tremor / Q000453:epidemiology / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D006801:Humans; D000071158:Leucine-Rich Repeat Serine-Threonine Protein Kinase-2; D008297:Male; D008875:Middle Aged; D009154:Mutation / Q000502:physiology*; D010300:Parkinson Disease / Q000235:genetics; D017346:Protein Serine-Threonine Kinases / Q000235:genetics*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014481:United States / Q000453:epidemiology
chemical_list: C495280:LRRK2 protein, human; D000071158:Leucine-Rich Repeat Serine-Threonine Protein Kinase-2; D017346:Protein Serine-Threonine Kinases