Genome-wide association study in essential tremor identifies three new loci.

Brain 2016 12 20;139(Pt 12):3163-3169. Epub 2016 Oct 20.

3 Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, Montréal, Canada

We conducted a genome-wide association study of essential tremor, a common movement disorder characterized mainly by a postural and kinetic tremor of the upper extremities. Twin and family history studies show a high heritability for essential tremor. The molecular genetic determinants of essential tremor are unknown. We included 2807 patients and 6441 controls of European descent in our two-stage genome-wide association study. The 59 most significantly disease-associated markers of the discovery stage were genotyped in the replication stage. After Bonferroni correction two markers, one (rs10937625) located in the serine/threonine kinase STK32B and one (rs17590046) in the transcriptional coactivator PPARGC1A were associated with essential tremor. Three markers (rs12764057, rs10822974, rs7903491) in the cell-adhesion molecule CTNNA3 were significant in the combined analysis of both stages. The expression of STK32B was increased in the cerebellar cortex of patients and expression quantitative trait loci database mining showed association between the protective minor allele of rs10937625 and reduced expression in cerebellar cortex. We found no expression differences related to disease status or marker genotype for the other two genes. Replication of two lead single nucleotide polymorphisms of previous small genome-wide association studies (rs3794087 in SLC1A2, rs9652490 in LINGO1) did not confirm the association with essential tremor.

Download full-text PDF

Source
http://dx.doi.org/10.1093/brain/aww242DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5382938PMC
December 2016
179 Reads

Publication Analysis

Top Keywords

essential tremor
24
genome-wide association
16
association study
12
cerebellar cortex
8
study essential
8
tremor
7
essential
6
association
5
genome-wide
4
kinase stk32b
4
disease status
4
rs10937625 located
4
located serine/threonine
4
serine/threonine kinase
4
transcriptional coactivator
4
expression differences
4
ppargc1a associated
4
associated essential
4
coactivator ppargc1a
4
status marker
4

References

(Supplied by CrossRef)
Consensus statement of the Movement Disorder Society on Tremor
Deuschl et al.
Ad Hoc Scientific Committee. Mov Disord 1998

Similar Publications