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Fine mapping and resequencing of the PARK16 locus in Parkinsons disease
Oslo University Hospital, Norway; University of Oslo, Norway.
Oslo University Hospital, Norway.
Drammen Hospital, Norway.
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Region Östergötland, Center for Diagnostics, Department of Clinical Chemistry. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Local Health Care Services in Central Östergötland, Department of Neurology.
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2015 (English)In: Journal of Human Genetics, ISSN 1434-5161, E-ISSN 1435-232X, Vol. 60, no 7, 357-362 p.Article in journal (Refereed) Published
Abstract [en]

The PARK16 locus, spanning five genes on chromosome 1, was among the first genetic regions to show genome-wide association in Parkinsons disease (PD). Subsequent investigations have found variability in PARK16 top-hits and association patterns across populations, and the implicated genes and mechanisms are currently unclear. In the present study, we aimed to explore the contribution of PARK16 variability to PD risk in a Scandinavian population. We genotyped 17 single-nucleotide polymorphisms in a case-control sample set of 2570 individuals from Norway and Sweden to fine map the locus. Targeted resequencing of the full coding regions of SLC45A3, NUCKS1, RAB7L1, SLC41A1 and PM20D1 was performed in DNA pools from a subset of 387 patient samples. We find evidence for an association with PD for rs1775143 as well as a haplotype located around the 5 region of RAB7L1, implicating variants which are not in high linkage disequilibrium with the strongest signal from a recent large meta-analysis in Caucasians. We also provide suggestive support for epistasis between RAB7L1 and LRRK2 as previously hypothesized by others. Comparing our results with previous work, allelic heterogeneity at PARK16 appears likely, and further studies are warranted to disentangle the complex patterns of association and pinpoint the functionally relevant variants.

Place, publisher, year, edition, pages
Nature Publishing Group: Open Access Hybrid Model Option A , 2015. Vol. 60, no 7, 357-362 p.
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Clinical Medicine
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URN: urn:nbn:se:liu:diva-120747DOI: 10.1038/jhg.2015.34ISI: 000358606400003PubMedID: 25855069OAI: oai:DiVA.org:liu-120747DiVA: diva2:848183
Note

Funding Agencies|Health Region South-East, Norway; Research Council of Norway; Norwegian Parkinson Association Research Fund; Swedish Medical Research Council; Swedish Parkinson Foundation; King Gustaf Vs and Queen Victorias Freemason foundation; Swedish Brain Power; Southeastern Regional Health Authorities; "Functional Genomics" program of the Research Council of Norway; "Infrastructure" program of the Research Council of Norway; Swedish Parkinsons Disease Association; Rebergs Legacy

Available from: 2015-08-24 Created: 2015-08-24 Last updated: 2016-04-25

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Dizdar, Nil
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Division of Neuro and Inflammation ScienceDepartment of Clinical ChemistryFaculty of Medicine and Health SciencesDepartment of Neurology
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