A comprehensive screening of copy number variability in dementia with Lewy bodies

Celia Kun-Rodrigues, Tatiana Orme, Susana Carmona, Dena G. Hernandez, Owen A. Ross, John D. Eicher, Claire Shepherd, Laura Parkkinen, Lee Darwent, Michael G. Heckman, Sonja W. Scholz, Juan C. Troncoso, Olga Pletnikova, Ted Dawson, Liana Rosenthal, Olaf Ansorge, Jordi Clarimon, Alberto Lleo, Estrella Morenas-Rodriguez, Lorraine ClarkLawrence S. Honig, Karen Marder, Afina Lemstra, Ekaterina Rogaeva, Peter St. George-Hyslop, Elisabet Londos, Henrik Zetterberg, Imelda Barber, Anne Braae, Kristelle Brown, Kevin Morgan, Claire Troakes, Safa Al-Sarraj, Tammaryn Lashley, Janice Holton, Yaroslau Compta, Vivianna Van Deerlin, Geidy E. Serrano, Thomas G. Beach, Suzanne Lesage, Douglas Galasko, Eliezer Masliah, Isabel Santana, Pau Pastor, Monica Diez-Fairen, Miquel Aguilar, Pentti J. Tienari, Liisa Myllykangas, Minna Oinas, Tamas Revesz, Andrew Lees, Brad F. Boeve, Ronald C. Petersen, Tanis J. Ferman, Valentina Escott-Price, Neill Graff-Radford, Nigel J. Cairns, John C. Morris, Stuart Pickering-Brown, David Mann, Glenda M. Halliday, John Hardy, John Q. Trojanowski, Dennis W. Dickson, Andrew Singleton, David J. Stone, Rita Guerreiro, Jose Bras

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


The role of genetic variability in dementia with Lewy bodies (DLB) is now indisputable; however, data regarding copy number variation (CNV) in this disease has been lacking. Here, we used whole-genome genotyping of 1454 DLB cases and 1525 controls to assess copy number variability. We used 2 algorithms to confidently detect CNVs, performed a case-control association analysis, screened for candidate CNVs previously associated with DLB-related diseases, and performed a candidate gene approach to fully explore the data. We identified 5 CNV regions with a significant genome-wide association to DLB; 2 of these were only present in cases and absent from publicly available databases: one of the regions overlapped LAPTM4B, a known lysosomal protein, whereas the other overlapped the NME1 locus and SPAG9. We also identified DLB cases presenting rare CNVs in genes previously associated with DLB or related neurodegenerative diseases, such as SNCA, APP, and MAPT. To our knowledge, this is the first study reporting genome-wide CNVs in a large DLB cohort. These results provide preliminary evidence for the contribution of CNVs in DLB risk.

Original languageEnglish
Pages (from-to)223.e1-223.e10
JournalNeurobiology of Aging
StatePublished - Mar 2019


  • Copy number variants
  • Dementia with Lewy bodies
  • Genome-wide
  • MAPT
  • SNCA


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