1. MSH3 modifies somatic instability and disease severity in Huntington’s and myotonic dystrophy type 1
- Author
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Flower, Michael, Lomeilkaite, Vilila, Ciosi, Marc, Cumming, Sarah, Morales, Fernando, Lo, Kitty, Hensman Moss, Davina, Jones, Lesley, Holmans, Peter, Monckton, Darren G., Tabrizi, Sarah J., Kraus, Peter, Hoffman, Rainer, Tobin, Alan, Borowsky, Beth, Keenan, S., Whitlock, Kathryn B., Queller, Sarah, Campbell, Colin, Wang, Chiachi, Langbehn, Doug, Axelson, Eric, Johnson, Hans, Acharya, Tanka, Cash, Dave M., Frost, Chris, Jones, Rebecca, Jurgens, Caroline, ‘t Hart, Ellen P., van der Grond, Jeroen, Witjes- Ane, Marie-Noelle N., Roos, Raymund A. C., Dumas, Eve M., van den Bogaard, Simon J. A., Stopford, Cheryl, Craufurd, David, Callaghan, Jenny, Arran, Natalie, Rosas, Diana D., Lee, S., Monaco, W., O’Regan, Alison, Milchman, Cassie, Frajman, E., Labuschagne, Izelle, Stout, Julie, Campbell, Melissa, Andrews, Sophie C., Bechtel, Natalie, Reilmann, Ralf, Bohlen, Stefan, Kennard, Chris, Berna, Claire, Hicks, Stephen, Durr, Alexandra, Pourchot, C., Bardinet, Eric, Nigaud, Kevin, Valabre`gue, Romain, Lehericy, Stephane, Marelli, Cecilia, Jauffret, Celine, Justo, Damian, Leavitt, Blair, Decolongon, Joji, Sturrock, Aaron, Coleman, Alison, Dar Santos, Rachelle, Patel, A., Gibbard, Claire, Whitehead, Daisy, Wild, Ed, Owen, Gail, Crawford, Helen, Malone, Ian, Lahiri, Nayana, Fox, Nick C., Hobbs, Nicola Z., Scahill, Rachael I., Ordidge, Roger, Pepple, Tracey, Read, Joy, Say, Miranda J., Landwehrmeyer, Bernhard, Daidj, Ferroudja, Bassez, Guillaume, Lignier, Baptiste, Couppey, Florence, Delmas, Stéphanie, Deux, Jean-François, Hankiewicz, Karolina, Dogan, Celine, Minier, Lisa, Chevalier, Pascale, Hamadouche, Amira, Catt, Michael, van Hees, Vincent, Catt, Sharon, Schwalber, Ameli, Dittrich, Juliane, Kierkegaard, Marie, Wenninger, Stephan, Schoser, Benedikt, Schüller, Angela, Stahl, Kristina, Künzel, Heike, Wolff, Martin, Jellinek, Anna, Moreno, Cecilia Jimenez, Gorman, Grainne, Lochmüller, Hanns, Trenell, Michael, van Laar, Sandra, Wood, Libby, Cassidy, Sophie, Newman, Jane, Charman, Sarah, Steffaneti, Renae, Taylor, Louise, Brownrigg, Allan, Day, Sharon, Atalaia, Antonio, Raaphorst, Joost, Okkersen, Kees, Engelen, Baziel van, Nikolaus, Stephanie, Cornelissen, Yvonne, van Nimwegen, Marlies, Maas, Daphne, Klerks, Ellen, Bouman, Sacha, Knoop, Hans, Heskamp, Linda, Heerschap, Arend, Rahmadi, Ridho, Groot, Perry, Heskes, Tom, Kapusta, Katarzyna, Glennon, Jeffrey, Abghari, Shaghayegh, Aschrafi, Armaz, Poelmans, Geert, Treweek, Shaun, Hogarth, Fiona, Littleford, Roberta, Donnan, Peter, Hapca, Adrian, Hannah, Michael, McKenzie, Emma, Rauchhaus, Petra, Cumming, Sarah A., Adam, Berit, Faber, Catharina, Merkies, Ingemar, TRACK-HD Investigators, OPTIMISTIC Consortium, Neurology, ANS - Neurodegeneration, APH - Mental Health, and Medical Psychology
- Subjects
0301 basic medicine ,congenital, hereditary, and neonatal diseases and abnormalities ,Single-nucleotide polymorphism ,Biology ,association study ,Myotonic dystrophy ,transcriptomics ,03 medical and health sciences ,Exon ,0302 clinical medicine ,Huntington's disease ,mental disorders ,medicine ,Allele ,Genetics ,myotonic dystrophy ,medicine.disease ,nervous system diseases ,Minor allele frequency ,030104 developmental biology ,MSH3 ,movement disorders ,Neurology (clinical) ,Trinucleotide repeat expansion ,030217 neurology & neurosurgery ,Reports ,Huntington’s disease - Abstract
A genome-wide association study recently identified an MSH3/DHFR locus associated with Huntington’s disease progression. Flower, Lomeikaite et al. identify tandem repeat variants at this locus, and show that a three-repeat allele is associated with reduced somatic expansion, delayed onset and slower progression in Huntington’s disease and myotonic dystrophy type 1., The mismatch repair gene MSH3 has been implicated as a genetic modifier of the CAG·CTG repeat expansion disorders Huntington’s disease and myotonic dystrophy type 1. A recent Huntington’s disease genome-wide association study found rs557874766, an imputed single nucleotide polymorphism located within a polymorphic 9 bp tandem repeat in MSH3/DHFR, as the variant most significantly associated with progression in Huntington’s disease. Using Illumina sequencing in Huntington’s disease and myotonic dystrophy type 1 subjects, we show that rs557874766 is an alignment artefact, the minor allele for which corresponds to a three-repeat allele in MSH3 exon 1 that is associated with a reduced rate of somatic CAG·CTG expansion (P = 0.004) and delayed disease onset (P = 0.003) in both Huntington’s disease and myotonic dystrophy type 1, and slower progression (P = 3.86 × 10−7) in Huntington’s disease. RNA-Seq of whole blood in the Huntington’s disease subjects found that repeat variants are associated with MSH3 and DHFR expression. A transcriptome-wide association study in the Huntington’s disease cohort found increased MSH3 and DHFR expression are associated with disease progression. These results suggest that variation in the MSH3 exon 1 repeat region influences somatic expansion and disease phenotype in Huntington’s disease and myotonic dystrophy type 1, and suggests a common DNA repair mechanism operates in both repeat expansion diseases.
- Published
- 2019
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