ATXN2 trinucleotide repeat length correlates with risk of ALS

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We investigated a CAG trinucleotide repeat expansion in the ATXN2 gene in amyotrophic lateral sclerosis (ALS). Two new case-control studies, a British dataset of 1474 ALS cases and 567 controls, and a Dutch dataset of 1328 ALS cases and 691 controls were analyzed. In addition, to increase power, we systematically searched PubMed for case-control studies published after 1 August 2010 that investigated the association between ATXN2 intermediate repeats and ALS. We conducted a meta-analysis of the new and existing studies for the relative risks of ATXN2 intermediate repeat alleles of between 24 and 34 CAG trinucleotide repeats and ALS. There was an overall increased risk of ALS for those carrying intermediate sized trinucleotide repeat alleles (odds ratio 3.06 [95% confidence interval 2.37-3.94]; p = 6 × 10(-18)), with an exponential relationship between repeat length and ALS risk for alleles of 29-32 repeats (R(2) = 0.91, p = 0.0002). No relationship was seen for repeat length and age of onset or survival. In contrast to trinucleotide repeat diseases, intermediate ATXN2 trinucleotide repeat expansion in ALS does not predict age of onset but does predict disease risk.

MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Neurovetenskaper hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Neurosciences hsv//eng
ALS
ATXN2
Age of onset
Amyotrophic lateral sclerosis
CAG
Expansion
Exponential risk
Intermediate expansion
Risk
SCA2
Trinucleotide repeat
Triplet

Shatunov, Aleksey (author)
Stahl, Daniel (author)
Shoai, Maryam (author)
van Rheenen, Wouter (author)
Jones, Ashley R. (author)
Al-Sarraj, Safa (author)
Andersen, Peter M.Umeå universitet,Klinisk neurovetenskap(Swepub:umu)pean0001 (author)
Bonini, Nancy M (author)
Conforti, Francesca L (author)
Van Damme, Philip (author)
Daoud, Hussein (author)
Del Mar Amador, Maria (author)
Fogh, Isabella (author)
Forzan, Monica (author)
Gaastra, Ben (author)
Gellera, Cinzia (author)
Gitler, Aaron D (author)
Hardy, John (author)
Fratta, Pietro (author)
La Bella, Vincenzo (author)
Le Ber, Isabelle (author)
Van Langenhove, Tim (author)
Lattante, Serena (author)
Lee, Yi-Chung (author)
Malaspina, Andrea (author)
Meininger, Vincent (author)
Millecamps, Stéphanie (author)
Orrell, Richard (author)
Rademakers, Rosa (author)
Robberecht, Wim (author)
Rouleau, Guy (author)
Ross, Owen A (author)
Salachas, Francois (author)
Sidle, Katie (author)
Smith, Bradley N (author)
Soong, Bing-Wen (author)
Sorarù, Gianni (author)
Stevanin, Giovanni (author)
Kabashi, Edor (author)
Troakes, Claire (author)
van Broeckhoven, Christine (author)
Veldink, Jan H (author)
van den Berg, Leonard H (author)
Shaw, Christopher E (author)
Powell, John F (author)
Al-Chalabi, Ammar (author)
Umeå universitetKlinisk neurovetenskap (creator_code:org_t)

By the author/editor: Sproviero, Willi ...; Shatunov, Alekse ...; Stahl, Daniel; Shoai, Maryam; van Rheenen, Wou ...; Jones, Ashley R.; show more...; Al-Sarraj, Safa; Andersen, Peter ...; Bonini, Nancy M; Conforti, France ...; Van Damme, Phili ...; Daoud, Hussein; Del Mar Amador, ...; Fogh, Isabella; Forzan, Monica; Gaastra, Ben; Gellera, Cinzia; Gitler, Aaron D; Hardy, John; Fratta, Pietro; La Bella, Vincen ...; Le Ber, Isabelle; Van Langenhove, ...; Lattante, Serena; Lee, Yi-Chung; Malaspina, Andre ...; Meininger, Vince ...; Millecamps, Stép ...; Orrell, Richard; Rademakers, Rosa; Robberecht, Wim; Rouleau, Guy; Ross, Owen A; Salachas, Franco ...; Sidle, Katie; Smith, Bradley N; Soong, Bing-Wen; Sorarù, Gianni; Stevanin, Giovan ...; Kabashi, Edor; Troakes, Claire; van Broeckhoven, ...; Veldink, Jan H; van den Berg, Le ...; Shaw, Christophe ...; Powell, John F; Al-Chalabi, Amma ...; show less...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Neurosciences

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