6 documents found, page 1 of 1
Whole genome sequencing analysis reveals post-zygotic mutation variability in m...
Tazelaar, Gijs H.P.; Hop, Paul J.; Seelen, Meinie; van Vugt, Joke J.F.A.; van Rheenen, Wouter; Kool, Lindy; van Eijk, Kristel R.; Gijzen, MarleenAmyotrophic lateral sclerosis is a heterogeneous, fatal neurodegenerative disease, characterized by motor neuron loss and in 50% of cases also by cognitive and/or behavioral changes. Mendelian forms of ALS comprise approximately 10-15% of cases. The majority is however considered sporadic, but also with a high contribution of genetic risk factors. To explore the contribution of somatic mutations and/or epigenet...
Structural variation analysis of 6,500 whole genome sequences in amyotrophic la...
Al Khleifat, Ahmad; Iacoangeli, Alfredo; van Vugt, Joke J. F. A.; Bowles, Harry; Moisse, Matthieu; Zwamborn, Ramona A. J.; van der Spek, Rick A. A.There is a strong genetic contribution to Amyotrophic lateral sclerosis (ALS) risk, with heritability estimates of up to 60%. Both Mendelian and small effect variants have been identified, but in common with other conditions, such variants only explain a little of the heritability. Genomic structural variation might account for some of this otherwise unexplained heritability. We therefore investigated associati...
Genome-wide study of DNA methylation shows alterations in metabolic, inflammato...
Hop, Paul J.; Zwamborn, Ramona A. J.; Hannon, Eilis; Shireby, Gemma L.; Nabais, Marta F.; Walker, Emma M.; van Rheenen, Wouter; van Vugt, Joke J. F. A.Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease with an estimated heritability between 40 and 50%. DNA methylation patterns can serve as proxies of (past) exposures and disease progression, as well as providing a potential mechanism that mediates genetic or environmental risk. Here, we present a blood-based epigenome-wide association study meta-analysis in 9706 samples passing stringent...
Genome-wide analyses identify KIF5A as a novel ALS gene
Nicolas, Aude; Kenna, Kevin P.; Renton, Alan E.; Ticozzi, Nicola; Faghri, Faraz; Chia, Ruth; Dominov, Janice A.; Kenna, Brendan J.; Nalls, Mike A.To identify novel genes associated with ALS, we undertook two lines of investigation. We carried out a genome-wide association study comparing 20,806 ALS cases and 59,804 controls. Independently, we performed a rare variant burden analysis comparing 1,138 index familial ALS cases and 19,494 controls. Through both approaches, we identified kinesin family member 5A (KIF5A) as a novel gene associated with ALS. Int...
Genome-wide association analyses identify new risk variants and the genetic arc...
van Rheenen, Wouter; Shatunov, Aleksey; Dekker, Annelot M.; McLaughlin, Russell L.; Diekstra, Frank P.; Pulit, Sara L.; van der Spek, Rick A. A.To elucidate the genetic architecture of amyotrophic lateral sclerosis (ALS) and find associated loci, we assembled a custom imputation reference panel from whole-genome-sequenced patients with ALS and matched controls (n = 1,861). Through imputation and mixed-model association analysis in 12,577 cases and 23,475 controls, combined with 2,579 cases and 2,767 controls in an independent replication cohort, we fin...
A blinded international study on the reliability of genetic testing for GGGGCC-...
Akimoto, Chizuru; Volk, Alexander E.; van Blitterswijk, Marka; Van den Broeck, Marleen; Leblond, Claire S.; Lumbroso, Serge; Camu, WilliamBackground: The GGGGCC-repeat expansion in C9orf72 is the most frequent mutation found in patients with amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). Most of the studies on C9orf72 have relied on repeat-primed PCR (RP-PCR) methods for detection of the expansions. To investigate the inherent limitations of this technique, we compared methods and results of 14 laboratories. Methods: The 1...