scholarly journals Enrichment of de novo mutations in non-SNP sites in autism spectrum disorders and an empirical test of the neutral DNA model

2019 ◽  
Vol 19 (3) ◽  
pp. 343-355
Author(s):  
Ye Zhang ◽  
Shi Huang
2017 ◽  
Author(s):  
Ye Zhang ◽  
Shi Huang

AbstractThe genetic basis of autism spectrum disorders (ASD) remains better understood and might concern only a small fraction of the genome if the neutral theory were true. We here analyzed published de novo mutations (DNMs) in ASD and controls. We found that DNMs in normal subjects occurred at positions bearing SNPs at least 3.45 fold more frequent than expected from the neutral theory, whereas DNMs in ASD were less frequent relative to those in controls, especially so for common SNPs with minor allele frequency >0.01. Among sites bearing both SNPs and DNMs, DNMs in controls occurred significantly more frequent than DNMs in ASD at reference allele sites bearing C or G nucleotides, indicating depletion of ASD associated DNMs in known regions of hypermutability or less functional constraints such as CpG sites. We also analyzed the nucleotide compositions of DNMs and the parity (1:1 ratio) of pyrimidines and purines. We found that DNMs in ASD showed overall lower AT content than that in controls. Parity violations and AT bias in DNMs occurred at expected frequency based on chance in both ASD and controls. These results show enrichment of DNMs at positions bearing SNP sites and C or G sites in normal subjects and less so in ASD, which is not expected from the neutral model, and indicate that DNMs are on average more deleterious in ASD than in controls.


2015 ◽  
Vol 77 (9) ◽  
pp. 816-822 ◽  
Author(s):  
Alexandra Pinggera ◽  
Andreas Lieb ◽  
Bruno Benedetti ◽  
Michaela Lampert ◽  
Stefania Monteleone ◽  
...  

Nature ◽  
2012 ◽  
Vol 485 (7397) ◽  
pp. 242-245 ◽  
Author(s):  
Benjamin M. Neale ◽  
Yan Kou ◽  
Li Liu ◽  
Avi Ma’ayan ◽  
Kaitlin E. Samocha ◽  
...  

2012 ◽  
Vol 44 (4) ◽  
pp. 471-471 ◽  
Author(s):  
Brian J O'Roak ◽  
Pelagia Deriziotis ◽  
Choli Lee ◽  
Laura Vives ◽  
Jerrod J Schwartz ◽  
...  

2011 ◽  
Vol 43 (6) ◽  
pp. 585-589 ◽  
Author(s):  
Brian J O'Roak ◽  
Pelagia Deriziotis ◽  
Choli Lee ◽  
Laura Vives ◽  
Jerrod J Schwartz ◽  
...  

2014 ◽  
Vol 15 (2) ◽  
pp. 133-141 ◽  
Author(s):  
Michael Ronemus ◽  
Ivan Iossifov ◽  
Dan Levy ◽  
Michael Wigler

2011 ◽  
Vol 64 (11) ◽  
pp. 1470 ◽  
Author(s):  
Soojin Lim ◽  
Mark Lowry ◽  
Robert M. Strongin

A rhodamine based boronic acid linearly responds to increasing 5-aminoimidazole-4-carboxamide riboside (AICAr) concentrations in human urine. This method is thus an advance in detecting adenylosuccinate lyase (ADSL) deficiency as AICAr is a model riboside for the ADSL substrates succinyladenosine (S-Ado) and succinylaminoimidazolecarboxamide riboside (SAICAr). ADSL deficiency is a rare but devastating disease of de novo purine synthesis in infants. Its diagnosis is also significant as it is one of the autism spectrum disorders.


2013 ◽  
Vol 95 (4) ◽  
pp. 121-129 ◽  
Author(s):  
MINGBANG WANG ◽  
XIAOMEI FAN ◽  
TAO WANG ◽  
JINYU WU

SummaryAutism spectrum disorders (ASDs) are lifelong neurodevelopmental disabilities that affect 1 in 88 children in the USA. Despite the high heritability, the genetic basis for a majority of the ASDs remains elusive. The considerable clinical and genetic heterogeneity pose a significant challenge technically. State-of-the-art high-throughput sequencing (HTS), which makes the analyses of any specific single/multiple genes or whole exomes feasible, has shown a promising perspective in disease gene discovery. To date, numerous genetic studies using HTS have been reported and many rare inherited or de novo mutations have been identified. This review will focus on the progress and prospective of genome studies of ASDs using HTS.


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