Abstract:
BACKGROUND:According to the Genetic Analysis Workshops (GAW), hundreds of thousands of SNPs have been tested for association with rheumatoid arthritis. Traditional genome-wide association studies (GWAS) have been developed to identify susceptibility genes using a "most significant SNPs/genes" model. However, many minor- or modest-risk genes are likely to be missed after adjustment of multiple testing. This screening process uses a strict selection of statistical thresholds that aim to identify susceptibility genes based only on statistical model, without considering multi-dimensional biological similarities in sequence arrangement, crystal structure, or functional categories/biological pathways between candidate and known disease genes. METHODS:Multidimensional screening approaches combined with traditional statistical genetics methods can consider multiple biological backgrounds of genetic mutation, structural, and functional annotations. Here we introduce a newly developed multidimensional screening approach for rheumatoid arthritis candidate genes that considers all SNPs with nominal evidence of Bayesian association (BFLn > 0), and structural and functional similarities of corresponding genes or proteins. RESULTS:Our multidimensional screening approach extracted all risk genes (BFLn > 0) by odd ratios of hypothesis H1 to H0, and determined whether a particular group of genes shared underlying biological similarities with known disease genes. Using this method, we found 6614 risk SNPs in our Bayesian screen result set. Finally, we identified 146 likely causal genes for rheumatoid arthritis, including CD4, FGFR1, and KDR, which have been reported as high risk factors by recent studies. We must denote that 790 (96.1%) of genes identified by GWAS could not easily be classified into related functional categories or biological processes associated with the disease, while our candidate genes shared underlying biological similarities (e.g. were in the same pathway or GO term) and contributed to disease etiology, but where common variations in each of these genes make modest contributions to disease risk. We also found 6141 risk SNPs that were too minor to be detected by conventional approaches, and associations between 58 candidate genes and rheumatoid arthritis were verified by literature retrieved from the NCBI PubMed module. CONCLUSIONS:Our proposed approach to the analysis of GAW16 data for rheumatoid arthritis was based on an underlying biological similarities-based method applied to candidate and known disease genes. Application of our method could identify likely causal candidate disease genes of rheumatoid arthritis, and could yield biological insights that not detected when focusing only on genes that give the strongest evidence by multiple testing. We hope that our proposed method complements the "most significant SNPs/genes" model, and provides additional insights into the pathogenesis of rheumatoid arthritis and other diseases, when searching datasets for hundreds of genetic variances.
journal_name
BMC Med Genomicsjournal_title
BMC medical genomicsauthors
Zhang L,Li W,Song L,Chen Ldoi
10.1186/1755-8794-3-38subject
Has Abstractpub_date
2010-08-20 00:00:00pages
38issn
1755-8794pii
1755-8794-3-38journal_volume
3pub_type
杂志文章abstract:BACKGROUND:Cancer cells are characterized by massive dysegulation of physiological cell functions with considerable disruption of transcriptional regulation. Genome-wide transcriptome profiling can be utilized for early detection and molecular classification of cancers. Accurate discrimination of functionally different...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-4-53
更新日期:2011-06-30 00:00:00
abstract:BACKGROUND:Currently, diagnosis of affected individuals with rare genetic disorders can be lengthy and costly, resulting in a diagnostic odyssey and in many patients a definitive molecular diagnosis is never achieved despite extensive clinical investigation. The recent advent and use of genomic medicine has resulted in...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-6-32
更新日期:2013-09-17 00:00:00
abstract:BACKGROUND:Non-small cell lung cancer (NSCLC) is the leading cause of cancer mortality worldwide. At present no reliable biomarkers are available to guide the management of this condition. Microarray technology may allow appropriate biomarkers to be identified but present platforms are lacking disease focus and are thu...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-1-20
更新日期:2008-05-30 00:00:00
abstract:BACKGROUND:Systemic sclerosis (SSc), a multi-organ disorder, is characterized by vascular abnormalities, dysregulation of the immune system, and fibrosis. The mechanisms underlying tissue pathology in SSc have not been entirely understood. This study intended to investigate the common and tissue-specific pathways invol...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-019-0632-2
更新日期:2019-12-27 00:00:00
abstract:BACKGROUND:DNA methylation is thought to be extensively involved in the pathogenesis of many diseases, including major psychosis. However, most studies focus on DNA methylation alteration at promoters of protein-coding genes, despite the poor correlation between DNA methylation and gene expression. METHODS:We analyzed...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-015-0139-4
更新日期:2015-10-14 00:00:00
abstract:BACKGROUND:Germline mutations in the folliculin (FLCN) gene are associated with the development of Birt-Hogg-Dubé syndrome (BHDS), a disease characterized by papular skin lesions, a high occurrence of spontaneous pneumothorax, and the development of renal neoplasias. The majority of renal tumors that arise in BHDS-affe...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-3-59
更新日期:2010-12-16 00:00:00
abstract:BACKGROUND:Ciguatoxins (CTXs) are polyether marine neurotoxins found in multiple reef-fish species and are potent activators of voltage-gated sodium channels. It is estimated that up to 500,000 people annually experience acute ciguatera poisoning from consuming toxic fish and a small percentage of these victims will de...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-015-0089-x
更新日期:2015-04-02 00:00:00
abstract:BACKGROUND:Prevalence of obesity is increasing to pandemic proportions. However, obese subjects differ in insulin resistance, adipokine production and co-morbidities. Based on fasting plasma analysis, obese subjects were grouped as Low Acylation Stimulating protein (ASP) and Triglyceride (TG) (LAT) vs High ASP and TG (...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-3-3
更新日期:2010-01-27 00:00:00
abstract:BACKGROUND:Despite being caused by mutations in different genes, diseases in the same phenotypic series are clinically similar, as reported in Part I of this study. Here, in Part II, we hypothesized that the phenotypic series too might be clinically similar. Furthermore, on the assumption that gene mutations indirectly...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-020-00793-y
更新日期:2020-09-24 00:00:00
abstract:BACKGROUND:Neoantigens can be differentially recognized by T cell receptor (TCR) as these sequences are derived from mutant proteins and are unique to the tumor. The discovery of neoantigens is the first key step for tumor-specific antigen (TSA) based immunotherapy. Based on high-throughput tumor genomic analysis, each...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-020-0683-4
更新日期:2020-04-03 00:00:00
abstract:BACKGROUND:With the increasing amount of high-throughput genomic sequencing data, there is a growing demand for a robust and flexible tool to perform interaction analysis. The identification of SNP-SNP, SNP-CpG, and higher order interactions helps explain the genetic etiology of human diseases, yet genome-wide analysis...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-019-0638-9
更新日期:2019-12-24 00:00:00
abstract:BACKGROUND:Since it is assumed that genetic interactions play an important role in understanding the mechanisms of complex diseases, different statistical approaches have been suggested in recent years for this task. One interesting approach is the entropy-based IGENT method by Kwon et al. that promises an efficient de...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-020-0703-4
更新日期:2020-04-23 00:00:00
abstract:BACKGROUND:The growing advances in DNA sequencing tools have made analyzing the human genome cheaper and faster. While such analyses are intended to identify complex variants, related to disease susceptibility and efficacy of drug responses, they have blurred the definitions of mutation and polymorphism. DISCUSSION:In...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-015-0115-z
更新日期:2015-07-15 00:00:00
abstract:BACKGROUND:DNA methylation levels will be important for detection of epigenetic effects. However, there are few reports showing sex-related differences in the sensitivity to DNA methylation. To evaluate their sex-related individual differences in the sensitivity to methylation rigorously, we performed a systematic anal...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-016-0217-2
更新日期:2016-08-26 00:00:00
abstract:BACKGROUND:The purpose of this paper is to describe the data collection efforts and validation of PhenX measures in the Personalized Medicine Research Project (PMRP) cohort. METHODS:Thirty-six measures were chosen from the PhenX Toolkit within the following domains: demographics; anthropometrics; alcohol, tobacco and ...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-7-3
更新日期:2014-01-14 00:00:00
abstract:BACKGROUND:As the sixth most common cancer worldwide, head and neck squamous cell carcinoma (HNSCC) develops visceral metastases during the advanced stage of the disease and exhibits a low five-year survival rate. The importance of tumor microenvironment (TME) in tumor initiation and metastasis is widely recognized. In...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-020-0707-0
更新日期:2020-03-30 00:00:00
abstract:BACKGROUND:While BMPR2 mutation strongly predisposes to pulmonary arterial hypertension (PAH), only 20% of mutation carriers develop clinical disease. This finding suggests that modifier genes contribute to FPAH clinical expression. Since modifiers are likely to be common alleles, this problem is not tractable by tradi...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-1-45
更新日期:2008-09-29 00:00:00
abstract:BACKGROUND:One of the tasks in the 2017 iDASH secure genome analysis competition was to enable training of logistic regression models over encrypted genomic data. More precisely, given a list of approximately 1500 patient records, each with 18 binary features containing information on specific mutations, the idea was f...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-018-0397-z
更新日期:2018-10-11 00:00:00
abstract:BACKGROUND:Expression quantitative trait loci (eQTL) are genomic regions regulating RNA transcript expression levels. Genome-wide Association Studies (GWAS) have identified many variants, often in non-coding regions, with unknown functions and eQTL provide a possible mechanism by which these variants may influence obse...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-7-31
更新日期:2014-06-03 00:00:00
abstract:BACKGROUND:Recent advances in omics technologies have raised great opportunities to study large-scale regulatory networks inside the cell. In addition, single-cell experiments have measured the gene and protein activities in a large number of cells under the same experimental conditions. However, a significant challeng...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-017-0312-z
更新日期:2017-12-28 00:00:00
abstract:BACKGROUND:Reliability of real-time PCR (RT-qPCR) data is dependent on the use of appropriate reference gene(s) for normalization. To date, no validated reference genes have been reported for normalizing gene expression in human myocardium. This study aimed to identify validated reference genes for use in gene expressi...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-1-64
更新日期:2008-12-29 00:00:00
abstract:BACKGROUND:Acute erythro- and megakaryoblastic leukaemias are associated with very poor prognoses and the mechanism of blastic transformation is insufficiently elucidated. The murine Graffi leukaemia retrovirus induces erythro- and megakaryoblastic leukaemias when inoculated into NFS mice and represents a good model to...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-3-2
更新日期:2010-01-26 00:00:00
abstract:BACKGROUNDS:Recent large-scale genetic studies often involve clustered phenotypes such as repeated measurements. Compared to a series of univariate analyses of single phenotypes, an analysis of clustered phenotypes can be useful for substantially increasing statistical power to detect more genetic associations. Moreove...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-019-0517-4
更新日期:2019-07-11 00:00:00
abstract:BACKGROUND:Glucocorticoids act on the glucocorticoid receptor (GR; NR3C1) to resolve inflammation and, as inhaled corticosteroids (ICS), are the cornerstone of treatment for asthma. However, reduced efficacy in severe disease or exacerbations indicates a need to improve ICS actions. METHODS:Glucocorticoid-driven trans...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-018-0467-2
更新日期:2019-01-31 00:00:00
abstract:BACKGROUND:Gastric emptying is impaired in patients with gastroparesis whereas it is either unchanged or accelerated in obese individuals. The goal of the current study was to identify changes in gene expression in the stomach muscularis that may be contributing to altered gastric motility in idiopathic gastroparesis a...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-019-0550-3
更新日期:2019-06-20 00:00:00
abstract:BACKGROUND:At least 90% of human genes are alternatively spliced. Alternative splicing has an important function regulating gene expression and miss-splicing can contribute to risk for human diseases, including Alzheimer's disease (AD). METHODS:We developed a splicing decision model as a molecular mechanism to identif...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-018-0453-8
更新日期:2019-01-31 00:00:00
abstract:BACKGROUND:Uric acid is the primary byproduct of purine metabolism. Hyperuricemia is associated with body mass index (BMI), sex, and multiple complex diseases including gout, hypertension (HTN), renal disease, and type 2 diabetes (T2D). Multiple genome-wide association studies (GWAS) in individuals of European ancestry...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-4-17
更新日期:2011-02-04 00:00:00
abstract:BACKGROUND:The majority of copy number callers requires high read coverage data that is often achieved with elevated material input, which increases the heterogeneity of tissue samples. However, to gain insights into smaller areas within a tissue sample, e.g. a cancerous area in a heterogeneous tissue sample, less mate...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-020-00731-y
更新日期:2020-06-01 00:00:00
abstract:BACKGROUND:Whether high blood pressure has a causal effect on cognitive function as early as middle age is unclear. We investigated whether high blood pressure (BP) causally impairs cognitive function at midlife using Mendelian Randomization (MR). METHODS:We applied a two-sample MR approach to investigate the causal r...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-020-00769-y
更新日期:2020-08-26 00:00:00
abstract:BACKGROUND:Microtia-atresia is characterized by abnormalities of the auricle (microtia) and aplasia or hypoplasia of the external auditory canal, often associated with middle ear abnormalities. To date, no causal genetic mutations or genes have been identified in microtia-atresia patients. METHODS:We designed a panel ...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-019-0475-x
更新日期:2019-01-28 00:00:00