Abstract:
BACKGROUND:Glioblastoma is a complex multifactorial disorder that has swift and devastating consequences. Few genes have been consistently identified as prognostic biomarkers of glioblastoma survival. The goal of this study was to identify general and clinical-dependent biomarker genes and biological processes of three complementary events: lifetime, overall and progression-free glioblastoma survival. METHODS:A novel analytical strategy was developed to identify general associations between the biomarkers and glioblastoma, and associations that depend on cohort groups, such as race, gender, and therapy. Gene network inference, cross-validation and functional analyses further supported the identified biomarkers. RESULTS:A total of 61, 47 and 60 gene expression profiles were significantly associated with lifetime, overall, and progression-free survival, respectively. The vast majority of these genes have been previously reported to be associated with glioblastoma (35, 24, and 35 genes, respectively) or with other cancers (10, 19, and 15 genes, respectively) and the rest (16, 4, and 10 genes, respectively) are novel associations. Pik3r1, E2f3, Akr1c3, Csf1, Jag2, Plcg1, Rpl37a, Sod2, Topors, Hras, Mdm2, Camk2g, Fstl1, Il13ra1, Mtap and Tp53 were associated with multiple survival events.Most genes (from 90 to 96%) were associated with survival in a general or cohort-independent manner and thus the same trend is observed across all clinical levels studied. The most extreme associations between profiles and survival were observed for Syne1, Pdcd4, Ighg1, Tgfa, Pla2g7, and Paics. Several genes were found to have a cohort-dependent association with survival and these associations are the basis for individualized prognostic and gene-based therapies. C2, Egfr, Prkcb, Igf2bp3, and Gdf10 had gender-dependent associations; Sox10, Rps20, Rab31, and Vav3 had race-dependent associations; Chi3l1, Prkcb, Polr2d, and Apool had therapy-dependent associations. Biological processes associated glioblastoma survival included morphogenesis, cell cycle, aging, response to stimuli, and programmed cell death. CONCLUSIONS:Known biomarkers of glioblastoma survival were confirmed, and new general and clinical-dependent gene profiles were uncovered. The comparison of biomarkers across glioblastoma phases and functional analyses offered insights into the role of genes. These findings support the development of more accurate and personalized prognostic tools and gene-based therapies that improve the survival and quality of life of individuals afflicted by glioblastoma multiforme.
journal_name
BMC Med Genomicsjournal_title
BMC medical genomicsauthors
Serão NV,Delfino KR,Southey BR,Beever JE,Rodriguez-Zas SLdoi
10.1186/1755-8794-4-49subject
Has Abstractpub_date
2011-06-07 00:00:00pages
49issn
1755-8794pii
1755-8794-4-49journal_volume
4pub_type
杂志文章abstract:BACKGROUND:Epithelial to mesenchymal transition, and mimicking processes, contribute to cancer invasion and metastasis, and are known to be responsible for resistance to various therapeutic agents in many cancers. While a number of studies have proposed molecular signatures that characterize the spectrum of such transi...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-017-0252-7
更新日期:2017-03-09 00:00:00
abstract:BACKGROUND:Integrating multiple data sources is indispensable in improving disease gene identification. It is not only due to the fact that disease genes associated with similar genetic diseases tend to lie close with each other in various biological networks, but also due to the fact that gene-disease associations are...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-8-S3-S2
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:In recent years, high-throughput protein interaction identification methods have generated a large amount of data. When combined with the results from other in vivo and in vitro experiments, a complex set of relationships between biological molecules emerges. The growing popularity of network analysis and da...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-8-S2-S9
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:Cardiac pathological hypertrophy is associated with a significantly increased risk of coronary heart disease and has been observed in diabetic patients treated with rosiglitazone whereas most published studies do not suggest a similar increase in risk of cardiovascular events in pioglitazone-treated diabetic...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-7-35
更新日期:2014-06-17 00:00:00
abstract:BACKGROUND:Despite their singular origin, monozygotic twin pairs often display discordance for complex disorders including schizophrenia. It is a common (1%) and often familial disease with a discordance rate of ~50% in monozygotic twins. This high discordance is often explained by the role of yet unknown environmental...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-015-0093-1
更新日期:2015-05-06 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:Postmenopausal hormone therapy (HT) influences endogenous hormone concentrations and increases the risk of breast cancer. Gene expression profiling may reveal the mechanisms behind this relationship.Our objective was to explore potential associations between sex hormones and gene expression in whole blood fr...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-4-29
更新日期:2011-03-31 00:00:00
abstract:BACKGROUND:Loss of heterozygosity (LOH) is a common genetic event in cancer development, and is known to be involved in the somatic loss of wild-type alleles in many inherited cancer syndromes. The wider involvement of LOH in cancer is assumed to relate to unmasking a somatically mutated tumour suppressor gene through ...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-015-0123-z
更新日期:2015-08-01 00:00:00
abstract:BACKGROUND:The collection of viable DNA samples is an essential element of any genetics research programme. Biological samples for DNA purification are now routinely collected in many studies with a variety of sampling methods available. Initial observation in this study suggested a reduced genotyping success rate of s...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-6-20
更新日期:2013-06-10 00:00:00
abstract:BACKGROUND:The rapid adoption of next-generation sequencing provides an efficient system for detecting somatic alterations in neoplasms. The detection of such alterations requires a matched non-neoplastic sample for adequate filtering of non-somatic events such as germline polymorphisms. Non-neoplastic tissue adjacent ...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-016-0226-1
更新日期:2016-10-19 00:00:00
abstract:BACKGROUND:Cytokine-induced killer (CIK) cells are an emerging approach of cancer treatment. Our previous study have shown that CIK cells stimulated with combination of IL-2 and IL-15 displayed improved proliferation capacity and tumor cytotoxicity. However, the mechanisms of CIK cell proliferation and acquisition of c...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-7-49
更新日期:2014-08-09 00:00:00
abstract:BACKGROUND:Prostate cancer is one of the most common complex diseases with high leading cause of death in men. Identifications of prostate cancer associated genes and biomarkers are thus essential as they can gain insights into the mechanisms underlying disease progression and advancing for early diagnosis and developi...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-7-S1-S3
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Non-coding RNA has been shown to participate in numerous biological and pathological processes and has attracted increasing attention in recent years. Recent studies have demonstrated that long non-coding RNA and micro RNA can interact through various mechanisms to regulate mRNA. Yet the gene-gene interactio...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-019-0570-z
更新日期:2019-08-23 00:00:00
abstract:BACKGROUND:Gene expression studies require appropriate normalization methods. One such method uses stably expressed reference genes. Since suitable reference genes appear to be unique for each tissue, we have identified an optimal set of the most stably expressed genes in human blood that can be used for normalization....
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-2-49
更新日期:2009-08-05 00:00:00
abstract:BACKGROUND:Childhood asthma is a syndrome composed of heterogeneous phenotypes; furthermore, intrinsic biologic variation among racial/ethnic populations suggests possible genetic ancestry variation in childhood asthma. The objective of the study is to identify clinically homogeneous asthma subphenotypes in a diverse s...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-018-0367-5
更新日期:2018-05-31 00:00:00
abstract:BACKGROUND:Balanced reciprocal chromosomal translocations (RCTs) are the ones of the most common structural aberrations in the population, with an incidence of 1:625. RCT carriers usually do not demonstrate changes in phenotype, except when the translocation results in gene interruption. However, these people are at ri...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-018-0384-4
更新日期:2018-08-20 00:00:00
abstract:BACKGROUND:One of the major goals of genomic medicine is the identification of causal genomic variants in a patient and their relation to the observed clinical phenotypes. Prioritizing the genomic variants by considering only the genotype information usually identifies a few hundred potential variants. Narrowing it dow...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-018-0372-8
更新日期:2018-07-06 00:00:00
abstract:BACKGROUND:A clinical overlap exists between mosaic Neurofibromatosis Type 2 and sporadic Schwannomatosis conditions. In these cases a molecular analysis of tumors is recommended for a proper genetic diagnostics. This analysis is challenged by the fact that schwannomas in both conditions bear a somatic double inactivat...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-015-0076-2
更新日期:2015-01-24 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:To explore long-non-coding RNA (lncRNA), microRNA (miRNA) and messenger RNA (mRNA) expression profiles and their biological functions in the urine samples in calcium oxalate (CaOx) patients. METHODS:Five CaOx kidney stone patients were recruited in CaOx stone group and six healthy people were included as co...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-019-0502-y
更新日期:2019-04-29 00:00:00
abstract:BACKGROUND:Gulf War Illness (GWI) is a complex multi-symptom disorder that affects up to one in three veterans of this 1991 conflict and for which no effective treatment has been found. Discovering novel treatment strategies for such a complex chronic illness is extremely expensive, carries a high probability of failur...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-015-0111-3
更新日期:2015-07-09 00:00:00
abstract:BACKGROUND:Phelan-McDermid syndrome (PMS, OMIM#606232), or 22q13 deletion syndrome, is a rare genetic disorder caused by deletion of the distal long arm of chromosome 22 with a variety of clinical features that display considerably heterogeneous degrees of severity. The SHANK3 gene is understood to be the critical gene...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-020-00802-0
更新日期:2020-10-06 00:00:00
abstract:BACKGROUND:Birt-Hogg-Dubé syndrome (BHD) is an autosomal dominant disorder caused by germline mutations in the folliculin gene (FLCN). Nearly 150 pathogenic mutations have been identified in FLCN. The most frequent pattern is a frameshift mutation within a coding exon. In addition, splice-site mutations have been repor...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-018-0359-5
更新日期:2018-05-02 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: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:Preterm birth (PTB), defined as infant delivery before 37 weeks of completed gestation, results from the interaction of both genetic and environmental components and constitutes a complex multifactorial syndrome. Transcriptome analysis of PTB has proven challenging because of the multiple causes of PTB and t...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-019-0498-3
更新日期:2019-04-01 00:00:00
abstract:BACKGROUND:The HIV viral genome mutates at a high rate and poses a significant long term health risk even in the presence of combination antiretroviral therapy. Current methods for predicting a patient's response to therapy rely on site-directed mutagenesis experiments and in vitro resistance assays. In this bioinforma...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/1755-8794-2-47
更新日期:2009-07-23 00:00:00
abstract:BACKGROUND:Intra-tumor heterogeneity stems from genetic, epigenetic, functional, and environmental differences among tumor cells. A major source of genetic heterogeneity comes from DNA sequence differences and/or whole chromosome and focal copy number variations (CNVs). Whole chromosome CNVs are caused by chromosomal i...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-019-0532-5
更新日期:2019-05-31 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:Glaucoma is the largest cause of irreversible blindness affecting more than 60 million people globally. The disease is defined as a gradual loss of peripheral vision due to death of Retinal Ganglion Cells (RGC). The RGC death is largely influenced by the rate of aqueous humor production by ciliary processes ...
journal_title:BMC medical genomics
pub_type: 杂志文章
doi:10.1186/s12920-016-0177-6
更新日期:2016-03-22 00:00:00