Related Experiment Video
Updated: Feb 9, 2026
12:39
A Novel Bayesian Change-point Algorithm for Genome-wide Analysis of Diverse ChIPseq Data Types
Published on: December 10, 2012
11.7K
A Bayesian Gene-Based Genome-Wide Association Study Analysis of Osteosarcoma Trio Data Using a Hierarchically
Yi Yang1, Saonli Basu1, Lisa Mirabello2
1Division of Biostatistics, University of Minnesota, Minneapolis, MN, USA.
Cancer Informatics
|May 31, 2018
Summary
This study identified 217 significant genes linked to osteosarcoma, a rare bone cancer. Findings suggest potential genetic links involving TP53 and hormonal signaling pathways.
Area of Science:
- Genetics
- Oncology
- Epidemiology
Background:
- Osteosarcoma is the most common primary bone cancer in children and young adults.
- Growth spurts and height are suspected risk factors, but genetic causes remain understudied.
- The rare nature of osteosarcoma limits genetic research.
Purpose of the Study:
- To identify genetic risk factors for osteosarcoma.
- To investigate genetic associations using a family trio dataset.
- To leverage genome-wide association studies (GWAS) for novel insights.
Main Methods:
- Conducted a genome-wide association study (GWAS) on 209 osteosarcoma patient trios.
- Utilized a Bayesian gene-based GWAS approach with SNP-level summary statistics.
- Employed a hierarchically structured prior incorporating SNP-gene relationships for enhanced power and robustness.
Main Results:
- Identified 217 genes associated with genome-wide significance.
- Bayesian GWAS demonstrated higher power compared to SNP-level analysis.
- Pathway analysis implicated TP53, estrogen receptor signaling, xenobiotic metabolism, and osteoclast RANK signaling.
Conclusions:
- Osteosarcoma has significant genetic underpinnings.
- The identified genes and pathways offer new targets for research.
- Further investigation into TP53 and signaling pathways is warranted for understanding osteosarcoma etiology.
More Related Videos
Related Concept Videos
01:11Genome-wide Association Studies-GWAS
15.8K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
15.8K
03:21Genome Size and the Evolution of New Genes
9.2K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
9.2K
03:21Genome Size and the Evolution of New Genes
3.5K
3.5K
02:02Genomics
40.8K
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
40.8K
01:30Structure of a Gene
15.9K
A gene is the fundamental unit of heredity. Every individual has two copies of each gene, one inherited from each parent. Although most people contain the same genes, there is a small fraction that is slightly different amongst people. A gene with a small difference in its sequence of DNA bases forms different alleles, contributing to different phenotypes.
However, only 1% of the DNA is composed of genes that encode proteins; the rest, 99% is non-coding DNA. This non-coding DNA performs...
However, only 1% of the DNA is composed of genes that encode proteins; the rest, 99% is non-coding DNA. This non-coding DNA performs...
15.9K
01:26Size and Structure of Viral Genomes
807
Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
807