Grouping Gene Ontology terms to improve the assessment of gene set enrichment in microarray data
<p>Abstract</p> <p>Background</p> <p>Gene Ontology (GO) terms are often used to assess the results of microarray experiments. The most common way to do this is to perform Fisher's exact tests to find GO terms which are over-represented amongst the genes declared to...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
BMC
2006-10-01
|
Series: | BMC Bioinformatics |
Online Access: | http://www.biomedcentral.com/1471-2105/7/426 |
id |
doaj-c3802603fd3f4d7a82f5e0fc2879abdd |
---|---|
record_format |
Article |
spelling |
doaj-c3802603fd3f4d7a82f5e0fc2879abdd2020-11-24T21:44:28ZengBMCBMC Bioinformatics1471-21052006-10-017142610.1186/1471-2105-7-426Grouping Gene Ontology terms to improve the assessment of gene set enrichment in microarray dataGrieve Ian CLewin Alex<p>Abstract</p> <p>Background</p> <p>Gene Ontology (GO) terms are often used to assess the results of microarray experiments. The most common way to do this is to perform Fisher's exact tests to find GO terms which are over-represented amongst the genes declared to be differentially expressed in the analysis of the microarray experiment. However, due to the high degree of dependence between GO terms, statistical testing is conservative, and interpretation is difficult.</p> <p>Results</p> <p>We propose testing groups of GO terms rather than individual terms, to increase statistical power, reduce dependence between tests and improve the interpretation of results. We use the publicly available package POSOC to group the terms. Our method finds groups of GO terms significantly over-represented amongst differentially expressed genes which are not found by Fisher's tests on individual GO terms.</p> <p>Conclusion</p> <p>Grouping Gene Ontology terms improves the interpretation of gene set enrichment for microarray data.</p> http://www.biomedcentral.com/1471-2105/7/426 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Grieve Ian C Lewin Alex |
spellingShingle |
Grieve Ian C Lewin Alex Grouping Gene Ontology terms to improve the assessment of gene set enrichment in microarray data BMC Bioinformatics |
author_facet |
Grieve Ian C Lewin Alex |
author_sort |
Grieve Ian C |
title |
Grouping Gene Ontology terms to improve the assessment of gene set enrichment in microarray data |
title_short |
Grouping Gene Ontology terms to improve the assessment of gene set enrichment in microarray data |
title_full |
Grouping Gene Ontology terms to improve the assessment of gene set enrichment in microarray data |
title_fullStr |
Grouping Gene Ontology terms to improve the assessment of gene set enrichment in microarray data |
title_full_unstemmed |
Grouping Gene Ontology terms to improve the assessment of gene set enrichment in microarray data |
title_sort |
grouping gene ontology terms to improve the assessment of gene set enrichment in microarray data |
publisher |
BMC |
series |
BMC Bioinformatics |
issn |
1471-2105 |
publishDate |
2006-10-01 |
description |
<p>Abstract</p> <p>Background</p> <p>Gene Ontology (GO) terms are often used to assess the results of microarray experiments. The most common way to do this is to perform Fisher's exact tests to find GO terms which are over-represented amongst the genes declared to be differentially expressed in the analysis of the microarray experiment. However, due to the high degree of dependence between GO terms, statistical testing is conservative, and interpretation is difficult.</p> <p>Results</p> <p>We propose testing groups of GO terms rather than individual terms, to increase statistical power, reduce dependence between tests and improve the interpretation of results. We use the publicly available package POSOC to group the terms. Our method finds groups of GO terms significantly over-represented amongst differentially expressed genes which are not found by Fisher's tests on individual GO terms.</p> <p>Conclusion</p> <p>Grouping Gene Ontology terms improves the interpretation of gene set enrichment for microarray data.</p> |
url |
http://www.biomedcentral.com/1471-2105/7/426 |
work_keys_str_mv |
AT grieveianc groupinggeneontologytermstoimprovetheassessmentofgenesetenrichmentinmicroarraydata AT lewinalex groupinggeneontologytermstoimprovetheassessmentofgenesetenrichmentinmicroarraydata |
_version_ |
1725910078257627136 |