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A systems biology approach for pathway level analysis

Open access
Draghici, Sorin, Khatri, Purvesh, Tarca, Adi Laurentiu, Amin, Kashyap, Done, Arina, Voichita, Calin, Georgescu, Constantin, Romero, Roberto·2007·Genome Research

Abstract

A common challenge in the analysis of genomics data is trying to understand the underlying phenomenon in the context of all complex interactions taking place on various signaling pathways. A statistical approach using various models is universally used to identify the most relevant pathways in a given experiment. Here, we show that the existing pathway analysis methods fail to take into consideration important biological aspects and may provide incorrect results in certain situations. By using a systems biology approach, we developed an impact analysis that includes the classical statistics but also considers other crucial factors such as the magnitude of each gene’s expression change, their type and position in the given pathways, their interactions, etc. The impact analysis is an attempt to a deeper level of statistical analysis, informed by more pathway-specific biology than the existing techniques. On several illustrative data sets, the classical analysis produces both false positives and false negatives, while the impact analysis provides biologically meaningful results. This analysis method has been implemented as a Web-based tool, Pathway-Express, freely available as part of the Onto-Tools (http://vortex.cs.wayne.edu).

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Metadata

Authors
Draghici, S., Khatri, P., Tarca, A. L., Amin, K., Done, A., Voichita, C., Georgescu, C., & Romero, R.
Venue
Genome Research
Published
2007-09-04
Volume
17
Issue
10
Pages
1537-1545
ISSN
1088-9051 (ISSN-L)
OpenAlex
W2154972152
Cited by
1,249
References
47
Type
posted content
Language
en
Open access
bronze

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CoChat. (2026). Citation check: A systems biology approach for pathway level analysis. https://app.cochat.ai/papers/10.1101/gr.6202607
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Draghici, S., Khatri, P., Tarca, A. L., Amin, K., Done, A., Voichita, C., Georgescu, C., & Romero, R. (2007). A systems biology approach for pathway level analysis. Genome Research. https://doi.org/10.1101/gr.6202607

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