Biomedical Hypothesis Generation by Text Mining and Gene Prioritization
Ingrid Petric, Balazs Ligeti, Balazs Gyorffy and Sandor Pongor
Affiliation: Centre for Systems and Information Technologies, University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia.
Text mining methods can facilitate the generation of biomedical hypotheses by suggesting novel associations
between diseases and genes. Previously, we developed a rare-term model called RaJoLink (Petric et al, J. Biomed.
Inform. 42(2): 219-227, 2009) in which hypotheses are formulated on the basis of terms rarely associated with a
target domain. Since many current medical hypotheses are formulated in terms of molecular entities and molecular
mechanisms, here we extend the methodology to proteins and genes, using a standardized vocabulary as well as a
gene/protein network model. The proposed enhanced RaJoLink rare-term model combines text mining and gene prioritization
approaches. Its utility is illustrated by finding known as well as potential gene-disease associations in ovarian
cancer using MEDLINE abstracts and the STRING database.
Keywords: Biomedical hypothesis generation, disease gene prediction, gene prioritization, ovarian cancer, text mining.
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