PT  - JOURNAL ARTICLE
AU  - M Oti
AU  - B Snel
AU  - M A Huynen
AU  - H G Brunner
TI  - Predicting disease genes using protein–protein interactions
AID  - 10.1136/jmg.2006.041376
DP  - 2006 Aug 01
TA  - Journal of Medical Genetics
PG  - 691--698
VI  - 43
IP  - 8
4099  - http://jmg.bmj.com/content/43/8/691.short
4100  - http://jmg.bmj.com/content/43/8/691.full
SO  - J Med Genet2006 Aug 01; 43
AB  - Background: The responsible genes have not yet been identified for many genetically mapped disease loci. Physically interacting proteins tend to be involved in the same cellular process, and mutations in their genes may lead to similar disease phenotypes. Objective: To investigate whether protein–protein interactions can predict genes for genetically heterogeneous diseases. Methods: 72 940 protein–protein interactions between 10 894 human proteins were used to search 432 loci for candidate disease genes representing 383 genetically heterogeneous hereditary diseases. For each disease, the protein interaction partners of its known causative genes were compared with the disease associated loci lacking identified causative genes. Interaction partners located within such loci were considered candidate disease gene predictions. Prediction accuracy was tested using a benchmark set of known disease genes. Results: Almost 300 candidate disease gene predictions were made. Some of these have since been confirmed. On average, 10% or more are expected to be genuine disease genes, representing a 10-fold enrichment compared with positional information only. Examples of interesting candidates are AKAP6 for arrythmogenic right ventricular dysplasia 3 and SYN3 for familial partial epilepsy with variable foci. Conclusions: Exploiting protein–protein interactions can greatly increase the likelihood of finding positional candidate disease genes. When applied on a large scale they can lead to novel candidate gene predictions.