From SNP to Transcriptional Mechanism: A Model for FRMD3 in Diabetic Nephropathy
2013
Genome wide association studies (GWAS) have proven to be highly effective at defining causal relationships between single nucleotide polymorphisms (SNP) and clinical phenotypes in complex diseases. Establishing a mechanistic link between a non-coding SNP and the clinical outcome is a significant hurdle in translating associations into biological insight. We demonstrate an approach to assess the functional context of a diabetic nephropathy (DN) associated SNP located in the promoter region of the gene FRMD3 . The approach integrates pathway analyses with transcriptional regulatory pattern based promoter modeling and allows the identification of a transcriptional framework impacted by the DN-associated SNP in the FRMD3 promoter. This framework provides a testable hypothesis for mechanisms of genomic variation and transcriptional regulation in the context of DN. Our model proposes a possible transcriptional link through which the polymorphism in the FRMD3 promoter could influence transcriptional regulation within the bone morphogenetic protein ( BMP ) signaling pathway. These findings provide the rationale to interrogate the biological link between FRMD3 and the BMP pathway, and serve as an example of functional genomics-based hypothesis generation.
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