GLI1 Variation and Inflammatory Bowel Disease
Author Information
Author(s): Charlie W. Lees, William J. Zacharias, Mark Tremelling, Colin L. Noble, Elaine R. Nimmo, Albert Tenesa, Jennine Cornelius, Leif Torkvist, John Kao, Susan Farrington, Hazel E. Drummond, Gwo-Tzer Ho, Ian D. R. Arnott, Henry D. Appelman, Lauri Diehl, Harry Campbell, Malcolm G. Dunlop, Miles Parkes, Sarah E. M. Howie, Deborah L. Gumucio, Jack Satsangi
Primary Institution: University of Edinburgh
Hypothesis
Is a variant of the GLI1 gene associated with inflammatory bowel disease susceptibility?
Conclusion
Reduced GLI1 function predisposes individuals to a heightened inflammatory response in the gut, potentially leading to inflammatory bowel disease.
Supporting Evidence
- GLI1 was associated with IBD, predominantly UC, in Scotland and England.
- A specific variant of GLI1 was found to have reduced transcriptional activity.
- Gli1+/lacZ mice showed increased susceptibility to DSS-induced colitis.
- Pro-inflammatory cytokines were significantly up-regulated in Gli1+/lacZ mice after DSS treatment.
- Meta-analysis confirmed the association of GLI1 variant rs2228226 with IBD in Northern European populations.
Takeaway
Scientists found a gene change that makes it harder for the body to control inflammation in the gut, which can lead to diseases like ulcerative colitis.
Methodology
The study examined GLI1 gene variations in IBD patients and healthy controls using a gene-wide haplotype-tagging approach.
Potential Biases
Potential bias due to population stratification and the reliance on self-reported data for patient demographics.
Limitations
The study primarily focused on heterozygous mice and did not explore the effects in homozygous null mutant animals.
Participant Demographics
The study included over 5,000 individuals from Northern Europe, predominantly white and non-Jewish.
Statistical Information
P-Value
p = 0.0002
Confidence Interval
1.09–1.31
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website