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PTGER4 modulating variants in Crohn's disease.
Matthias Prager1, Janine Büttner, Carsten Büning
1Department of Hepatology and Gastroenterology, Universitätsmedizin Berlin, Charité Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany.
A specific PTGER4 gene variant, rs7720838, is linked to increased Crohn's disease susceptibility. This variant may also indicate a higher risk for developing stricturing disease behavior in Crohn's disease patients.
Area of Science:
- Genetics and Genomics
- Gastroenterology
- Immunology
Background:
- Genetic variants influencing prostaglandin receptor 4 (PTGER4) expression have been linked to Crohn's disease (CD).
- The clinical significance and specific associations of these PTGER4 variants require further investigation.
Purpose of the Study:
- To analyze the association of PTGER4 variants (rs4495224 and rs7720838) with Crohn's disease (CD) and ulcerative colitis (UC) in a German cohort.
- To investigate the potential link between these variants and specific clinical phenotypes in CD patients.
Main Methods:
- Genotyping of PTGER4 variants rs4495224 and rs7720838 in 475 CD patients, 293 UC patients, and 467 healthy controls.
- Correlation of variant data with NOD2 genotyping and clinical characteristics, including disease behavior.
Main Results:
- The rs7720838 variant showed a significant association with CD (T allele overrepresentation, p=0.0058).
- Presence of the rs7720838 T allele was associated with stricturing disease behavior in CD patients (p=0.03).
- Combined presence of rs7720838 and NOD2 mutant alleles further increased the risk for stricturing behavior (p=0.003).
Conclusions:
- The PTGER4 variant rs7720838 is associated with increased susceptibility to Crohn's disease.
- This variant may serve as a risk factor for developing stricturing disease behavior in CD.
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