AI Article Synopsis

  • Observational studies suggest a link between inflammatory bowel disease (IBD) and psoriasis, but the genetic and causal aspects of this relationship are not well understood.
  • * A two-sample Mendelian Randomization analysis revealed that genetically predicted IBD and Crohn's disease (CD) increase the risk of psoriasis and its subtypes, with a unidirectional relationship where psoriasis can also increase IBD risk.
  • * Eight candidate genetic variants and risk genes associated with the shared genetic basis of IBD and psoriasis were identified, which could help improve clinical strategies for treatment.*

Article Abstract

Background: Observational studies have suggested an association between inflammatory bowel disease [IBD] and psoriasis. However, the detailed genetic basis, causality, and direction of this association remain unclear.

Methods: Bidirectional two-sample Mendelian Randomization [MR] analysis was conducted using summary statistics from published genome-wide association studies. Bayesian Colocalization and multivariable MR [MVMR] analyses were performed to identify candidate variants and risk genes involved in the shared genetic basis between IBD, psoriasis, and their subtypes.

Results: Genetically predicted IBD and Crohn's disease [CD] were associated with an increased risk of psoriasis, psoriasis vulgaris [PsV], and psoriatic arthritis [PsA] (IBD on psoriasis: pooled odds ratio [OR] 1.09, 95% confidence interval [CI] 1.04-1.14,  = .0001; CD on psoriasis: pooled OR 1.10, 95% CI 1.06-1.15,  < .0001) and vice versa (psoriasis on IBD: pooled OR 1.11, 95%CI 1.02-1.21), whereas CD only exhibited a unidirectional association with psoriasis. Colocalization analysis revealed eight candidate genetic variants and risk genes (including LINC00824, CDKAL1, IL10, IL23R, DNAJC27, LPP, RUNX3, and RGS14) associated with a shared genetic basis. Among these, IL23R, DNAJC27, LPP, and RGS14 were further validated by MVMR analysis.

Conclusion: Our findings indicated bidirectional causal associations between IBD and psoriasis (including PsV and PsA), which were attributed primarily to CD rather than Ulcerative colitis [UC]. Furthermore, we identified several candidate variants and risk genes involved in the shared genetic basis of IBD and psoriasis. Acquiring a better understanding of the shared genetic architecture underlying IBD and psoriasis would help improve clinical strategies.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10836255PMC
http://dx.doi.org/10.1080/07853890.2023.2281658DOI Listing

Publication Analysis

Top Keywords

mendelian randomization
8
bayesian colocalization
8
association inflammatory
8
inflammatory bowel
8
bowel disease
8
genetic basis
8
ibd psoriasis
8
psoriasis pooled
8
psoriasis
7
integrated analysis
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!