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The psoriasis genetics as a model of complex disease
Emiliano Giardina1, Cecilia Sinibaldi, Giuseppe Novelli
1Centre of Excellence for Genomic Risk Assessment in Multifactorial and Complex Diseases, School of Medicine, Tor Vergata University of Rome, Rome, Italy.
Current Drug Targets. Inflammation and Allergy
|June 8, 2004
Summary
Psoriasis is a common, chronic inflammatory skin disease with varying prevalence across global populations, suggesting both genetic and environmental factors contribute to its heritability. Research focuses on understanding its polygenic inheritance and identifying specific genes for novel therapeutic targets.
Area of Science:
- Dermatology
- Genetics
- Epidemiology
Background:
- Psoriasis is a prevalent, chronic inflammatory skin condition affecting roughly 2% of Caucasians.
- Disease prevalence varies significantly across different ethnic groups, indicating complex etiological factors.
- Evidence from population and twin studies strongly suggests psoriasis is a heritable disorder.
Purpose of the Study:
- To review current genetic approaches to understanding psoriasis.
- To discuss findings from relevant genetic studies and their interpretations.
- To explore future research directions in psoriasis genetics.
Main Methods:
- Review of population-based and twin studies on psoriasis heritability.
- Analysis of genome-wide scans identifying potential psoriasis susceptibility loci.
- Discussion of candidate gene studies in psoriasis.
Main Results:
- Psoriasis exhibits a polygenic mode of inheritance with variable penetrance.
- Numerous chromosomal regions (loci) have been implicated through genome-wide scans.
- Multiple candidate genes have been proposed, though none are definitively established as primary drivers.
Conclusions:
- Understanding the genetic basis of psoriasis is crucial for advancing disease comprehension.
- Identifying specific genetic factors will likely reveal novel, disease-specific biological pathways.
- Further genetic research holds promise for developing targeted therapies for psoriasis.