Related Experiment Videos
Gene polymorphism in Netherton and common atopic disease.
A J Walley1, S Chavanas, M F Moffatt
1Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford OX3 7BN, UK.
Nature Genetics
|September 7, 2001
Summary
Researchers identified a genetic link between Netherton disease and common allergies like atopic dermatitis (AD) and asthma. A specific variant in the SPINK5 gene (encoding LEKTI) is associated with increased allergy risk.
Area of Science:
- Genetics
- Immunology
- Dermatology
Background:
- Atopic dermatitis (AD) and asthma involve IgE-mediated allergic responses to allergens, often proteinases.
- Genetic loci for atopy are linked to chromosomal regions like 5q31.
- Netherton disease, a rare skin disorder, universally presents with atopy.
Purpose of the Study:
- To investigate the genetic basis of atopy and its association with Netherton disease.
- To identify specific gene variants within SPINK5 linked to common allergic conditions.
Main Methods:
- Identification of six coding polymorphisms in the SPINK5 gene.
- Association analysis of SPINK5 variants with atopy and AD in family cohorts.
Main Results:
- A specific SPINK5 variant (Glu420-->Lys) demonstrated a significant association with atopy and AD.
- This finding was validated in two independent family panels.
Conclusions:
- The SPINK5 gene, encoding the serine proteinase inhibitor LEKTI, plays a role in common allergic diseases.
- A previously unrecognized pathway involving LEKTI is implicated in the development of atopy.