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Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
Published on: June 21, 2018
CLC- a novel susceptibility gene for allergic rhinitis?
1Department of Otorhinolaryngology, Karolinska Institutet, Huddinge, Sweden.
Genetic variations in the Charcot-Leyden crystal protein (CLC) gene are associated with allergic rhinitis. This finding supports a recessive inheritance model and links genetic factors to altered protein levels in allergic individuals.
Area of Science:
- Immunology
- Genetics
- Allergy Research
Background:
- Previous proteomic studies identified differentially expressed proteins in allergic rhinitis patients.
- Proteins like S100A7, prolactin-inducible protein (PIP), WNT2B, Charcot-Leyden crystal protein (CLC), and PLUNC were noted.
- The study aimed to explore genetic variations in these identified genes.
Purpose of the Study:
- To investigate potential associations between genetic variations and allergic rhinitis.
- To examine single nucleotide polymorphisms (SNPs) within the PIP, WNT2B, CLC, and PLUNC genes.
Main Methods:
- Collected peripheral blood from 251 allergic rhinitis patients and 386 healthy controls.
- Genotyped 39 SNPs across PIP, WNT2B, CLC, and PLUNC genes.
- Analyzed 12 additional SNPs for CLC, focusing on genotype frequencies and associations.
Main Results:
- Significant associations were found with 10 out of 22 investigated SNPs in the CLC gene.
- Minor allele homozygotes in CLC were more prevalent in allergic individuals.
- Specific CLC SNPs correlated with birch and grass allergy severity in skin prick tests.
Conclusions:
- Genetic variation within the CLC gene is significantly associated with allergic rhinitis.
- The observed genetic pattern suggests a recessive inheritance model for CLC.
- Findings align with previously observed altered protein levels in allergic rhinitis patients.
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