RGD Reference Report - A polymorphism in the promoter region of the human interleukin-16 gene is not associated with asthma or atopy in an Australian population. - Rat Genome Database

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A polymorphism in the promoter region of the human interleukin-16 gene is not associated with asthma or atopy in an Australian population.

Authors: Akesson, LS  Duffy, DL  Phelps, SC  Thompson, PJ  Kedda, MA 
Citation: Akesson LS, etal., Clin Exp Allergy. 2005 Mar;35(3):327-31.
RGD ID: 5024935
Pubmed: PMID:15784111   (View Abstract at PubMed)
DOI: DOI:10.1111/j.1365-2222.2005.02189.x   (Journal Full-text)

BACKGROUND: IL-16 is an immunomodulatory cytokine whose expression is increased in the bronchial mucosa, bronchoalveolar lavage fluid and induced sputum of asthmatic patients. It has been suggested that IL-16 has a regulatory role in the pathophysiology of asthma. A single-nucleotide polymorphism (T(-295)C) has been described in the promoter region of the gene and it has been hypothesized that this polymorphism may be associated with altered levels of IL-16 expression, and account for the increased levels of IL-16 seen in the asthmatic airway. OBJECTIVE: To determine the association between the T(-295)C promoter polymorphism and asthma, disease severity and atopy in a large Australian Caucasian population. METHODS: We used PCR and restriction fragment length polymorphism analysis to establish the allele frequency of the T(-295)C promoter polymorphism in a random Australian Caucasian population (n=176) and to characterize the polymorphism in a large Australian Caucasian population of mild (n=273), moderate (n=230) and severe (n=77) asthmatic patients, and non-asthmatic controls (n=455). Genotype association analyses were performed using chi(2) tests. RESULTS: The polymorphic C allele was present in 19% of the asthmatic population and 21% of the non-asthmatic population. There was no association between the polymorphism and asthma (P=0.153) nor with asthma severity (P=0.417) or atopy (P=0.157) in this population. CONCLUSION: Although it has been hypothesized that the T(-295)C promoter polymorphism may be associated with increased IL-16 gene expression, it is not associated with asthma, disease severity or atopy in this Australian population.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
asthma no_associationIAGP 5024935DNA:SNP:promoter:-295T>C (human)RGD 
asthma no_associationISOIL16 (Homo sapiens)5024935; 5024935DNA:SNP:promoter:-295T>C (human)RGD 

Objects Annotated

Genes (Rattus norvegicus)
Il16  (interleukin 16)

Genes (Mus musculus)
Il16  (interleukin 16)

Genes (Homo sapiens)
IL16  (interleukin 16)


Additional Information