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1.  Study of the association between –403G/A and –28C/G RANTES gene polymorphisms and asthma in Lebanon 
Annals of Thoracic Medicine  2012;7(1):16-20.
CONTEXT:
Asthma is a complex inflammatory condition often associated with bronchial hyper reactivity and atopy. Genetic and environmental factors are implicated in the etiopathogenesis of asthma. Regulated upon Activation Normal T- cell Expressed and Secreted (RANTES) is a CC chemokine responsible for the recruitment of inflammatory cells, suggesting a possible role for this chemokine in asthma. Both -403A and -28G alleles of the RANTES promoter region were found to be associated with asthma/atopy in some but not all studies.
AIM:
The purpose of this study was to investigate the genetic influence of -403A and -28G alleles of the RANTES promoter region on the development of asthma in Lebanon.
SETTINGS AND DESIGN:
This case control study was conducted at Makassed Hospital, Beirut on 40 asthmatic patients and 38 healthy controls.
METHODS:
RANTES gene polymorphisms -403G/A and -28C/G alleles were genotyped using PCR-RFLP.
RESULTS:
No significant differences in allele or genotype frequencies for the RANTES gene polymorphisms between asthmatic patients and controls were found. The difference of the -403 GA genotype frequency between patients and controls was not statisti-cally significant; (OR=0.8, 95% CI=0.2-2.3, P=0.8). Similarly, the difference of the A-allele frequencies between patients and con-trols was not significant (OR=0.824, CI=0.3–2.2, P=0.7).
CONCLUSIONS:
Our data show that RANTES gene promoter polymorphisms are not associated with asthma susceptibility in the Lebanese population.
doi:10.4103/1817-1737.91558
PMCID: PMC3277035  PMID: 22347345
Asthma; Lebanon; polymorphism; RANTES

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