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Review
. 2006;10(6):353-66.
doi: 10.1007/BF03256212.

G-protein-coupled receptors and asthma endophenotypes: the cysteinyl leukotriene system in perspective

Miles D Thompson  1 , Jun Takasaki, Valérie Capra, G Enrico Rovati, Kathy A Siminovitch, W McIntyre Burnham, Thomas J Hudson, Yohan Bossé, David E C Cole
Affiliations
Review

G-protein-coupled receptors and asthma endophenotypes: the cysteinyl leukotriene system in perspective

Miles D Thompson et al. Mol Diagn Ther. 2006.

Abstract

Genetic variation in specific G-protein coupled receptors (GPCRs) is associated with a spectrum of respiratory disease predispositions and drug response phenotypes. Although certain GPCR gene variants can be disease-causing through the expression of inactive, overactive, or constitutively active receptor proteins, many more GPCR gene variants confer risk for potentially deleterious endophenotypes. Endophenotypes are traits, such as bronchiole hyperactivity, atopy, and aspirin intolerant asthma, which have a strong genetic component and are risk factors for a variety of more complex outcomes that may include disease states. GPCR genes implicated in asthma endophenotypes include variants of the cysteinyl leukotriene receptors (CYSLTR1 and CYSLTR2), and prostaglandin D2 receptors (PTGDR and CRTH2), thromboxane A2 receptor (TBXA2R), beta2-adrenergic receptor (ADRB2), chemokine receptor 5 (CCR5), and the G protein-coupled receptor associated with asthma (GPRA). This review of the contribution of variability in these genes places the contribution of the cysteinyl leukotriene system to respiratory endophenotypes in perspective. The genetic variant(s) of receptors that are associated with endophenotypes are discussed in the context of the extent to which they contribute to a disease phenotype or altered drug efficacy.

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