Using response to a standardized treatment to identify phenotypes for genetic studies of chronic rhinosinusitis.

Objectives: Studies of the genetics of chronic rhinosinusitis offer potential insights into the pathophysiology of this poorly understood condition. However, genetic studies are both expensive and time consuming-hence the importance of establishing beforehand the proper population and target genes. We wished to identify patient factors associated with a proposed definition of severe chronic rhinosinusitis to minimize heterogeneity and maximize the impact of genetic contributions.

Influence of leukotriene gene polymorphisms on chronic rhinosinusitis.

Background: Chronic rhinosinusitis (CRS) is increasingly viewed as an inflammatory condition of the sinonasal mucosa interacting with bacteria and/or fungi. However, factors conferring susceptibility to disease remain unknown. Advances in genomics offer powerful tools to explore this disorder.