A partial loss-of-function variant in STAT6 protects against type 2 asthma.

Background: Signal transducer and activator of transcription 6 (STAT6) is central to type 2 (T2) inflammation, and common noncoding variants at the STAT6 locus associate with various T2 inflammatory traits, including diseases, and its pathway is widely targeted in asthma treatment.

Objective: We sought to test the association of a rare missense variant in STAT6, p.L406P, with T2 inflammatory traits, including the risk of asthma and allergic diseases, and to characterize its functional consequences in cell culture.

[Utility of serum tryptase in Emergency Department patients with possible anaphylaxis].

Background Diagnosing anaphylaxis is often straightforward but can be challenging if the presentation is atypical. In patients with atypical symptoms suspected to be due to an acute allergic reaction, s-tryptase can give additional diagnostic information. Measuring s-tryptase is also helpful in diagnosing mastocytosis.

Indoor environment in three North European cities in relationship to atopy and respiratory symptoms.

Background: In the European Community Respiratory Health Survey (ECRHS) I, the lowest prevalence of asthma and atopy was found in Reykjavík (Iceland) and Tartu (Estonia). The aim of this study was to compare home environments in Reykjavík and Tartu to a town with a higher prevalence of asthma and atopy (Uppsala, Sweden) in an attempt to identify factors in the indoor environment that could explain these differences.

Method: A random sample of 129 ECRHS II participants was included in this analysis at each of the three study centres.