Filaggrin mutations in a Western siberian population and their association with atopic dermatitis in children.

We determined the frequencies of null mutations of the FLG gene--2282del4, R501X, R2447X, 3702delG, S3247X, and the 12-repeat allele (rs12730241)--among 460 Caucasians of the city of Novosibirsk, Russia. The frequency was 17.7% for rs12730241, 2.