Geneticists in the US have identified a new gene uniquely linked to asthma in African Americans; a variant of the gene called PYHIN1 that is absent in European Americans. The new national collaboration also confirmed four other "trans-ethnic" asthma genes revealed in a European study published last year. The new study, reported in the 31 July online issue of Nature Genetics, is said to represent a significant advance in a national effort to locate the genetic roots of asthma...
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