rs2040704
— RAD50 RAD50/IL13 5q31 Atopic March Locus
Intronic variant in the RAD50/TH2LCRR region at 5q31.1 that tags an enhancer hub coordinating IL-4, IL-5, and IL-13 expression; the G allele is associated with elevated serum IgE and increased susceptibility to the atopic march (eczema → food allergy → asthma → allergic rhinitis) through amplified Th2 cytokine output
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