What role does ADH1B play in Allergie?

The role of ADH1B in allergies is not well established. ADH1B encodes an alcohol dehydrogenase primarily involved in ethanol metabolism. Some observational studies have suggested associations between certain ADH1B variants and altered risk of asthma or atopic dermatitis, but findings are inconsistent, often population-specific, and effect sizes are small. Proposed mechanisms involve acetaldehyde accumulation or immune modulation, but functional evidence is lacking. The provided context (MC4R, FUT3, microbiome diversity, allergy test article) does not address ADH1B. Therefore, the evidence level is 'unclear'. Direct-to-consumer genetic tests claiming to predict allergy risk via ADH1B are not clinically validated. For allergy assessment, standard IgE testing and medical evaluation remain the appropriate approach.