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Distribution of symptoms according to the DAO deficiency genetic risk score (DAO Score), consisting of the sum of all risk alleles by giving a rating of 0 for the absence of any DAO deficiency-associated allele, 1 for the presence of one DAO deficiency-associated allele (heterozygosis) and 2 for the presence of two DAO deficiency-associated alleles (homozygosis) at each of the positions analyzed in the AOC1 gene.
