The risk allele is (G).
Note that the increased risk is not that great; median shedding rate was 16.7% for (G) allele carriers vs 12.0% when it was absent (= risk ratio for a dominant effect of 1.60), and the median lesional rate was 10.4% for (G) carriers vs 5.3% for non-carriers (risk ratio 2.16). [PMID 17624834]
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