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Distribution of IL28B genotype (rs12980275) by treatment eligibility. Segments 1 and 2 represent subgroups of patients considered ineligible for antiviral treatment. Of these, approximately 40% had a favorable IL28B genotype (segment 1). One fourth of the patients had a favorable genotype and also was eligible for treatment (segment 3). However, a significant proportion of patients without any major treatment exclusion had an unfavorable IL28B genotype (segment 4).
