Prospective HLA-B*5701 screening and abacavir hypersensitivity: a single centre experience

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Suspected hypersensitivity is the main reason for the early discontinuation of abacavir. After the observation that the risk of hypersensitivity correlated with ethnicity, the presence of the HLA allele B*5701 was found to be the strongest retrospective predictor of hypersensitivity. Two prospective cohorts have since demonstrated a significant reduction in abacavir hypersensitivity rates with the use of prospective human leukocyte antigen screening. We describe our experience of prospective HLA-B*5701 testing and the impact on rates of abacavir hypersensitivity.

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