Severe toxicity and polymerase-γ gene abnormalities in Malawian adults on stavudine-based antiretroviral therapy.

In a cohort study of Malawian adults who were followed up through their second year of stavudine-containing antiretroviral therapy, we sequenced the polymerase-γ gene (POLG) of 10 of the 14 patients with the most severe stavudine side effects. No mutations were observed, suggesting that monogenic POLG mutations are not a common pathogenic determinant of severe stavudine-associated mitochondrial toxicity in Malawians.

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