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- W2616454883 abstract "WHO treatment guidelines recommend efavirenz in first-line antiretroviral therapy (ART). Efavirenz commonly causes early transient neuropsychiatric adverse events. We present 20 cases with severe encephalopathy accompanied by ataxia due to efavirenz toxicity.Consecutive HIV-infected adults taking efavirenz-containing ART admitted to Tshepong hospital, Klerksdorp, South Africa with ataxia and encephalopathy were included in this case series.We identified 20 women admitted to hospital with severe ataxia. All received efavirenz-based ART for a median of 2 years. All had severe ataxia and none had nystagmus. Eleven had features of encephalopathy. Median weight was 34 kg [interquartile range (IQR): 29.7-35.3]; median CD4 count 299 cells/mm (IQR: 258-300) and most (18 of 19) were virally suppressed. Eight patients had a record of prior weights and 7 of 8 showed significant weight loss with a median weight loss of 10.8 kg (IQR: 8-11.6). All cases had plasma efavirenz assays, 19 were supratherapeutic (more than twice the upper level of therapeutic range), and 15 had concentrations above the upper limit of assay detection. Ataxia resolved after withdrawal of efavirenz at a median time of 2 months (IQR: 1.25-4) and recurred in 2 of 3 patients when rechallenged. Admissions before diagnosis were frequent with 10 cases admitted previously. Three women died.Efavirenz toxicity may present with severe reversible ataxia often with encephalopathy years after its initiation, likely in genetic slow metabolizers. We recommend that patients whose weight is <40 kg receive lower doses of efavirenz and that therapeutic drug monitoring be considered, and efavirenz stopped in patients presenting with ataxia. Eight patients had a record of prior subsequent weights and 7 of 8 showed significant weight loss gain; median gain of 10.8 kg (IQR: 8-11.6)." @default.
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- W2616454883 date "2017-08-15" @default.
- W2616454883 modified "2023-10-03" @default.
- W2616454883 title "Brief Report: Late Efavirenz-Induced Ataxia and Encephalopathy: A Case Series" @default.
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- W2616454883 doi "https://doi.org/10.1097/qai.0000000000001451" @default.
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