We describe a 55-year-old HIV-1-infected male who developed severe dyslipidaemia (total cholesterol 600 mg/dl, triglycerides >5,000 mg/dl, high density lipoprotein <5 mg/dl) after raltegravir was added to his lopinavir/ritonavir-containing regimen. To our knowledge, this is the first reported case of severe dyslipidaemia associated with the addition of raltegravir to a lopinavir/ritonavir-based...