Supplementation with omega-3 fatty acids in combination with dietary and exercise counseling was well tolerated and reduced fasting triglyceride levels in patients receiving antiretrovirals. To what extent the increase in low-density lipoprotein cholesterol levels observed in patients assigned this intervention is attributable to omega-3 fatty acid supplementation and whether this increase attenuates any benefit in lowering triglyceride levels is unclear. Given these results, further investigation of omega-3 fatty acid supplementation for the treatment of hypertriglyceridemia in HIV-infected patients is warranted.

Aim Genetic polymorphisms have the potential to influence drug metabolism and vary among ethnic groups. This study evaluated the correlation of genetic polymorphisms with nevirapine pharmacokinetics exposure in Malawians. Materials & methods CYP450 2B6, 2D6, 3A4 and 3A5, ABCB1 and constitutive androstane receptor and pregnane X receptor, were analyzed for polymorphisms in 26 subjects. Results Allele frequencies (variant) were: CYP2B6 514G>T (0.31) CYP2D6*4 (0.02); CYP2D6*17 (0.35); CYP3A4*1B (0.77); CYP3A5*3 (0.25); ABCB1 2677G>T (0.0), ABCB1 3435C>T (0.21), NR1I3 13711152T>C (0.02), NR1I2 44477T>C (0.10), NR1I2 63396C>T (0.33), NR1I2 6-bp indel (del: 0.17). CYP2B6 516G>T (non-wild-type/wild-type) correlated with nevirapine pharmacokinetic parameters; geometric mean ratios (95% CI): 1.75 (1.27–2.40) for area under the concentration time curve (AUC)0–12 h, 1.58 (1.03–2.42) for C0, and 0.53 (0.31–0.91) for clearance. In a multivariable model, nevirapine AUC increased by 1.5% per year of age (p < 0.0001), CYP2B6 516 T allele increased AUC by 92% (p < 0.0001), and CYP3A5*3 decreased AUC by 31% (p = 0.0027). Conclusion Allele frequencies were similar to other sub-Saharan African populations. The T allele for CYP2B6 516 was significantly associated with nevirapine exposure.