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HIV Med. 2008 May;9(5):294-9. doi: 10.1111/j.1468-1293.2008.00563.x.

Standard-dose efavirenz vs. standard-dose nevirapine in antiretroviral regimens among HIV-1 and tuberculosis co-infected patients who received rifampicin.

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  • 1Bamrasnaradura Infectious Diseases Institute, Ministry of Public Health, Nonthaburi, Thailand.



There is limited comparative data between efavirenz (EFV) 600 mg/day and nevirapine (NVP) 400 mg/day-based antiretroviral therapy (ART) among HIV-1 patients with tuberculosis (TB) and receiving rifampicin.


A retrospective cohort study was conducted in all ART-naïve patients who were receiving rifampicin between January 2002 and December 2005.


Of 188 patients, 77 and 111 patients were initiated on EFV-based ART (EFV group) and NVP-based ART (NVP group), respectively. Overall, median [interquartile range (IQR)] CD4 count was 36 (15-77) cells/microL and median (IQR) viral load was 5.6 (5.2-5.9) HIV-1 RNA log copies/mL. At 48 weeks, 77.9% (60/77) in the EFV group and 67.6% (75/111) in the NVP group achieved HIV-1 RNA <50 copies/mL (P=0.140, odds ratio=0.590, 95% confidence interval=0.302-1.153). At 24 and 48 weeks, respective median CD4 counts were 174 and 254 cells/muL in the EFV group and 156 and 218 cells/microL in the NVP group (P>0.05). By binary logistic regression, treatment group was not associated with HIV-1 RNA <50 copies/mL (P>0.05). No patient in the EFV group and eight (7.2%) patients in the NVP group discontinued ART because of adverse reactions (P=0.084).


For HIV-TB co-infected patients who receive rifampicin, efficacy of 600 mg EFV-based and 400 mg NVP-based ART may be similar, although adverse events tend to be higher in NVP-based ART.

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