Rl. Murphy et al., Treatment with amprenavir alone or amprenavir with zidovudine and lamivudine in adults with human immunodeficiency virus infection, J INFEC DIS, 179(4), 1999, pp. 808-816
Amprenavir is a human immunodeficiency virus (HIV) protease inhibitor with
a favorable; pharmacokinetic profile and good in vitro activity. Ninety-two
lamivudine- and protease inhibitor-naive individuals with greater than or
equal to 50 CD4 cells/mm(3) and greater than or equal to 5000 HN RNA copies
/mL were assigned amprenavir (1200 mg) alone or with zidovudine (300 mg) pl
us lamivudine (150 mg), all given every 12 h. After a median follow-up of s
s days, the findings of a planned interim review resulted in termination of
the amprenavir monotherapy arm. Among 85 subjects with confirmed plasma HI
V RNA determination, 15 pf 42 monotherapy versus 1 of 43 triple-therapy sub
jects had an HIV RNA increase above basline or 1 log(10) above nadir (P=.00
01). For subjects taking triple therapy at 24 weeks, the median decrease in
HIV RNA was 2.04 log(10) copies/mL, and 17 (63%) of 27 evaluable subjects
had <500 HIV RNA copies/mL;. Treatment: with amprenavir, zidovudine, and la
mivudine together reduced he levels of HIV RNA significantly more than did
amprenavir monotherapy.