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Session 33
Oral Abstract Presentations Clinical Trials in Resource-Limited Settings Session Day and Time: Thursday 4 - 6:15 pm Presentation Time: 5:45 Room: Ballroom C |
Background: Access to
antiretroviral therapy in resource-poor countries is
extremely limited by high costs and lack of infrastructures. Aim of this
project, coordinated by the Community of Sant’Egidio, is then the evaluation of
feasibility and impact of free-of-charge combination antiretroviral therapy
(CART) in a poor semi-rural area of Mozambique.
Methods: Prospective,
observational cohort study of HIV-patients (pts) recruited from Nov 2001 to Aug
2002, followed by outpatient and home-care service in Matola, Mozambique. Since
Feb 2002, CD4 and HIV-RNA are routinely measured; generic antiretrovirals (AZT
or d4T+3TC+Nevirapine [NVP] in combination tabs) are provided according to
given protocols. Pts are monitored for medication adherence, toxicity, and efficacy.
Other than CART, all pts received nutritional supplementation, prophylaxis with
cotrimoxazole (CTX-proph), and treatment of TB and malaria, if needed. All
consecutive pts with baseline CD4 < 200 were analysed by an intent-to-treat
approach. Follow-up was censored on Aug 31, 2002.
Results: Of 148 pts
included in the study, 73% were females, median age 30 yrs (range 15–58), CD4
109 (0–199), VL 5.26 log (1.69–6.70). All pts underwent VCT and accepted
treatment when prescribed. Within 1 month from the first visit, 82 pts (55%)
received CART, while 66 received only nutritional supplementation, CTX-proph
and, if needed, treatment of TB and malaria. Adherence to CART was very high;
WHO grade 3 toxicity occurred in 3 pts (who temporarily interrupted CART). There
were no significant differences in terms of baseline clinical or laboratory
parameters, age, VL, CD4, and weight, between those receiving or not CART.
After 8 weeks of CART, mean change in VL was -2.6 log (71% < 500 c/ml), and
mean CD4 increase was 164 cells/μl. Kaplan-Meier
curves showed a cumulative probability of 24-weeks survival of 91% in CART and
43% in no CART (log rank p < 0.001). At Cox regression, CART was
significantly associated with time-to-death (HR 0.10; 95%, CI 0.04–0.28), while
CD4 showed a trend (100 cells higher, HR 0.28;0.08–1.03). In a multivariate Cox
model CART remained independently associated with longer survival (HR 0.13;
0.01–0.49).
Conclusions: Use of CART based
upon generic-manufactured antiretrovirals produced an adjusted mean reduction
of 87% (95% CI 51%–99%) of death hazard as compared with no CART but same
background care in HIV pts with CD4 < 200 in Mozambique. Recruitment and
follow-up in the DREAM cohort are continuing.