Paper # 183
Limitations of Current Therapies in Developed Countries
Joseph Eron
Univ of North Carolina at Chapel Hill Sch of Med, US
Background: ART has transformed HIV-1 disease in
resource-rich countries. We have more than 20 different antiretroviral
medications or combination formulations, and in clinical trials 75% or more of
antiretroviral-naïve patients achieve suppression of HIV replication to below
the limits of detection of standard assays for 96 weeks or longer. However,
limitations of our therapies do exist. Despite successful therapy in a
substantial proportion of patients who are in care, the number of new
infections in the US has not declined. Therapy for acute or early infection may
benefit the individual and also have public health benefits, but any benefit to
therapy of acute and early infection has been difficult to demonstrate.
Conslusions: Multiple successful first line
therapies have been studied, but currently all Department of Health and Human
Services (DHHS) -recommended first line choices include a single nucleoside
combination. Very long-term toxicity of our initial regimens is poorly
understood and we need alternative initial therapies that are well studied if
only for a minority of patients. Evidence-based data on the optimal second line
treatment are also lacking. Virologic control without limited immune
reconstitution remains a vexing problem for a small but real patient
population. Strategies to enhance immune reconstitution as measured by CD4
increases have been uniformly unsuccessful. Finally development of novel
therapies for patients with highly drug-resistant virus (which fortunately is
currently uncommon) has stalled and innovate therapies for difficult to treat
populations are needed.
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