*Preliminary results were presented at the 13th International Workshop on HIV Observational Databases in Lisbon, Portugal, in March 2009.
Trends over calendar time in antiretroviral treatment success and failure in HIV clinic populations*
Article first published online: 8 FEB 2010
© 2010 British HIV Association
Volume 11, Issue 7, pages 432–438, August 2010
How to Cite
Bansi, L., Sabin, C., Delpech, V., Hill, T., Fisher, M., Walsh, J., Chadborn, T., Easterbrook, P., Gilson, R., Johnson, M., Porter, K., Anderson, J., Gompels, M., Leen, C., Ainsworth, J., Orkin, C., Nelson, M., Rice, B., Phillips, A. and for the UK Collaborative HIV Cohort (CHIC) Study and the Health Protection Agency (2010), Trends over calendar time in antiretroviral treatment success and failure in HIV clinic populations. HIV Medicine, 11: 432–438. doi: 10.1111/j.1468-1293.2009.00809.x
- Issue published online: 2 JUL 2010
- Article first published online: 8 FEB 2010
- Accepted 20 October 2009
- antiretroviral therapy;
- time trends;
- UK collaborative HIV cohort (CHIC) study
Effective antiretroviral therapy (ART) has transformed the care of people with HIV, but it is important to monitor time trends in indicators of treatment success and antic future changes.
We assessed time trends from 2000 to 2007 in several indicators of treatment success in the UK Collaborative HIV Cohort (CHIC) Study, and using national HIV data from the Health Protection Agency (HPA) we developed a model to project future trends.
The proportion of patients on ART with a viral load <50 HIV-1 RNA copies/mL increased from 62% in 2000 to 84% in 2007, and the proportion of all patients with a CD4 count <200 cells/μL decreased from 21% to 10%. During this period, the number of patients who experienced extensive triple class failure (ETCF) rose from 147 (0.9%) to 1771 (3.9%). The number who experienced such ETCF and had a current viral load >50 copies/mL rose fromz 118 (0.7%) to 857 (1.9%). Projections to 2012 suggest sustained high levels of success, with a continued increase in the number of patients who have failed multiple drugs but a relatively stable number of such patients experiencing viral loads >50 copies/mL. Numbers of deaths are projected to remain low.
There have been continued improvements in key indicators of success in patients with HIV from 2000 to 2007. Although the number of patients who have ETCF is projected to rise in the future, the number of such patients with viral loads >50 copies/mL is not projected to increase up to 2012. New drugs may be needed in future to sustain these positive trends.