The prediction of the coreceptor usage of HIV-1 is required for the administration of a new class of antiretroviral drugs, i.e. coreceptor antagonists. It can be performed by sequence analysis of the env gene and subsequent interpretation through an internet based interpretation system (geno2pheno[coreceptor]).
Sierra, S., Kaiser, R., Lübke, N., Thielen, A., Schuelter, E., Heger, E., Däumer, M., Reuter, S., Esser, S., Fätkenheuer, G., Pfister, H., Oette, M., Lengauer, T. Prediction of HIV-1 Coreceptor Usage (Tropism) by Sequence Analysis using a Genotypic Approach. J. Vis. Exp. (58), e3264, doi:10.3791/3264 (2011).