<qa>  What is the best potential efficacy of HAART?Patients with human immunodeficiency virus HIV infection must be willing to comply with a regimen of highly active antiretroviral therapy and be on a regimen of highly active antiretroviral therapy HAART selected for best potential efficacy for at least 1 month with evidence of Kaposi sarcoma KS progression on the HAART regimen or be on a optimized regimen of HAART for 4 months or longer with no evidence of KS regression. 