HAART regimens containing abacavir have been shown in direct comparative trials in HIV-infected patients with a baseline viral load <100,000 copies/mL to be as effective as nelfinavir-and indinavir-containing HAART in suppressing viral load and increasing CD4+ cell counts without inducing hyperlipidemia, insulin resistance, or central adiposity [18-21]. Here, CD4 is linked to hyperlipidemia.