Patients with a higher CV score also had lower CD4+ T-cell counts (p = 0.001), a higher proportion of clinical progression to AIDS (p < 0.001) and a poor immunological response to anti-retroviral therapy (ART) (p = 0.035) (Table 2) and a higher right atrial area (p = 0.006) at rest TTE compared to patients with a lower CV risk score (Table 3). Here, CD4 is linked to AIDS.