CD4 and non-Hodgkin lymphoma: HIV-negative samples had overall higher median CD4+ T-cell counts (median count ± SD; 859 ± 309) compared to the HIV+ cART-naïve samples, while HIV+ pre-NHL (cART-naïve) had an overall higher median level of CD4+ T cells (775 ± 389) compared to HIV+ (579 ± 302).