CD4 and progressive multifocal leukoencephalopathy: Our study showed that the overall survival rate of PLWH with PML was 78% at six months which is higher than previous data from other studies ten years ago and consistent with 72% of six-month survival rate from a study conducted in 2022 (Gasnault et al., 1999; Falcó et al., 2008; Marzocchetti et al., 2009; Anand et al., 2019; Joly et al., 2023),despite the fact that we had lower median CD4 T cell count than other studies.