While we confirm that T cells express high baseline levels of PPM1A and demonstrate that HIV-1 infection does not affect PPM1A expression levels in T cells (Figure 4C), we find relatively low basal levels of PPM1A in monocytes, which are then up-regulated upon infection by Mtb or HIV-1 (Figures 2C, 2D and 4B, 4C). The gene discussed is PPM1A; the disease is HIV-1 infection.