Using a single-cell tumor-infiltrating lymphocyte (TIL) reference atlas (Andreatta et al., 2021), we observed that Mpc1 was significantly more expressed in progenitor exhausted (Tpex) than in terminally exhausted (Tex) TILs, whereas Mpc2 levels remained unaltered (Figure 4J). The gene discussed is MPC2; the disease is neoplasm.