SIRPG is also expressed in tumor infiltrating lymphocytes, particularly those bearing signature of CD4+ Treg, exhausted CD8+ T, and CD8+CD103+ T (TRM) cells (35, 39, 40), and its transcript levels correlate with that of PD-1 and CTLA4 (35, 40, 41). The gene discussed is CD4; the disease is neoplasm.