IHC results for CD47 and TIGIT revealed high and low expression (Figure 2) for CD47 in ADG in 47.0% (54/115) and 53.0% (61/115) of cases, respectively; high and low TIGIT expression in ADG was observed in 42.6% (49/115) and 57.4% (66/115) of cases, respectively. Here, TIGIT is linked to isolated congenital adermatoglyphia.