ARID2 and cancer: 31.9 versus 9.3, P < .0001), mutated ARID1B (mean TMB score: 39.1 versus 10.5, P < .0001) and mutated ARID2 (mean TMB score: 41.7 versus 10.0, P < .0001) in pan-cancer patients were all related to higher TMB values, as shown in Figure 2(c,f,i), respectively.