MTAP and cancer: Among ERG negative cancers, Ki67LI was 1.7 ± 0.1 in 584 tumors with 1+, 2.7 ± 0.1 in 1,103 tumors with 2+, and 3.3 ± 0.1 in 747 tumors with 3+ MTAP staining (p < 0.0001).