CDC42EP3 and neoplasm: By FISH analysis, we identified 4 genetic categories: 1) disomic, with 2 copies of CDCP1 and a centromere (CDCP1 < 3, CEP3 < 3) (50/75, 67%); 2) amplified (CDCP1 ≥ 3, CEP3 < 3 in at least 10% of tumor cells) (4/75, 5%); 3) polysomic (CDCP1 ≥ 3, CEP3 ≥ 3 in at least 40% of tumor cells) (15/75, 20%); and 4) CDCP1 deleted with respect to its centromere (CDCP1 < 3 CEP3 ≥ 3) (6/75, 8%).