PREX1, CPNE1, and SAMD12 have, respectively, fused with other genes in breast cancer cell-lines: NFS1-PREX1 in SK-BR-3, CPNE1-PI3 in BT-474 [27], and PHF20L1-SAMD12 in HCC1954 [25,30]. The gene discussed is PI3; the disease is breast carcinoma.