GRIK2 and breast cancer: Furthermore, several fusion genes, such as CCNH-C5orf30 and TRMT11-GRIK2, have been observed at variable frequencies across cancer cell lines and primary samples from 7 different malignancies including ovarian adenocarcinoma, oesophageal adenocarcinoma, hepatocellular carcinoma, non-small cell lung cancer, glioblastoma multiforme, breast cancer, and colon cancer [89].