ELK4 and prostate cancer: Subsequently, additional noncanonical chimeric RNAs, such as SLC45A3–ELK4 in prostate cancer,13, 14RRM2–c2orf48 in nasopharyngeal carcinoma and lung cancer,15, 16 and BCL2L2–PABPN1 in glioblastoma and bladder cancer (BCa),2, 11 have been reported in various solid cancers.