CircCDYL Association With hnRNPL Modulates CDYL Isoform Switching in Breast Cancer Cells.

Circular RNAs (circRNAs) are covalently closed back-splicing products involved in the regulation of different cellular processes, and their dysregulation has been frequently observed in cancer cells. CircCDYL, a circRNA derived from the back-splicing of CDYL exon 4, has an emerging role in breast cancer (BC) biology. In this study, we investigated the role of circCDYL in modulating alternative splicing (AS) and isoform switching in MCF-7 BC cells.