| L1 | Long Interspersed Element 1 |
| LTR | long-terminal-repeat |
| FL-L1 | full-length L1 |
| UTR | untranslated region |
| ORF | open reading frame |
| EN | endonuclease |
| RT | reverse transcriptase |
| TSD | target site duplication |
| TPRT | target-primed reverse transcription |
| CRC | colorectal cancer |
| TSG | tumor suppressor gene |
| WGS | whole genome sequencing |
| WES | whole exome sequencing |
| TCGA | The Cancer Genome Atlas |
| ICGC | International Cancer Genome Consortium |
| REF | reference |