E2F1 and thyroid cancer: Recently, our group reported that the oncogenic activity of focally amplified lncRNA on chromosome 1 (FAL1, ENSG00000228126) is attributed to the expression of genes related to the cell cycle, including transcription factor E2F transcription factor 1 (E2F1), E2F transcription factor 2 (E2F2), and cyclin D1 in thyroid cancers [18].