The function of TCEAL7 (transcription elongation factor A like 7, Ensembl gene identifier ENSG00000182916) is as follows. Plays a role in the negative regulation of NF-kappa-B signaling at the basal level by modulating transcriptional activity of NF-kappa-B on its target gene promoters. Associates with cyclin D1 promoter containing Myc E-box sequence and transcriptionally represses cyclin D1 expression. Regulates telomerase reverse transcriptase expression and telomerase activity in both ALT (alternative lengthening of telomeres)and telomerase-positive cell lines. {ECO:0000269|PubMed:18806825, ECO:0000269|PubMed:19966855, ECO:0000269|PubMed:20454512}.