This CCDS ID represents a variant of the SCP2 locus that uses a downstream promoter, known as the SCP2 promoter. This promoter initiates transcription in an internal exon compared to the longer CCDS572.1 variant, which uses the upstream SCPx promoter. Data in PMIDs 7654720, 7698762 and 14563822, as well as chromatin regulatory features (including Ensembl ENSR00000282553 and ENSR00000282554), support the presence of an active downstream SCP2 promoter.