This genomic region represents an enhancer that was validated by the STARR-seq (self-transcribing active regulatory region sequencing) reporter assay in metastable (SL) mouse embryonic stem cells, where it was defined as a C1 class enhancer that overlaps an active chromatin signature. This locus also includes a candidate cis-regulatory module (CRM) that was identified in developing mouse thymocytes based on a combination of DNase I hypersensitivity and transcription factor binding. That CRM was validated as an active enhancer by high-throughput CapStarr-seq reporter assays showing weak activity in P5424 T cells and NIH3T3 fibroblasts. [provided by RefSeq, Jul 2023]