This gene has been described as a transcribed retropseudogene (or retro-xaptonuon) based on its structure which lacks most of the introns of SEDL and the detection of transcripts from this locus. Most retropseudogenes are thought to not express protein products. A protein product could potentially be encoded by this retropseudogene that would be identical to the protein product of the SEDL gene. However, it remains unclear whether this gene encodes a protein product or is a transcribed retropseudogene.[3]
Gécz J, Hillman MA, Gedeon AK, et al. (2001). "Gene structure and expression study of the SEDL gene for spondyloepiphyseal dysplasia tarda". Genomics. 69 (2): 242–51. doi:10.1006/geno.2000.6326. PMID11031107.