LRATD1 (Lecithin Retinol Acyltransferase Domain Containing 1): LRATD1 is a gene that encodes a protein with a domain similar to lecithin retinol acyltransferase (LRAT), an enzyme involved in vitamin A metabolism. While its exact functions remain under investigation, LRATD1 is thought to play a role in processes related to vitamin A utilization and regulation.