SS18L1 is a symbol for the gene, Synovial sarcoma translocation gene on chromosome 18-like 1, in humans. Other names include: Calcium-responsive transactivator; SYT homolog 1; SS18-like protein 1; CREST; LP2261. The encoded protein has an amino acid length of 396 and a mass of 43.0 kDa. Other isoforms may exist. SS18L1 is a member of the SS18 family. This gene shares homology with other species, including: Mouse, Rat, Frog.