TTR encodes the human gene, Transthyretin. It may also be known as: Prealbumin; TBPA; ATTR; CTS; CTS1; HEL111; HsT2651; PALB. The encoded protein has an amino acid length of 147 and a mass of 15.9 kDa. Other isoforms may exist. TTR is a member of the Transthyretin family. Homologs of this gene exist in other organisms, including: Mouse.