REG4, Regenerating Family Member 4, RELP, GISP, Gastrointestinal Secretory Protein, REG-IV, Regenerating Islet-Derived Family, Member 4, Regenerating Islet-Derived Protein IV, Regenerating Islet-Derived Protein 4, Regenerating Gene Type IV, REG-Like Protein, Reg IV, REG-4