Dexamethasone-induced Ras-related protein 1 (RASD1) is a protein that in humans is encoded by the RASD1 gene on chromosome 17. It is ubiquitously expressed in many tissues and cell types. As a member of the Ras superfamily of small G-proteins, RASD1 regulates signal transduction pathways through both G proteins and G protein-coupled receptors. RASD1 has been associated with several cancers. The RASD1 gene also contains one of 27 SNPs associated with increased risk of coronary artery disease.