Ras-related protein Ral-A (RALA) is a member of the Ras GTPaseÊfamily and shares a high structural similarity with RAS proteins (1). In human cells, the two protein isoforms, RALA and RALB, have been shown to play roles in the proliferation, survival, and metastasis of a variety of human cancers. RALA and RALB share 81% sequence homology with one another and more than 50% sequence homology with RAS. Given their importance in cancer biology, RAL proteins have emerged as desirable clinical targets (2).