STARD13 and neoplasm: STARD13 encodes a protein that contains a sterile alpha motif domain in the N-terminus, an ATP/GTP-binding motif, a GTPase-activating protein domain, and a STAR-related lipid transfer domain in the C-terminus [26], [39] STARD13, a putative tumor suppressor gene located at chromosome 13q12.3 that has loss of heterozygosity in hepatic cancer.