Both of these genes are part of the PPP1R1B-STARD3-TCAP-PNMT-PERLD1-ERBB2-MGC14832-GRB7 locus at the 17q12 region, which has previously been reported to be gained and overexpressed in breast and gastric cancers [23,35-38]. Here, GRB7 is linked to gastric cancer.