Probable Na(+):H(+) or K(+):H(+) antiporter (Probable). Upon IGF1-dependent phosphorylation, facilitates the membrane translocation and activation of AKT1 (PubMed:40285646). {ECO:0000269|PubMed:40285646, ECO:0000305|PubMed:37554015, ECO:0000305|PubMed:40285646}. This is the function of Ensembl gene identifier ENSG00000150403 (SLC9D1, solute carrier family 9 member D1).