1 => The disorder is placed on the map based on its association with a gene, but the underlying defect is not known
2 => The disorder has been placed on the map by linkage; no mutation has been found
3 => The molecular basis for the disorder is known; a mutation has been found in the gene
4 => A contiguous gene deletion or duplication syndrome, multiple genes are deleted or duplicated causing the phenotype
| Gene Symbol | Chromosomal Location | Gene MIM number | Mapping Method | Phenotype | Phenotype MIM number | Phenotype Mapping Key |
| ERBB2 | 17q12 | 164870 | REa, A, R, Fd | Adenocarcinoma of lung, somatic, 211980 (3) | 211980 | 3 |
| ERBB2 | 17q12 | 164870 | REa, A, R, Fd | Glioblastoma, somatic, 137800 (3) | 137800 | 3 |
| ERBB2 | 17q12 | 164870 | REa, A, R, Fd | Gastric cancer, somatic, 613659 (3) | 613659 | 3 |
| ERBB2 | 17q12 | 164870 | REa, A, R, Fd | Ovarian cancer, somatic, (3) | NA | NA |