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 |
| DOK1 | 2p13.1 | 602919 | R | NA | NA | NA |
| DOK1 | 12p12.3 | 110600 | A, Psh | [Blood group, Dombrock], 616060 (3) | 616060 | 3 |