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 |
| SMO | 7q32.1 | 601500 | A | Basal cell carcinoma, somatic, 605462 (3) | 605462 | 3 |
| SMO | 7q32.1 | 601500 | A | Curry-Jones syndrome, somatic mosaic, 601707 (3) | 601707 | 3 |
| SMO | 20p13 | 615854 | REc | NA | NA | NA |