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 |
| RB1 | 13q14.2 | 614041 | Ch, F, Fd | Retinoblastoma, 180200 (3) | 180200 | 3 |
| RB1 | 13q14.2 | 614041 | Ch, F, Fd | Osteosarcoma, somatic, 259500 (3) | 259500 | 3 |
| RB1 | 13q14.2 | 614041 | Ch, F, Fd | Bladder cancer, somatic, 109800 (3) | 109800 | 3 |
| RB1 | 13q14.2 | 614041 | Ch, F, Fd | Small cell cancer of the lung, somatic, 182280 (3) | 182280 | 3 |
| RB1 | 13q14.2 | 614041 | Ch, F, Fd | Retinoblastoma, trilateral, 180200 (3) | 180200 | 3 |