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 |
| PXN | 2p25.3 | 605158 | REa, R, A | Anterior segment dysgenesis 7, with sclerocornea, 269400 (3) | 269400 | 3 |
| PXN | 12q24.23 | 602505 | A | NA | NA | NA |