1 => Disorder placed on map based on association with a gene; defect unknown
2 => Disorder placed by linkage; no mutation found
3 => Molecular basis known; mutation found in gene
4 => Contiguous gene deletion/duplication syndrome
| Gene Symbol | Chromosomal Location | Gene MIM number | Mapping Method | Phenotype | Phenotype MIM number | Phenotype Mapping Key |
| PPP1CB | 2p23.2 | 600590 | REa, A | Noonan syndrome-like disorder with loose anagen hair 2, 617506 (3) | 617506 | 3 |