| PKU | phenylketonuria |
| HPA | hyperphenylalaninemia |
| pFC | prefrontal cortex |
| Phe | phenylalanine |
| Tyr | tyrosine |
| ETPKU | early-treated PKU |
| IQ | intellectual quotient |
| BTBR | Black and Tan Brachyury |
| C57 | C57Bl/6JRj |
| IOT | identical object task |
| WMC | working memory capacity |
| DEGs | differentially expressed genes |
| MBP | myelin basic protein |