| FXS | Fragile X syndrome |
| FMR1 | fragile X mental retardation 1 |
| FMRP | fragile X mental retardation protein |
| ADCY1 | type 1 adenylyl cyclase |
| KO | knockout |
| PDE | phosphodiesterase |
| ERK½ | extracellular signal-regulated kinase ½ |
| cAMP | cyclic AMP |
| WT | wild type |
| PI3K | Phosphoinositide 3 kinase |
| Akt | protein kinase B |