Table 2.
The reward gene studies found in PUBMED on November 12th, 2017.
| GENE | STUDIES | 
|---|---|
| SEROTONIN RECEPTOR 2a/c | 108 | 
| SEROTONIN TRANSPORTER | 391 | 
| COMT | 579 | 
| MONAMINE OXIDASE-A | 253 | 
| DOPAMINE D1 RECEPTOR | 468 | 
| DOPAMINE D2 RECEPTOR | 1493 | 
| DOPAMINE D3 RECEPTOR | 322 | 
| DOPAMINE D4 RECEPTOR | 521 | 
| DOPAMINE TRANSPORTER | 237 | 
| DOPAMINE-BETA-HYDROXYLASE | 142 | 
| OPIOID RECEPTOR | 739 | 
| GABA RECEPTOR | 183 |