| Name | Term | Count | Genes | P value | FDR |
| hsa04080 | Neuroactive ligand-receptor interaction | 32 | OPRM1, DRD1, TRPV1, ADORA2A, DRD2, DRD5, OPRK1, ADORA1, HRH1, HTR1A, GRIN2B, HRH2, ADRA2A, ADRA2C, ADRA2B, GABRD, GABRA2, GABRG3, ADRB2, CHRM5, ADRB1, CHRM4, CHRM3, CHRM2, HTR7, CHRM1, ADRA1B, ADRA1A, HTR2C, ADRA1D, HTR2A, OPRD1 | 1.05E − 34 | 1.18E − 31 |
| hsa04020 | Calcium signaling pathway | 19 | DRD1, ADORA2A, DRD5, CHRM5, HRH1, ADRB2, ADRB1, CHRM3, HRH2, CHRM2, CHRM1, HTR7, ADRA1B, ADRA1A, HTR2C, ADRA1D, CACNA1A, HTR2A, CACNA1B | 4.24E − 18 | 4.77E − 15 |
| hsa04726 | Serotonergic synapse | 10 | HTR1A, PTGS2, HTR7, SLC6A4, PTGS1, MAOB, HTR2C, CACNA1A, HTR2A, CACNA1B | 1.91E − 08 | 2.14E − 05 |
| hsa04024 | cAMP signaling pathway | 11 | DRD1, ADRB2, HTR1A, ADRB1, GRIN2B, ADORA2A, DRD2, CHRM2, DRD5, CHRM1, ADORA1 | 2.61E − 07 | 2.93E − 04 |
| hsa04022 | cGMP-PKG signaling pathway | 10 | ADRB2, ADRB1, ADRA2A, ADRA1B, ADRA1A, ADRA2C, ADRA2B, ADORA1, ADRA1D, OPRD1 | 4.09E − 07 | 4.60E − 04 |
| hsa04728 | Dopaminergic synapse | 9 | DRD1, SCN1A, GRIN2B, DRD2, SLC6A3, DRD5, MAOB, CACNA1A, CACNA1B | 9.69E − 07 | 0.001089 |
| hsa05032 | Morphine addiction | 8 | OPRM1, GABRD, DRD1, GABRA2, GABRG3, ADORA1, CACNA1A, CACNA1B | 1.23E − 06 | 0.001381 |
| hsa05033 | Nicotine addiction | 6 | GABRD, GABRA2, GABRG3, GRIN2B, CACNA1A, CACNA1B | 4.20E − 06 | 0.004726 |
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