HTR1A and serotonin syndrome: Consistently, it has been reported that the specific 5-HT1A receptor agonist 8-OH-DPAT or the specific 5-HT2A receptor agonist (4-Bromo-3,6-dimethoxybenzocyclobuten-1-yl)methylamine hydrobromide TCB-2 induces serotonin syndrome behavior in mice [35,36,37].