Head-to-head evidence
Asenapine vs Risperidone (QUAR)
Same mechanism, same race: design-graded trial evidence for both assets, with the grading rationale shown. Grades describe the quality of the evidence, never the merits of either security.
Schizophrenia
Shared mechanism: Dopamine D2 and serotonin 5-HT2A receptors (antagonist) · full Schizophrenia pipeline
Asenapine
Marketed by AbbVie and partners
NCT00212784 · Phase 3 · completed
This 52-week trial randomly assigned 1,225 people with schizophrenia to asenapine or to olanzapine, with participants, carers, investigators and outcome assessors all unaware of assignment. The primary measure was change in total PANSS symptom score. Asenapine improved symptoms by 21.0 points against 27.5 points for olanzapine, a difference favouring olanzapine at p<0.0001, so asenapine was less effective than its active comparator on this measure.
Next expected readout: December 2027 · NCT07047651 (registry estimate)
Risperidone (QUAR)
Developed by Laboratorios Farmacéuticos Rovi, S.A.
NCT06276361 · Phase 1 · completed
A sequential, open-label pharmacokinetic study of quarterly-injection risperidone in 58 participants, with pharmacokinetic parameters as the primary measures. The design is uncontrolled for treatment effect and no results have been posted to the registry, so this is weak evidence.
Next expected readout: December 2027 · NCT07047651 (registry estimate)
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: Asenapine's landscape · Risperidone (QUAR)'s landscape