Head-to-head evidence
Clozapine vs Iloperidone (PD psychosis use)
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
Clozapine
Marketed by HLS Therapeutics Inc.
NCT00250575 · Phase 3 · completed
The study was open-label, single-arm, and had no placebo or active comparator; all 43 participants received clozapine. Its primary measures focused on hematological tests, blood-related adverse events, and monitoring-system compliance rather than a clinical symptom endpoint, and no results are posted.
Next expected readout: April 2027 · NCT04580134 (registry estimate)
Iloperidone (PD psychosis use) · Fanapt
Marketed by Vanda Pharmaceuticals
NCT00254202 · Phase 3 · completed
The trial was randomized and quadruple-blind, included both placebo and active control groups, and enrolled 593 participants. Its primary clinical symptom endpoint was PANSS-T change, with mean changes of -12.0 for iloperidone versus -7.1 for placebo, but statistical significance of the comparison is not reported, so the result remains unclear.
Next expected readout: November 2027 · NCT06961968 (registry estimate)
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: Clozapine's landscape · Iloperidone (PD psychosis use)'s landscape