Head-to-head evidence
AV-101 vs Zelquistinel
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.
Major Depressive Disorder
Shared mechanism: NMDA receptor · full Major Depressive Disorder pipeline
AV-101
Developed by VistaGen Therapeutics
NCT02484456 · Phase 2 · completed
Nineteen participants were randomized to receive AV-101 and placebo in a double-blind crossover design. The primary clinical depression endpoint was not statistically significant at the reported time points; for example, the day-0 comparison was 20.22 with AV-101 versus 20.56 with placebo (p=0.68), and the day-13 comparison was 21.52 versus 19.69 (p=0.26).
Zelquistinel
Developed by Syndeio Biosciences
NCT03726658 · Phase 1/2 · completed
The study randomized 226 participants overall to several zelquistinel dose groups or placebo and masked both participants and investigators, but it stated that no power calculation was performed and each comparison was relatively small. The primary MADRS comparisons were clinical measures but were missed, with all reported p-values above 0.05, so the findings provide limited evidence of benefit.
Next expected readout: September 2027 · NCT06547489 (registry estimate)
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: AV-101's landscape · Zelquistinel's landscape