Head-to-head evidence
Roxadustat vs Vadadustat
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.
Chronic Kidney Disease
Shared mechanism: HIF prolyl hydroxylase (HIF-PH1/2/3) · full Chronic Kidney Disease pipeline
Roxadustat · Evrenzo
Marketed by Astellas Pharma and partners
NCT01750190 · Phase 3 · completed
This was a randomized, quadruple-blind, placebo-controlled Phase 3 trial in 922 non-dialysis CKD patients with anemia. The two primary efficacy endpoints—mean change in hemoglobin over weeks 28-52 and hemoglobin response during the first 24 weeks—were both statistically significant and strongly favored roxadustat over placebo (p<0.0001 for both). The study was adequately powered and used a hard hemoglobin-based clinical endpoint, supporting a strong design and result.
Next expected readout: October 2027 · NCT05970172 (registry estimate)
Vadadustat · Vafseo
Marketed by Akebia Therapeutics
NCT02648347 · Phase 3 · completed
Participants were randomized to vadadustat or active treatment with darbepoetin alfa, but the trial was open-label; 879 received vadadustat and 872 received darbepoetin alfa. The hemoglobin primary endpoint met the prespecified non-inferiority criterion, while the primary cardiovascular safety comparison did not, making the findings mixed rather than clearly positive.
Next expected readout: April 2027 · NCT07565701 (registry estimate)
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: Roxadustat's landscape · Vadadustat's landscape