Head-to-head evidence
Sitagliptin vs Trelagliptin
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.
Type 2 Diabetes
Shared mechanism: DPP-4 · full Type 2 Diabetes pipeline
Sitagliptin · Januvia
Marketed by Merck & Co.
NCT00087516 · Phase 3 · completed
The trial randomized 741 participants to double-blind sitagliptin or placebo groups, providing a substantial controlled comparison. The primary endpoint, change in A1C at week 24, was statistically favorable for both sitagliptin doses (p<0.001), but A1C is a surrogate endpoint, so the evidence is rated moderate rather than strong.
Next expected readout: October 2026 · NCT07711171 (registry estimate)
Trelagliptin · Zafatek
Developed by Takeda Pharmaceutical Company
NCT03940183 · Phase 3 · completed
The trial randomized 254 participants to trelagliptin or placebo and used quadruple blinding. Its primary endpoint was the surrogate measure of change in HbA1c at week 24, but results were not posted, so whether the comparison favored trelagliptin is unknown.
Next expected readout: December 2026 · NCT07073768 (registry estimate)
The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: Sitagliptin's landscape · Trelagliptin's landscape