In the saxaglpiptin trials, patients either took saxagliptin or a placebo, along with other diabetes drugs, for 24 weeks. The alogliptin trials lasted two weeks longer, with patients taking alogliptin or a placebo.
Compared to the placebo, taking alogliptin or saxagliptin in addition to other diabetes drugs led to better hemoglobin A1c levels without adding new safety concerns.
The studies didn't include a head-to-head comparison of alogliptin, saxagliptin, or Januvia.
The findings, presented in Rome at the 44th annual meeting of the European Association for the Study of Diabetes, were funded by the drugs' makers.
Alogliptin is made by Takeda Pharmaceutical Company. The drug companies Bristol Myers Squibb and AstraZeneca are collaborating on saxagliptin, which they plan to call "Onglyza" if approved.