Sotagliflozin added to optimized insulin therapy leads to HbA1c reduction without weight gain in adults with type 1 diabetes: A pooled analysis of inTandem1 and inTandem2

Diabetes Obes Metab. 2020 Nov;22(11):2089-2096. doi: 10.1111/dom.14127. Epub 2020 Jul 28.


Aim: To evaluate whether the addition of sotagliflozin to optimized insulin significantly increases the proportion of adults with type 1 diabetes who achieve HbA1c goals without weight gain.

Materials and methods: In a patient-level pooled analysis (n = 1575) of data from two phase 3, 52-week clinical trials (inTandem1 and inTandem2), the change from baseline in HbA1c and weight as well as the proportion of participants achieving an HbA1c of less than 7% without weight gain were compared between groups treated with placebo, sotagliflozin 200 mg and sotagliflozin 400 mg.

Results: From a mean baseline HbA1c of 7.7%, mean HbA1c changes at week 24 were -0.36% (95% CI -0.44% to -0.29%) and -0.38% (-0.45% to -0.31%) with sotagliflozin 200 and 400 mg versus placebo (P = .001 for both), respectively, with sustained effects through week 52. Weight significantly decreased at weeks 24 and 52 in both sotagliflozin groups compared with placebo. At week 52, the proportion of patients who achieved an HbA1c of less than 7% without weight gain was 21.8% with sotagliflozin 200 mg, 26.1% with sotagliflozin 400 mg and 9.1% with placebo (P < .001). Other HbA1c, weight and safety composite variables showed similar significant trends.

Conclusion: When added to optimized insulin therapy, sotagliflozin improved glycaemic control and body weight and enabled more adults with type 1 diabetes to achieve HbA1c goals without weight gain over 52 weeks, although there was more diabetic ketoacidosis relative to placebo.

Keywords: HbA1c, insulin, personalized medicine, sotagliflozin, type 1 diabetes, weight reduction.

Publication types

  • Meta-Analysis
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Diabetes Mellitus, Type 1* / drug therapy
  • Double-Blind Method
  • Drug Therapy, Combination
  • Glycated Hemoglobin A / analysis
  • Glycosides
  • Humans
  • Hypoglycemic Agents / therapeutic use
  • Insulin / therapeutic use
  • Weight Gain


  • Glycated Hemoglobin A
  • Glycosides
  • Hypoglycemic Agents
  • Insulin
  • (2S,3R,4R,5S,6R)-2-(4-chloro-3-(4-ethoxybenzyl)phenyl)-6-(methylthio)tetrahydro-2H-pyran-3,4,5-triol