Type 2 & other diabetes

HTD1801 in Combination with Metformin for Type 2 Diabetes

NEJM EvidPublished Randomised controlled trial

Authors' conclusion

After 24 weeks, HbA1c reduction was significantly greater among patients with T2D taking metformin and randomly assigned to receive HTD1801 versus placebo. A higher proportion of patients in the HTD1801 group experienced mild to moderate diarrhea compared with the placebo group.

Study context

Population
Patients with T2D, HbA1c 7.0% to 10.5%, fasting glucose ≤250.5 mg/dl, on stable metformin for ≥8 weeksrandomized 2:1
Participants
365 vs 184
Comparison
HTD1801 vs placebo, added to metformin
  • HTD1801n = 365
  • Placebon = 184reference
Primary endpoint
Change in HbA1c from baseline
Follow-up
Week 24
Methodological detailsphase 3, double-blind, placebo-controlled, add-on to metformin
  • Phase 3
  • Double-blind
  • Placebo-controlled
  • Add-on to metformin

Primary result

As reported in the abstract

Change in HbA1c from baseline · week 24 HTD1801 mean change −1.2 (95% CI −1.3–-1.1) percentage points · Placebo mean change −0.7 (95% CI −0.8–-0.6) percentage point

Mean HbA1c at baseline

Mean HbA1c at 24 weeks

Further findings

HbA1c at baseline

HbA1c at 24 weeks

Safety

Diarrhea (most common adverse event) · 24 weeks

Diarrhea (most common adverse event) — Severe diarrhea cases in HTD1801; all other cases mild to moderate
3

Severe hypoglycemia · 24 weeks

Patients with severe hypoglycemia
0

Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.

Original publication

HTD1801 in Combination with Metformin for Type 2 Diabetes. NEJM Evid. Published 7 June 2026. doi:10.1056/evidoa2500317

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