A Study of Tirzepatide (LY3298176) Versus Semaglutide Once Weekly as Add-on Therapy to Metformin in Participants With Type 2 Diabetes (SURPASS-2)

Lilly

Status and phase: Completed; Phase 3

Conditions: Type 2 Diabetes

Treatments: Drug: Semaglutide; Drug: Tirzepatide

Study type: Interventional

Funder types: Industry

Identifiers

NCT03987919

I8F-MC-GPGL (Other Identifier)

2018-004422-29 (EudraCT Number)

17001

Details and patient eligibility

About

The reason for this study is to compare the effect of the study drug tirzepatide to semaglutide on blood sugar levels in participants with type 2 diabetes. The study will last approximately 47 weeks and may include about 12 visits.

Enrollment: 1,879 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Have been diagnosed with type 2 diabetes mellitus (T2DM)
• Have HbA1c between ≥7.0% and ≤10.5%
• Be on stable treatment with unchanged dose of metformin >1500 mg/day for at least 3 months prior to screening
• Be of stable weight (±5%) for at least 3 months before screening
• Have a body mass index (BMI) ≥25 kilograms per meter squared (kg/m²) at screening

Exclusion criteria

• Have type 1 diabetes mellitus
• Have had chronic or acute pancreatitis any time prior to study entry
• Have proliferative diabetic retinopathy or diabetic maculopathy or nonproliferative diabetic retinopathy requiring acute treatment
• Have disorders associated with slowed emptying of the stomach, or have had any stomach surgeries for the purpose of weight loss
• Have acute or chronic hepatitis, signs and symptoms of any other liver disease, or blood alanine transaminase (ALT) enzyme level >3.0 times the upper limit of normal (ULN) for the reference range, as determined by the central laboratory. Participants with nonalcoholic fatty liver disease (NAFLD) are eligible for participation in this trial only if there ALT level is ≤3.0 the ULN for the reference range
• Have an estimated glomerular filtration rate <45 milliliters/minute/1.73 m² (or lower than the country specific threshold for using the protocol required dose of metformin per local label)
• Have had a heart attack, stroke, or hospitalization for congestive heart failure in the past 2 months
• Have a personal or family history of medullary thyroid carcinoma or personal history of multiple endocrine neoplasia syndrome type 2
• Have been taking any other diabetes medicines other than metformin during the last 3 months
• Have been taking weight loss drugs, including over-the-counter medications during the last 3 months

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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1,879 participants in 4 patient groups

5 mg Tirzepatide

Experimental group

Description:

5 milligrams (mg) tirzepatide administered subcutaneously (SC) once a week.

Treatment:

Drug: Tirzepatide

10 mg Tirzepatide

Experimental group

Description:

10 mg tirzepatide administered SC once a week.

Treatment:

Drug: Tirzepatide

15 mg Tirzepatide

Experimental group

Description:

15 mg tirzepatide administered SC once a week.

Treatment:

Drug: Tirzepatide

1 mg Semaglutide

Active Comparator group

Description:

1 mg semaglutide administered SC once a week.

Treatment:

Drug: Semaglutide