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Tirzepatide results superior A1C and body weight reductions compared to insulin glargine in adults with type 2 diabetes

Views: 0     Author: lily.com Press Releases     Publish Time: 2021-10-28      Origin: lily.com Press Releases

Tirzepatide results superior A1C and body weight reductions compared to insulin glargine in adults with type 2 diabetes

Newly published data show that participants maintained A1C and weight control up to two years in SURPASS-4, the largest and longest SURPASS trial completed to date
No increased cardiovascular risk identified with tirzepatide; hazard ratio of 0.74 observed for MACE-4 events

SURPASS-4 is the largest and longest clinical trial completed to date of the phase 3 program studying tirzepatide as a potential treatment for type 2 diabetes. The primary endpoint was measured at 52 weeks, with participants continuing treatment up to 104 weeks or until study completion. The completion of the study was triggered by the accrual of major adverse cardiovascular events (MACE) to assess CV risk. In newly published data from the treatment period after 52 weeks, participants taking tirzepatide maintained A1C and weight control for up to two years.

The overall safety profile of tirzepatide, assessed over the full study period, was consistent with the safety results measured at 52 weeks, with no new findings up to 104 weeks. Gastrointestinal side effects were the most commonly reported adverse events, usually occurring during the escalation period and then decreasing over time.

"We are encouraged by the continued A1C and weight control that participants experienced past the initial 52 week treatment period and up to two years as we continue to explore the potential impact of tirzepatide for the treatment of type 2 diabetes," said John Doupis, M.D., Ph.D., Director, Diabetes Division and Clinical Research Center, Iatriko Paleou Falirou Medical Center, Athens, Greece and Senior Investigator for SURPASS-4.

Tirzepatide is a novel investigational once-weekly dual glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptor agonist that integrates the actions of both incretins into a single molecule, representing a new class of medicines being studied for the treatment of type 2 diabetes.

SURPASS-4 was an open-label global trial comparing the safety and efficacy of three tirzepatide doses (5 mg, 10 mg and 15 mg) to titrated insulin glargine in 2,002 adults with type 2 diabetes with increased CV risk who were treated with between one and three oral antihyperglycemic medicines (metformin, a sulfonylurea or an SGLT-2 inhibitor). Of the total participants randomized, 1,819 (91%) completed the primary 52-week visit and 1,706 (85%) completed the study on treatment. The median study duration was 85 weeks and 202 participants (10%) completed two years.

Study participants had a mean duration of diabetes of 11.8 years, a baseline A1C of 8.52 percent and a baseline weight of 90.3 kg. More than 85 percent of participants had a history of cardiovascular events. In the insulin glargine arm, the insulin dose was titrated following a treat-to-target algorithm with the goal of fasting blood glucose below 100 mg/dL. The starting dose of insulin glargine was 10 units per day, and the mean dose of insulin glargine at 52 weeks was 43.5 units per day.

About tirzepatide
Tirzepatide is a once-weekly dual glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptor agonist that integrates the actions of both incretins into a single novel molecule. GIP is a hormone that may complement the effects of GLP-1. In preclinical models, GIP has been shown to decrease food intake and increase energy expenditure therefore resulting in weight reductions, and when combined with a GLP-1 receptor agonist, may result in greater effects on glucose and body weight. Tirzepatide is in phase 3 development for blood glucose management in adults with type 2 diabetes, for chronic weight management and heart failure with preserved ejection fraction (HFpEF). It is also being studied as a potential treatment for non-alcoholic steatohepatitis (NASH).

About SURPASS-4 and the SURPASS clinical trial program
SURPASS-4 (NCT03730662) is a randomized, parallel, open-label trial comparing the efficacy and safety of tirzepatide 5 mg, 10 mg and 15 mg to insulin glargine in adults with type 2 diabetes inadequately controlled with at least one and up to three oral antihyperglycemic medications (metformin, sulfonylureas or SGLT-2 inhibitors), who have increased cardiovascular (CV) risk. The trial randomized 2,002 study participants in a 1:1:1:3 ratio to receive either tirzepatide 5 mg, 10 mg or 15 mg or insulin glargine. Participants were located in the European Union, North America (Canada and the United States), Australia, Israel, Taiwan and Latin America (Brazil, Argentina and Mexico). The primary objective of the study was to demonstrate that tirzepatide (10 mg and/or 15 mg) is non-inferior to insulin glargine for change from baseline A1C at 52 weeks in people with type 2 diabetes and increased CV risk. The primary and key secondary endpoints were measured at 52 weeks, with participants continuing treatment up to 104 weeks or until study completion. The completion of the study was triggered by the accrual of major adverse cardiovascular events (MACE). Study participants enrolled had to have a mean baseline A1C between 7.5 percent and 10.5 percent and a BMI greater than or equal to 25 kg/m2 at baseline. All participants in the tirzepatide treatment arms started the study at a dose of tirzepatide 2.5 mg once-weekly and then increased the dose in a step-wise approach at four-week intervals to their final randomized maintenance dose of 5 mg (via a 2.5 mg step), 10 mg (via steps at 2.5 mg, 5 mg and 7.5 mg) or 15 mg (via steps at 2.5 mg, 5 mg, 7.5 mg, 10 mg and 12.5 mg). All participants in the titrated insulin glargine treatment arm started with a baseline dose of 10 units per day and titrated following a treat-to-target algorithm to reach a fasting blood glucose below 100 mg/dL.

The SURPASS phase 3 global clinical development program for tirzepatide has enrolled more than 20,000 people with type 2 diabetes across 10 clinical trials, five of which are global registration studies. The program began in late 2018, and all five global registration trials have been completed.

About Diabetes

Approximately 34 million Americans2 (just over 1 in 10) and an estimated 463 million adults worldwide3 have diabetes. Type 2 diabetes is the most common type internationally, accounting for an estimated 90 to 95 percent of all diabetes cases in the United States alone2. Diabetes is a chronic disease that occurs when the body does not properly produce or use the hormone insulin.


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