GLP-1 receptor agonists and cardiovascular outcomes in patients with type 2 diabetes: Clinical evidence and best practice

Bridging the Gap Between Diabetes and Cardiovascular Disease: A Comparative Review of Different Glucagon-Like Peptide-1 (GLP-1) Agonists: Efficacy, Safety, and Patient Outcomes

Diabetes mellitus, particularly Type 2 diabetes (T2DM) remains a significant concern globally with an increase in prevalence reported in recent years. If diabetes is not managed properly, it can lead to several complications including an increased risk of cardiovascular disease (CVD). Cardiovascular complications such as coronary heart disease, peripheral artery disease, and stroke are common among individuals with diabetes. Therefore, the timely management of diabetes becomes very important. Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) have emerged as a promising class of medications that offer benefits beyond glycemic control. Among various benefits, GLP-1 RAs can promote pancreatic β-cell proliferation and reduce their apoptosis. They also exert central effects on appetite and energy balance. Furthermore, the weight-lowering potential of GLP-1 RAs has also been documented in literature which can provide indirect benefit to CVD prevention. Long-term GLP-1 RAs generally have superior efficacy over short-term GLP-1 RAs in terms of controlling overnight and fasting plasma glucose levels. However, short-acting GLP-1 RAs, such as exenatide and lixisenatide, maintain their influence on gastric emptying during prolonged use. Adverse events, particularly, gastrointestinal adverse events, remain a concern with GLP-1 RA use. These symptoms usually appear at the start of treatment but fade as the body adjusts to the medication. GLP-1 RAs have shown beneficial effects on cardiovascular health, including a reduction in the incidence of major adverse cardiovascular events. In conclusion, GLP-1 RAs provide multifaceted benefits in T2DM as they not only maintain glycemic control but also decrease cardiovascular risk.

Safety, pharmacokinetics, and pharmacodynamics of TG103, a novel long-acting GLP-1/Fc fusion protein after a single ascending dose in Chinese healthy subjects

BACKGROUND AND OBJECTIVE

TG103 is a novel GLP-1/Fc fusion protein, developed for the treatment of type 2 diabetes and obesity. This trial was designed to assess the safety and tolerability, pharmacokinetics (PK) and pharmacodynamics (PD) profiles after single ascending dose of TG103 in healthy Chinese subjects.

METHOD

In this double-blind, randomized, placebo-controlled phase I study, Chinese healthy subjects were admitted consecutively to TG103 3 mg, 7.5 mg, 15 mg, and 22.5 mg group with 8 subjects per group and randomized in a 3:1 ratio to receive TG103 treatment or placebo. Following a single subcutaneous(s.c.) injections of TG103, safety and tolerability were evaluated and blood samples were collected for PK and PD analysis at the specified time-points.

RESULT

Overall, 32 healthy subjects were enrolled and completed the study. During the study, a total of 84 adverse effects (AEs) were reported in 25 subjects, all were mild or moderate and resolved spontaneously without intervention. The most common treatment related AEs in TG103 group were decreased appetite (41.7%), nausea, flatulence, elevated urinary β2-microglobulin, increased serum total bile acid (20.8% each), decreased high-density lipoprotein (16.7%), abdominal distension (12.5%). After a single s.c. administration of TG103 3-22.5 mg, the median T_max was 36∼48 hours, and mean t_1/2 was about 147.16∼184.72 hours. The mean C_max for each group was 94.35±52.19, 337.67±56.71, 757.67±206.99, 1236.33±666.25 ng/mL, with AUC_0-t of 14.93±7.67, 59.15±7.39, 91.79±20.41, 163.61±55.99 μg·h/mL, respectively. It showed a linear pharmacokinetic profile in the single dose of TG103 3 mg to 22.5 mg. Compared with placebo, fasting blood glucose decreased in all dose groups, most notably in the 15 mg group, which was consistent with the changes in blood glucose during OGTT, while 2-hour postprandial glucose decreased in all dose groups except 3 mg group.

CONCLUSION

TG103 offers a potential option for hypoglycemic therapy with good tolerability and safety.

CLINICAL TRIAL REGISTRATION

ClinicalTrials.gov NCT03990090; registered 18 June, 2019.