Daily Endocrinology Research Analysis

BACKGROUND: Maridebart cafraglutide (known as MariTide) is a long-acting peptide-antibody conjugate that combines glucagon-like peptide-1 receptor agonism and glucose-dependent insulinotropic polypeptide receptor antagonism and that is intended for the treatment of obesity. METHODS: We conducted a phase 2, double-blind, randomized, placebo-controlled, dose-ranging trial that included 11 groups as two cohorts. Participants with obesity (obesity cohort) were randomly assigned in a 3:3:3:2:2:2:3 ratio to receive maridebart cafraglutide subcutaneously at a dose of 140, 280, or 420 mg every 4 weeks without dose escalation; 420 mg every 8 weeks without dose escalation; 420 mg every 4 weeks with 4-week dose escalation; 420 mg every 4 weeks with 12-week dose escalation; or placebo. Participants with obesity with type 2 diabetes (obesity-diabetes cohort) were randomly assigned in a 1:1:1:1 ratio to receive maridebart cafraglutide at a dose of 140, 280, or 420 mg every 4 weeks (all without dose escalation) or placebo. The primary end point was the percent change in body weight from baseline to week 52. RESULTS: We enrolled 592 participants. In the obesity cohort (465 participants; female sex, 63%; mean age, 47.9 years; mean body-mass index [BMI, the weight in kilograms divided by the square of the height in meters], 37.9), the mean percent change in body weight from baseline to week 52 on the basis of the treatment policy estimand (intention-to-treat approach) ranged from -12.3% (95% confidence interval [CI], -15.0 to -9.7) to -16.2% (95% CI, -18.9 to -13.5) with maridebart cafraglutide, as compared with -2.5% (95% CI, -4.2 to -0.7) with placebo.

BACKGROUND: In previous treat-to-target trials, adjustments to the dose of basal insulin have been made at least weekly, according to fasting blood glucose levels. A fixed-dose regimen of insulin efsitora alfa (efsitora), a once-weekly basal insulin, may provide a benefit in adults with type 2 diabetes who have not received previous insulin therapy. METHODS: We conducted a 52-week, phase 3, open-label, treat-to-target trial involving adults with type 2 diabetes who had not previously received insulin therapy. Participants were randomly assigned in a 1:1 ratio to receive once-weekly efsitora or once-daily insulin glargine U100 (glargine). Treatment with efsitora was initiated as a single dose of 100 U administered once weekly, with dose adjustments made every 4 weeks, as needed, at fixed doses of 150, 250, and 400 U to achieve fasting blood glucose levels of 80 to 130 mg per deciliter. Doses of glargine were adjusted weekly or more often according to a standard algorithm to reach the same glycemic goals.

OBJECTIVE: In many individuals, type 2 diabetes (T2D) remains poorly controlled despite taking multiple glucose-lowering therapies. Several studies have demonstrated that endogenous hypercortisolism is prevalent among these individuals. We tested whether cortisol-directed therapy improves their glycemic control. RESEARCH DESIGN AND METHODS: In this prospective, multicenter, double-blind study, 136 individuals with T2D (hemoglobin A1c [HbA1c] 7.5%-11.5% [58-102 mmol/mol] on multiple medications) and hypercortisolism (by dexamethasone suppression test) were randomized 2:1 to the glucocorticoid receptor antagonist mifepristone (300-900 mg once daily; n = 91) or placebo (n = 45) for 24 weeks, with stratification by presence/absence of an adrenal imaging abnormality. The primary end point was the change in HbA1c. Secondary end points included changes in glucose-lowering medications, weight, and waist circumference and safety.