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In this randomized, controlled trial involving adults with insulin-treated type 2 diabetes, automated insulin delivery resulted in lower glycated hemoglobin levels than continuous glucose monitoring alone.

IntroductionSolitary fibrous tumours (SFTs) are a rare mesenchymal neoplasm with an incidence of 2.8 per 100,000. Only 1% are reported to occur in the female genital tract. Approximately 5–10% of SFTs are associated with Doege–Potter syndrome, a para-neoplastic phenomenon with non-islet cell hypoglycaemia due to tumour production of low molecular weight insulin growth-like factor (IGF) - II.MethodsWe present the third reported case of a pelvic SFT with Doege–Potter syndrome in a 61 year-old woman who presented with an unwitnessed collapse at home and a BSL of 1.25 mg/dL. CT scan found a 23 cm right sided pelvic mass adjacent to the uterus. She underwent emergency surgery due to refractory hypoglycaemia. The mass was extremely vascular and resulted in an 8.3L blood loss requiring a massive transfusion, postoperative ICU admission and management of acute kidney injury and transfusion-related lung injury. Glycaemic control was achieved immediately upon tumour removal. Her recovery was uncomplicated and final histopathology confirmed SFT with malignant transformation. We present a literature review of the previous cases and discuss the challenges involved in diagnosis and treatment.Abstract 113 Figure 1ConclusionDoege - Potter syndrome is an extremely rare presentation of pelvic SFT. Complete surgical excision is the gold standard for treatment of this rare condition.

Hypoglycaemia (blood glucose concentration below the normal range) has been recognised as a complication of insulin treatment from the very first days of the discovery of insulin, and remains a major concern for people with diabetes, their families and healthcare professionals today. Acute hypoglycaemia stimulates a stress response that acts to restore circulating glucose, but plasma glucose concentrations can still fall too low to sustain normal brain function and cardiac rhythm. There are long-term consequences of recurrent hypoglycaemia, which are still not fully understood. This paper reviews our current understanding of the acute and cumulative consequences of hypoglycaemia in insulin-treated diabetes.

Aims/hypothesis Post-bariatric hypoglycaemia (PBH) is a rare, but severe, metabolic disorder arising months to years after bariatric surgery. It is characterised by symptomatic postprandial hypoglycaemia, with inappropriately elevated insulin concentrations. The relative contribution of exaggerated incretin hormone signalling to dysregulated insulin secretion and symptomatic hypoglycaemia is a subject of ongoing inquiry. This study was designed to test the hypothesis that PBH and associated symptoms are primarily mediated by glucagon-like peptide-1 (GLP-1). Methods We conducted a double-blinded crossover study wherein eight participants with confirmed PBH were assigned in random order to intravenous infusion of the GLP-1 receptor (GLP-1r) antagonist. Exendin (9-39) (Ex-9), or placebo during an OGTT on two separate days at the Stanford University Clinical and Translational Research Unit. Metabolic, symptomatic and pharmacokinetic variables were evaluated. Results were compared with a cohort of BMI- and glucose-matched non-surgical controls (NSCs). Results Infusion of Ex-9 decreased the time to peak glucose and rate of glucose decline during OGTT, and raised the postprandial nadir by over 70%, normalising it relative to NSCs and preventing hypoglycaemia in all PBH participants. Insulin AUC and secretion rate decreased by 57% and 71% respectively, and peak postprandial insulin was normalised relative to NSCs. Autonomic and neuroglycopenic symptoms were significantly reduced during Ex-9 infusion. Conclusions/interpretation GLP-1r blockade prevented hypoglycaemia in 100% of individuals, normalised beta cell function and reversed neuroglycopenic symptoms, supporting the conclusion that GLP-1 plays a primary role in mediating hyperinsulinaemic hypoglycaemia in PBH. Competitive antagonism at the GLP-1r merits consideration as a therapeutic strategy. Trial registration : ClinicalTrials.gov NCT02550145

In a randomized trial, once-weekly insulin efsitora, administered in a fixed-dose regimen, was noninferior to once-daily glargine in reducing hemoglobin levels in patients with type 2 diabetes who had not previously received insulin.

The effectiveness of real-time continuous glucose monitoring (rtCGM) in avoidance of hypoglycaemia among high-risk individuals with type 1 diabetes treated with multiple daily insulin injections (MDI) is unknown. We aimed to ascertain whether the incidence and severity of hypoglycaemia can be reduced through use of rtCGM in these individuals. The HypoDE study was a 6-month, multicentre, open-label, parallel, randomised controlled trial done at 12 diabetes practices in Germany. Eligible participants had type 1 diabetes and a history of impaired hypoglycaemia awareness or severe hypoglycaemia during the previous year. All participants wore a masked rtCGM system for 28 days and were then randomly assigned to 26 weeks of unmasked rtCGM (Dexcom G5 Mobile system) or to the control group (continuing with self-monitoring of blood glucose). Block randomisation with 1:1 allocation was done centrally, with the study site as the stratifying variable. Masking of participants and study sites was not possible. Control participants wore a masked rtCGM system during the follow-up phase (weeks 22–26). The primary outcome was the baseline-adjusted number of hypoglycaemic events (defined as glucose ≤3·0 mmol/L for ≥20 min) during the follow-up phase. The full dataset analysis comprised participants who wore the rtCGM system during the baseline and follow-up phases. The intention-to-treat analysis comprised all randomised participants. This trial is registered with ClinicalTrials.gov, number NCT02671968. Between March 4, 2016, and Jan 12, 2017, 149 participants were randomly assigned (n=74 to the control group; n=75 to the rtCGM group) and 141 completed the follow-up phase (n=66 in the control group, n=75 in the rtCGM group). The mean number of hypoglycaemic events per 28 days among participants in the rtCGM group was reduced from 10·8 (SD 10·0) to 3·5 (4·7); reductions among control participants were negligible (from 14·4 [12·4] to 13·7 [11·6]). Incidence of hypoglycaemic events decreased by 72% for participants in the rtCGM group (incidence rate ratio 0·28 [95% CI 0·20–0·39], p<0·0001). 18 serious adverse events were reported: seven in the control group, ten in the rtCGM group, and one before randomisation. No event was considered to be related to the investigational device. Usage of rtCGM reduced the number of hypoglycaemic events in individuals with type 1 diabetes treated by MDI and with impaired hypoglycaemia awareness or severe hypoglycaemia. Dexcom Inc.

Zimislecel is an allogeneic stem cell–derived islet-cell therapy. This phase 1–2 study supports the hypothesis that zimislecel can restore physiologic islet function and thus treat persons with type 1 diabetes.

Two types of antibody could confuse the differential diagnosis of hypoglycaemia. One is insulin-binding autoantibodies (IAA), a double hit causing hypoglycaemia of insulin autoimmune syndrome (IAS, also known as Hirata’s disease) as well as distorting measurements of insulin and/or C-peptide. The clinical manifestations and initial endocrine results in patients with IAS would mimic and masquerade as other common pathologies, as well as factitious hypoglycaemia in adults, children and newborns. The second type is non-IAA autoantibodies which, if fortuitously/incidentally present in patients with hypoglycaemia, could interfere with insulin and/or C-peptide immunoassay measurements, also confusing differential diagnosis. Currently, testing for antibodies (all classes/subclasses) by simple method such as polyethylene glycol (PEG) is not usually included among first-line investigations of hypoglycaemia, causing delayed diagnosis or diagnostic misapplication. Detection of antibodies, irrespective of their nature, warrants cautious and careful differential diagnosis, averting hospitalisation and curtailing unnecessary and expensive investigations.

Orforglipron is a small-molecule, nonpeptide glucagon-like peptide-1 (GLP-1) receptor agonist in clinical development for type 2 diabetes and weight management. Additional data on the efficacy and safety of orforglipron are needed. In this phase 3, double-blind, placebo-controlled trial, we randomly assigned participants in a 1:1:1:1 ratio to receive orforglipron at one of three doses (3 mg, 12 mg, or 36 mg) or placebo once daily for 40 weeks. Participants had type 2 diabetes treated only with diet and exercise, a glycated hemoglobin level of at least 7.0% but no more than 9.5%, and a body-mass index (the weight in kilograms divided by the square of the height in meters) of at least 23.0. The primary end point was the change from baseline to week 40 in the glycated hemoglobin level. A key secondary end point was the percent change in body weight from baseline to week 40. A total of 559 participants underwent randomization. The mean glycated hemoglobin level at baseline was 8.0%. At week 40, the estimated mean change from baseline in the glycated hemoglobin level was -1.24 percentage points with the 3-mg dose, -1.47 percentage points with the 12-mg dose, -1.48 percentage points with the 36-mg dose, and -0.41 percentage points with placebo. All three doses of orforglipron were superior to placebo with respect to the primary end point; the estimated mean difference from placebo was -0.83 percentage points (95% confidence interval [CI], -1.10 to -0.56) with the 3-mg dose, -1.06 percentage points (95% CI, -1.33 to -0.79) with the 12-mg dose, and -1.07 percentage points (95% CI, -1.33 to -0.81) with the 36-mg dose (P<0.001 for all comparisons). The mean glycated hemoglobin level at week 40 was 6.5 to 6.7% with orforglipron. The percent change in body weight from baseline to week 40 was -4.5% with the 3-mg dose, -5.8% with the 12-mg dose, -7.6% with the 36-mg dose, and -1.7% with placebo. The most common adverse events were mild-to-moderate gastrointestinal events, most of which occurred during dose escalation. No episodes of severe hypoglycemia were reported. Permanent discontinuation of orforglipron or placebo due to adverse events occurred in 4.4 to 7.8% of participants receiving orforglipron and 1.4% of participants receiving placebo. In adults with early type 2 diabetes, orforglipron significantly reduced the glycated hemoglobin level over a period of 40 weeks. (Supported by Eli Lilly; ACHIEVE-1 ClinicalTrials.gov number, NCT05971940.).

Cagrilintide and semaglutide have each been shown to induce weight loss as monotherapies. Data are needed on the coadministration of cagrilintide and semaglutide (called CagriSema) for weight management in adults with type 2 diabetes, including those in a subgroup who are undergoing continuous glucose monitoring. In this phase 3a, double-blind, randomized, placebo-controlled trial conducted in 12 countries, we assigned adults with a body-mass index of 27 or more, a glycated hemoglobin level of 7 to 10%, and type 2 diabetes in a 3:1 ratio to receive once-weekly cagrilintide-semaglutide (2.4 mg each) or placebo, along with lifestyle intervention, for 68 weeks. The two primary end points were the percent change in body weight and the percentage of patients with a weight reduction of at least 5%. Additional end points were changes in glycemic measures and safety assessments. Effect estimates were calculated with the use of the treatment-policy estimand (consistent with the intention-to-treat principle). A total of 1206 patients underwent randomization to either the cagrilintide-semaglutide group (904 patients) or the placebo group (302 patients). The estimated mean change in body weight from baseline to week 68 was -13.7% in the cagrilintide-semaglutide group and -3.4% in the placebo group (estimated difference, -10.4 percentage points; 95% confidence interval, -11.2 to -9.5; P<0.001). More patients in the cagrilintide-semaglutide group than in the placebo group had a weight reduction of 5% or more (P<0.001); the same was true of reductions of at least 10%, 15%, and 20% (P<0.001 for the last comparison). The percentage of patients who had a glycated hemoglobin level of 6.5% or less was 73.5% in the cagrilintide-semaglutide group and 15.9% in the placebo group. Gastrointestinal adverse events were reported by 72.5% of the patients in the cagrilintide-semaglutide group and 34.4% in the placebo group, most of which were transient and mild or moderate in severity. Once-weekly cagrilintide-semaglutide (at a dose of 2.4 mg each) resulted in a significantly lower body weight than placebo in adults with obesity and type 2 diabetes. (Funded by Novo Nordisk; REDEFINE 2 ClinicalTrials.gov number, NCT05394519.).