Contribution of basal and postprandial hyperglycaemia in type 2 diabetes patients treated by an intensified insulin regimen: Impact of pump therapy in the OPT2mise trial

Efficacy and safety of iGlarLixi versus insulin glargine in type 2 diabetes: a meta-analysis of randomized controlled trials

OBJECTIVE

This meta-analysis aimed to compare the efficacy and safety of iGlarLixi with those of insulin glargine for treating type 2 diabetes (T2D).

METHODS

A systematic search of PubMed, the Cochrane Library, and EMBASE was conducted to identify randomized controlled trials (RCTs) that compared the use of iGlarLixi with the use of insulin glargine in patients with T2D. The meta-analysis protocol was registered at PROSPERO. The primary outcomes of interest were changes in hemoglobin A1c (HbA1c) and body weight. Risk ratios and mean differences with 95% confidence intervals were calculated using random-effects models.

RESULTS

We included 7 RCTs comprising 2229 men and 1926 women, of whom 2075 (49.94%) were randomized to iGlarLixi. Compared with insulin glargine, iGlarLixi decreased HbA1c (MD: -0.50%; 95% CI: -0.65% to -0.35%; p < 0.00001) and body weight (MD: -1.17 kg; 95% CI: -1.36 kg to -0.98 kg; p < 0.00001) and self-measured plasma glucose (MD: -0.97 mmol/L; 95% CI: -1.27 mmol/L to -0.68 mmol/L; p < 0.00001) and increased the percentage of patients achieving HbA1c < 7% (RR: 1.66; 95% CI: 1.31 to 2.11; p < 0.0001), the percentage of patients achieving HbA1c < 6.5% (RR: 2.11; 95% CI: 1.53 to 2.92; p < 0.00001), and HbA1c < 7.0% without weight gain and/or without severe or blood glucose-confirmed hypoglycemic episodes (RR: 2.18; 95% CI: 1.76 to 2.69; p < 0.00001). However, a higher incidence of gastrointestinal adverse events (RR: 2.02; 95% CI: 1.61 to 2.54; p < 0.00001) and adverse events (RR: 1.08; 95% CI: 1.02 to 1.14; p = 0.008) was associated with iGlarLixi than with insulin glargine.

CONCLUSIONS

Compared with insulin glargine, iGlarLixi is superior in reducing blood glucose levels and facilitating weight loss. Nevertheless, its administration is also linked to a heightened occurrence of gastrointestinal and adverse events.

Basal Hyperglycemia Contributes More Than 50% to Time in Range in Pregnant Women With Type 1 Diabetes

OBJECTIVES

To evaluate the relative contribution of basal hyperglycemia (BHG) and postprandial hyperglycemia (PHG) to the time in range (TIR) categories and adverse pregnancy outcomes in pregnant women with type 1 diabetes mellitus (T1DM).

MATERIALS AND METHODS

This observational study included 112 pregnancies with T1DM from the CARNATION study who wore continuous glucose monitoring (CGM) devices during pregnancy. The data from CGM were analyzed for TIR (range, 3.5-7.8 mmol/L), areas under the curve of PHG, area under the curve of BHG, and BHG and PHG contribution rates. The contribution rates of BHG and PHG to the different levels of TIR (<60%, 60-78%, ≥78%) and adverse pregnancy outcomes were analyzed.

RESULTS

The participants' average age was 28.8 ± 3.9 years with a diabetes duration of 8.4 ± 6.2 years. All women experienced a mean TIR of 75.6 ± 19.0% and a mean glycated hemoglobin of 6.2 ± 1.1% during pregnancy. The BHG contribution accounted for 74.9% (36.8, 100), 69.2% (13.4, 100), and 66.5% (10.0, 100) (P < .001) and PHG accounted for 25.1% (0, 63.2), 30.8% (0, 86.6), and 33.5% (0, 90.0) (P < .001) when participants experienced the TIR<60%, 60%-78%, and ≥78%, respectively. Participants with higher BHG contribution rates tended to have more adverse pregnancy outcomes.

CONCLUSION

Basal hyperglycemia was the major contributor to TIR during pregnancy. Along with controlling PHG, pregnant women with T1DM who did not reach the target of TIR may benefit more from the optimization of insulin regimens focusing on reducing basal glucose.

Unmet Needs of Glycaemic Control and Risk Factors of Residual Hyperglycaemia in a Chinese Population with Type 2 Diabetes Initiating Basal Insulin: A Post Hoc Analysis of the FPG GOAL Study

Introduction

To aim of this analysis was to investigate the extent and evaluate risk factors of residual hyperglycaemia in Chinese individuals with type 2 diabetes (T2D) initiating basal insulin.

Methods

FPG GOAL was a 24-week, open-label, treat-to-target randomised controlled trial in Chinese individuals with T2D inadequately controlled with oral anti-hyperglycaemic drugs initiating treatment with basal insulin. This analysis categorised participants into the following glycaemic control categories: hyperglycaemia [glycated haemoglobin (HbA1c) ≥ 53 mmol/mol (≥ 7%), fasting plasma glucose (FPG) ≥ 7.0 mmol/L], residual hyperglycaemia [HbA1c ≥ 53 mmol/mol (≥ 7%), FPG < 7.0 mmol/L], discordant [HbA1c < 53 mmol/mol (< 7%), FPG ≥ 7.0 mmol/L] and at target [HbA1c < 53 mmol/mol (< 7%), FPG < 7.0 mmol/L]. The proportion of participants in each glycaemic control category was assessed at weeks 12 and 24. Multivariable regression analyses were conducted to evaluate risk factors for residual hyperglycaemia.

Results

Of the 914 participants included, 22.1% had residual hyperglycaemia, 31.9% had hyperglycaemia, 11.1% were discordant and 29.3% were at target at week 24. More participants who were randomised to a fasting blood glucose (FBG) target of > 3.9 to ≤ 5.6 mmol/L had residual hyperglycaemia compared with participants randomised to a FBG target of > 3.9 to ≤ 6.1 mmol/L or > 3.9 to ≤ 7.0 mmol/L. Multivariable analysis indicated that higher HbA1c and lower FPG levels at baseline were associated with greater proportion of residual hyperglycaemia.

Conclusion

Some Chinese individuals with T2D may have residual hyperglycaemia 3–6 months after initiating basal insulin treatment and require further intensified treatment. Higher HbA1c and lower FPG levels could be risk factors for residual hyperglycaemia.

Trial Registration

ClinicalTrials.gov identifier NCT02545842.

Supplementary Information

The online version contains supplementary material available at 10.1007/s12325-022-02128-y.

Insulin Pump Therapy for Patients With Type 2 Diabetes Mellitus: Evidence, Current Barriers, and New Technologies

An increasing number of patients with type 2 diabetes mellitus (T2DM) use insulin pumps. The first insulin pumps especially designed for patients with T2DM have recently become available. However, national guidelines do not primarily recommend the use of continuous subcutaneous insulin infusion (CSII) for this patient group. The effectiveness of CSII in T2DM has not yet been convincingly demonstrated, despite some positive evidence. An overview and an assessment of various studies to date will be given. T2DM is a heterogeneous disease with a substantial phenotypic variability; therefore, it is difficult to provide general conclusions about the effectiveness of CSII in T2DM therapy. The pump types, characteristics, and associated barriers may play a relevant role for therapy outcome. Most advanced functions like various bolus dosages offered by conventional insulin pumps are not needed for T2DM treatment and complicate the device handling for this subject group. Additionally, new technologies like increased connectivity, advanced software features, and interoperability are currently becoming available representing further barriers. The implementation of this technological progress might be a benefit for pumps for T2DM as well. However, these have not been sufficiently examined either and increased security challenges due to integrated peripheral components should not be neglected in terms of a sound cybersecurity. Pump features and handling for patients with T2DM should be as easy as possible, indicating a need for insulin pumps specially designed for patients with T2DM. However, it has to be investigated if pumps designed for T2DM are more effective than other intensified insulin regimens.

A new approach for investigating the relative contribution of basal glucose and postprandial glucose to HbA1C

To develop an accurate method for evaluating the relative contributions of basal glucose (BG) and postprandial glucose (PPG) to glycated haemoglobin (HbA1c) in subjects with hyperglycaemia using a Continuous Glucose Monitoring System (CGMS®). The subjects were divided into the normal glucose tolerance (NGT), impaired glucose tolerance (IGT), newly-diagnosed type 2 diabetes (NDDM), and drug-treated type 2 diabetes (T2DM) groups. We evaluated the relative contributions of BG and PPG to HbA1c in patients with hyperglycaemia according to three different baseline values. Subjects (n = 490) were grouped as follows: 92 NGT, 36 IGT, 131 NDDM, and 231 T2DM. The relative contributions of PPG to HbA1c were calculated using baseline values of 6.1 mmol/L, 5.6 mmol/L, and the 24-h glucose curve of the NGT group. The relative contribution of PPG to HbA1c decreased progressively from the IGT group to the T2DM group. Compared with the 24-h glucose curve as the baseline, the relative contribution of PPG was overestimated in 9.04% and 1.76% of the subjects when 6.1 mmol/L and 5.6 mmol/L were used as baselines, respectively (P < 0.01), in T2DM patients. The 24-h glucose curve of NGT is more suitable for studying the relative contributions of BG and PPG to HbA1c and it is more precise, as it considers physiological fluctuations in NGT after meals. However, 5.6 mmol/L can be used when the 24-h glucose curve for NGT is unavailable; using 6.1 mmol/L as a baseline value may overestimate the contribution to the HbA1c. There is no unified standard for assessing the contributions of basal glucose (BG) and postprandial glucose (PPG) to HbA1c. The 24-h glucose curve of NGT is more suitable for studying the relative contributions of BG and PPG to HbA1c, as it considers physiological fluctuations in NGT after meals. However, 5.6 mmol/L can be used when the 24-h glucose curve for NGT is unavailable; using 6.1 mmol/L as a baseline value may overestimate the contribution to the HbA1c.

Efficacy and safety of exenatide as add-on therapy for patients with type 2 diabetes with an intensive insulin regimen: A randomized double-blind trial

AIM

To assess the safety and efficacy of the short-acting glucagon-like peptide-1 receptor agonist exenatide on a population of patients with type 2 diabetes (T2D) mostly treated with continuous subcutaneous insulin injection (CSII).

MATERIALS AND METHODS

A phase 2/3, multicentre, randomized, parallel-group, double-blind, placebo-controlled, 6-month trial was conducted. Patients were randomized to receive subcutaneous (SC) injections of exenatide (10 μg BID) or matched placebo.

RESULTS

A total of 46 patients with T2D and elevated HbA1c were randomized (42% of the planned sample size): exenatide (n = 28) and placebo (n = 18). CSII treatment was used by 75% and 89% of patients of the exenatide and placebo groups, respectively. At 6 months, the change in HbA1c was -0.62% ± 0.94% and 0.08% ± 0.81% in the exenatide and placebo groups, respectively (difference, -0.70%; 95% CI [-1.24%; -0.15%], P = .014); body weight and body mass index decreased in the exenatide group (-2.55 ± 3.25 kg and -1.00 ± 1.31 kg/m² ) and increased in the placebo group (1.29 ± 2.82 kg and 0.46 ± 1.16 kg/m² ) (observed difference, -3.85 and -1.45, respectively, both P < .001); the postdinner capillary blood glucose value was lower in the exenatide group compared with the placebo group (162.4 ± 80.5 vs. 259.1 ± 94.4 mg/dL, respectively; observed difference, -96.7, P < .01). Hypoglycaemic risk, quality of life and overall safety were not different between the groups, apart from the expected occurrence of digestive effects in the exenatide group.

CONCLUSIONS

Although we failed to reach our planned sample size, the addition of exenatide treatment 10 μg BID SC in T2D patients with uncontrolled HbA1c despite an intensified insulin regimen, resulted in a significant reduction of HbA1c and body weight with a good overall safety profile and acceptance.