Oral semaglutide in type 2 diabetes mellitus: Comprehensive review, critical appraisal and clinical consideration of its use in India

Gastrointestinal safety evaluation of semaglutide for the treatment of type 2 diabetes mellitus: A meta-analysis

BACKGROUND

Semaglutide, as an innovative weekly formulation, has attracted much attention. Nevertheless, the predominant occurrence of gastrointestinal adverse events (GIAEs) poses a noteworthy challenge linked to the use of this medication, substantially affecting its clinical applicability and the overall well-being of patients. Therefore, this systematic review aims to comprehensively discuss the GIAEs, providing a basis for clinical therapeutic decisions.

METHODS

We systematically searched 4 independent databases for randomized controlled trials investigating the application of semaglutide in managing type 2 diabetes mellitus. The search period spanned from the inception of the databases to December 2023. We conducted a comprehensive meta-analysis, employing Review Manager 5.4.1 software, to systematically analyze and evaluate potential biases. Our primary emphasis was on assessing the gastrointestinal safety profile of semaglutide.

RESULTS

The outcomes unveiled a noteworthy rise in the collective occurrence of GIAEs across all dosage groups of semaglutide in comparison with the control group (P < .05). Upon further analysis, it was observed that semaglutide showed a heightened occurrence of GIAEs in contrast to the placebo. However, statistically significant distinction was not observed when compared to the reduction of conventional doses or the transition to other types of glucagon-like peptide-1 receptor agonist. Additionally, an extended treatment duration with semaglutide (>30 weeks) demonstrated an association with a certain degree of decrease in the incidence of gastrointestinal events. Funnel plot assessment for publication bias demonstrated high-quality inclusion of studies with no apparent publication bias.

CONCLUSION

The frequency of GIAEs in using semaglutide was observed to be elevated in comparison to the control group. However, it was comparable to other glucagon-like peptide-1 receptor agonist or low-dose treatment regimens. Additionally, an extended treatment duration played a role in decreasing the frequency of GIAEs. These findings provide valuable insights for clinical practice. Nonetheless, further research is crucial to explore supplementary data indicators, informing clinical practices and better serving the interests of patients.

Efficacy and safety of oral semaglutide in type 2 diabetes: A systematic review of real-world evidence

BACKGROUND AND AIMS

Oral semaglutide has undergone global Phase 3 development programs named PIONEER and approved for therapeutic use in people with type 2 diabetes (T2D). We aim to systematically review the efficacy and safety of oral semaglutide in real-world settings.

METHODS

We systematically searched the electronic databases of PubMed, Google Scholar, and ClinicalTrials.gov from inception until March 15, 2024, using several keywords with Boolean "AND". We retrieved all the available granular details of real-world studies (RWS).

RESULTS

To date, results from four prospective and ten retrospective real-world studies of oral semaglutide in T2D are available. In prospective studies, the primary outcome of HbA1c reduction varied from -0.9 % to -1.6 %, weight loss varied from -4.7 kg to -8.2 kg and HbA1c target of <7 % was achieved in 30 %-64 % with oral semaglutide. In retrospective studies, HbA1c reduction varied from -0.4 % to -1.8 %, weight reduction varied from -1.4 to -9.0 kg, HbA1c target of <7 % was achieved in 32-64 %, and 30-41 % of people with T2D had ≥5 % weight loss with oral semaglutide. Gastrointestinal adverse events with oral semaglutide varied from 16 % to 50 % in prospective and 6 %-47 % in retrospective RWS. Overall, 0 %-18 % of patients had oral semaglutide discontinuation due to any cause.

CONCLUSION

Oral semaglutide exhibited a reasonable reduction in HbA1c and weight in people with T2D, consistent with the findings from PIONEER trials. While no new safety issues emerged, the inherent limitations of RWS underscore the necessity of long-term investigations to comprehensively assess safety.

An overview of therapeutic options of obesity management in India: the Integrated Diabetes and Endocrinology Academy (IDEA) 2023 Congress update

INTRODUCTION

With newer anti-obesity medications (AOMs) being introduced at a rapid pace, it is prudent to make a concise and updated clinical practice document that may help busy clinicians in daily clinical practice. A group of metabolic physicians, diabetologists, endocrinologists, and bariatric surgeons assembled during the Integrated Diabetes and Endocrine Academy 2023 Congress (IDEACON, July 2023, Kolkata, India) to compile an update of pharmacotherapeutic options for managing people with obesity in India.

AREAS COVERED

After an extensive review of the literature by experts in different domains, this update provides all available information on the management of obesity, with a special emphasis on both currently available and soon-to-be-available AOMs, in people with obesity.

EXPERT OPINION

Several newer AOMs have been shown to reduce body weight significantly, thus poised to make a paradigm shift in the management of obesity. While the tolerability and key adverse events associated with these AOMs appear to be acceptable in randomized controlled trials, pharmacovigilance is vital in real-world settings, given the absence of sufficiently long-term studies. The easy availability and affordability of these drugs is another area of concern, especially in developing countries like India.

Impact of semaglutide on biochemical and radiologic measures of metabolic-dysfunction associated fatty liver disease across the spectrum of glycaemia: A meta-analysis

BACKGROUND AND AIMS

No meta-analysis has analysed efficacy and safety of semaglutide in metabolic-dysfunction associated fatty-liver disease (MAFLD).

METHODS

Electronic databases were searched for RCTs involving people with MAFLD and/or type-2 diabetes (T2DM) receiving semaglutide. Primary outcome was to evaluate changes in alanine aminotransferase (ALT). Secondary outcomes were to evaluate alterations in other measures of NAFLD, glycaemia, lipids and adverse-events.

RESULTS

Data from 4 RCTs (2115 patients) was analysed. A greater lowering with injectable semaglutide 0.4mg/0.5 mg once weekly was seen with regards to ALT [MD -3.89U/L (95%CI: -5.41 to -2.36); P < 0.01; I² = 0%; 2050 patients], liver stiffness (fibroscan®) [MD -3.19 kPa (95%CI: -3.26 to -3.12); P < 0.01; 162 patients], steatosis [MD -13.40 dB/m (95%CI: 20.56 to -6.24); P < 0.01; 162 patients], triglycerides [MD -21.43 mg/dl (95% CI: 41.63 to -1.23); P = 0.04; I² = 99%; 2050 patients], total cholesterol [MD -5.53 mg/dl (95% CI: -8.45 to -2.61); P < 0.01; I² = 0%; 1888 patients], LDL-cholesterol [MD -3.55 mg/dl (95% CI: -5.87 to -1.23); P < 0.01; I² = 0%; 1888 patients], percent-weight [MD -8.99% (95%CI: -14.64 to -3.34); P = 0.002; I² = 100%; 2115 patient] and HbA1c [MD -0.77% (95%CI: 1.10 to -0.45); P = 0.002; I² = 100%; 2115 patients]. Number of patients inadequate to comment on histopathologic measures of MAFLD. Occurrence of treatment-emergent adverse-events [RR 2.31 (95% CI: 0.76-7.06); P = 0.14; I² = 82%] and severe adverse events [RR 1.07 (95%CI: 0.69-1.65); P = 0.77; I² = 33%] were comparable. Adverse-events leading to trial discontinuation [RR 2.37 (95% CI: 1.33-4.22); P = 0.003; I² = 24%], diarrhea [RR 2.05 (95%CI: 1.17-3.60); P = 0.01; I² = 66%], nausea [RR 4.98 (95%CI: 3.23-7.67); P < 0.001; I² = 0%] and vomiting [RR 3.90 (95%CI: 1.75-8.68); P < 0.01; I² = 54%] were higher with semaglutide.

CONCLUSION

This meta-analysis provides reassuring data on efficacy of low dose semaglutide injections in improving ALT and certain radiologic features in MAFLD. Current conclusions are limited by small number of patients evaluated. Urgent need remains for larger studies focussing on liver biopsy.