SGLT2 Inhibitors as Add-On Therapy to Metformin for People with Type 2 Diabetes: A Review of Placebo-Controlled Trials in Asian versus Non-Asian Patients

André J Scheen1,2 1Diabetes, Nutrition and Metabolic Disorders, Department of Medicine, CHU Liège, Liège University, Liège, Belgium; 2Clinical Pharmacology Unit, CHU Liège, Center for Interdisciplinary Research on Medicines (CIRM), Li&egrave...

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spelling oai:doaj.org-article:22b69cc7d942447788c0e405d101010e2021-12-02T03:27:04ZSGLT2 Inhibitors as Add-On Therapy to Metformin for People with Type 2 Diabetes: A Review of Placebo-Controlled Trials in Asian versus Non-Asian Patients1178-7007https://doaj.org/article/22b69cc7d942447788c0e405d101010e2020-08-01T00:00:00Zhttps://www.dovepress.com/sglt2-inhibitors-as-add-on-therapy-to-metformin-for-people-with-type-2-peer-reviewed-article-DMSOhttps://doaj.org/toc/1178-7007André J Scheen1,2 1Diabetes, Nutrition and Metabolic Disorders, Department of Medicine, CHU Liège, Liège University, Liège, Belgium; 2Clinical Pharmacology Unit, CHU Liège, Center for Interdisciplinary Research on Medicines (CIRM), Liège University, Liège, BelgiumCorrespondence: André J Scheen Email andre.scheen@chuliege.beAbstract: Metformin remains the first pharmacological choice for treating hyperglycemia in type 2 diabetes (T2DM) in most international guidelines. Sodium-glucose cotransporter type 2 inhibitors (SGLT2is) are increasingly used as add-on therapy. T2DM pathophysiology is different in Asian and non-Asian (mainly Caucasian) patients. The aim of this systematic review is to compare the efficacy of SGLT2is vs placebo added to metformin in randomized controlled trials (RCTs: range 12– 52 weeks) in Asian versus non-Asian patients with T2DM. The primary endpoint is the reduction in glycated hemoglobin (HbA1c) from baseline and key secondary endpoints are reductions in fasting plasma glucose (FPG), body weight (BW) and systolic blood pressure (SBP). Systematic literature search collected 7 RCTs (3 with 2 doses) in Asian patients (10 analyses, n=1164, iSGLT2: canagliflozin, dapagliflozin, ertugliflozin, ipragliflozin, tofogliflozin)) and 10 RCTs (6 with two doses) in non-Asian patients (16 analyses, n=2482, iSGLT2: canagliflozin, dapagliflozin, empagliflozin, ertugliflozin, ipragliflozin). Baseline values of HbA1c (7.98± 0.19 vs 7.89± 0.27%), FPG (8.80 ± 0.46 vs 9.11± 0.49 mmol/l) and SBP (128.4± 1.6 vs 130.2± 3.1 mmHg) were not significantly different in Asian vs non-Asian patients, but BW was lower in Asian patients (71.6± 4.8 vs 88.0± 2.5 kg, p< 0.001). The placebo-adjusted weighed mean differences (WMD, 95% CI) were similar in Asian versus non-Asian patients regarding the reductions in HbA1c − 0.60 (− 0.68, − 0.53) % versus − 0.54 (− 0.59, − 0.49) % (p=0.568), FPG − 1.37 (− 1.53, − 1.22) mmol/l vs − 1.37 (− 1.47, − 1.27) mmol/l (p=0.627), BW when expressed in percentage of baseline BW − 2.23 (− 2.55, − 1.90) % vs − 2.16 (− 2.37, − 1.96) % (p=0.324), and SBP − 4.53 (− 5.53, − 3.53) mmHg vs − 4.06 (− 4.83, − 3.29) mmHg) (p=0.223). In conclusion, clinical efficacy of SGLT2i, as an add-on treatment to metformin monotherapy in patients with T2DM, is similar in Asian versus non-Asian patients, despite known ethnic differences in phenotype and pathophysiology of T2DM.Keywords: blood pressure, body weight, combined therapy, glucose control, HbA1c, oral antidiabetic drugScheen AJDove Medical Pressarticleblood pressurebody weightcombined therapyglucose controlhba1coral antidiabetic drugSpecialties of internal medicineRC581-951ENDiabetes, Metabolic Syndrome and Obesity: Targets and Therapy, Vol Volume 13, Pp 2765-2779 (2020)
institution DOAJ
collection DOAJ
language EN
topic blood pressure
body weight
combined therapy
glucose control
hba1c
oral antidiabetic drug
Specialties of internal medicine
RC581-951
spellingShingle blood pressure
body weight
combined therapy
glucose control
hba1c
oral antidiabetic drug
Specialties of internal medicine
RC581-951
Scheen AJ
SGLT2 Inhibitors as Add-On Therapy to Metformin for People with Type 2 Diabetes: A Review of Placebo-Controlled Trials in Asian versus Non-Asian Patients
description André J Scheen1,2 1Diabetes, Nutrition and Metabolic Disorders, Department of Medicine, CHU Liège, Liège University, Liège, Belgium; 2Clinical Pharmacology Unit, CHU Liège, Center for Interdisciplinary Research on Medicines (CIRM), Liège University, Liège, BelgiumCorrespondence: André J Scheen Email andre.scheen@chuliege.beAbstract: Metformin remains the first pharmacological choice for treating hyperglycemia in type 2 diabetes (T2DM) in most international guidelines. Sodium-glucose cotransporter type 2 inhibitors (SGLT2is) are increasingly used as add-on therapy. T2DM pathophysiology is different in Asian and non-Asian (mainly Caucasian) patients. The aim of this systematic review is to compare the efficacy of SGLT2is vs placebo added to metformin in randomized controlled trials (RCTs: range 12– 52 weeks) in Asian versus non-Asian patients with T2DM. The primary endpoint is the reduction in glycated hemoglobin (HbA1c) from baseline and key secondary endpoints are reductions in fasting plasma glucose (FPG), body weight (BW) and systolic blood pressure (SBP). Systematic literature search collected 7 RCTs (3 with 2 doses) in Asian patients (10 analyses, n=1164, iSGLT2: canagliflozin, dapagliflozin, ertugliflozin, ipragliflozin, tofogliflozin)) and 10 RCTs (6 with two doses) in non-Asian patients (16 analyses, n=2482, iSGLT2: canagliflozin, dapagliflozin, empagliflozin, ertugliflozin, ipragliflozin). Baseline values of HbA1c (7.98± 0.19 vs 7.89± 0.27%), FPG (8.80 ± 0.46 vs 9.11± 0.49 mmol/l) and SBP (128.4± 1.6 vs 130.2± 3.1 mmHg) were not significantly different in Asian vs non-Asian patients, but BW was lower in Asian patients (71.6± 4.8 vs 88.0± 2.5 kg, p< 0.001). The placebo-adjusted weighed mean differences (WMD, 95% CI) were similar in Asian versus non-Asian patients regarding the reductions in HbA1c − 0.60 (− 0.68, − 0.53) % versus − 0.54 (− 0.59, − 0.49) % (p=0.568), FPG − 1.37 (− 1.53, − 1.22) mmol/l vs − 1.37 (− 1.47, − 1.27) mmol/l (p=0.627), BW when expressed in percentage of baseline BW − 2.23 (− 2.55, − 1.90) % vs − 2.16 (− 2.37, − 1.96) % (p=0.324), and SBP − 4.53 (− 5.53, − 3.53) mmHg vs − 4.06 (− 4.83, − 3.29) mmHg) (p=0.223). In conclusion, clinical efficacy of SGLT2i, as an add-on treatment to metformin monotherapy in patients with T2DM, is similar in Asian versus non-Asian patients, despite known ethnic differences in phenotype and pathophysiology of T2DM.Keywords: blood pressure, body weight, combined therapy, glucose control, HbA1c, oral antidiabetic drug
format article
author Scheen AJ
author_facet Scheen AJ
author_sort Scheen AJ
title SGLT2 Inhibitors as Add-On Therapy to Metformin for People with Type 2 Diabetes: A Review of Placebo-Controlled Trials in Asian versus Non-Asian Patients
title_short SGLT2 Inhibitors as Add-On Therapy to Metformin for People with Type 2 Diabetes: A Review of Placebo-Controlled Trials in Asian versus Non-Asian Patients
title_full SGLT2 Inhibitors as Add-On Therapy to Metformin for People with Type 2 Diabetes: A Review of Placebo-Controlled Trials in Asian versus Non-Asian Patients
title_fullStr SGLT2 Inhibitors as Add-On Therapy to Metformin for People with Type 2 Diabetes: A Review of Placebo-Controlled Trials in Asian versus Non-Asian Patients
title_full_unstemmed SGLT2 Inhibitors as Add-On Therapy to Metformin for People with Type 2 Diabetes: A Review of Placebo-Controlled Trials in Asian versus Non-Asian Patients
title_sort sglt2 inhibitors as add-on therapy to metformin for people with type 2 diabetes: a review of placebo-controlled trials in asian versus non-asian patients
publisher Dove Medical Press
publishDate 2020
url https://doaj.org/article/22b69cc7d942447788c0e405d101010e
work_keys_str_mv AT scheenaj sglt2inhibitorsasaddontherapytometforminforpeoplewithtype2diabetesareviewofplacebocontrolledtrialsinasianversusnonasianpatients
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