Original Article
Comparative efficacy and safety of two glargine insulins in Chinese patients with type 2 diabetes mellitus in different baseline glycated hemoglobin A1c: a post hoc analysis of ABET study in China
Jing Yali, Wang Weimin, Tong Guoyu, Feng Chen, Du Liying, Zhu Dalong
Published 2023-03-20
Cite as Chin J Diabetes Mellitus, 2023, 15(3): 216-222. DOI: 10.3760/cma.j.cn115791-20220512-00213
Abstract
ObjectiveTo evaluate the similarity of efficacy and safety of two glargine insulins in Chinese patients with type 2 diabetes mellitus (T2DM) who had different baseline levels of glycated hemoglobin A1c (HbA1c).
MethodsThe I4L-GH-ABET (ABET) study was a 24-week, randomized, controlled, open-label phase 3 study in China. The Chinese patients with T2DM that included 536 patients with T2DM from 32 centers in China were enrolled from March 22, 2018 to March 18, 2020. Patients were randomly assigned in a 2∶1 ratio to the LY IGlar group (insulin glargine LY2963016, 359 patients) or the IGlar group (insulin glargine Lantus®, 177 patients) using the interactive web response system method. This study was a subgroup analysis of the ABET study, in which the study subjects were stratified into baseline HbA1c<8.5% subgroup (319 cases, 214 cases in LY IGlar and 105 cases in IGlar group) and baseline HbA1c≥8.5% subgroup (217 cases, 145 cases in IGlar group and 72 cases in IGlar group) according to baseline HbA1c levels, to compare the similarity of LY IGlar and IGlar group in efficacy and safety. Efficacy endpoints included the change in HbA1c from baseline to 24 weeks, seven-point self-monitoring of blood glucose (7-SMBG) and fast plasma glucose (FPG), weight change from baseline and insulin dose at week 24. Safety endpoints included hypoglycemia, the incidence of treatment-emergent adverse events (TEAE), serious adverse events, and the proportion of patients with a treatment-emergent antibody response (TEAR). Repeated-measures mixed-effects models were used to assess efficacy endpoints. The Mantel-Haenszel test and Breslow Day test were used to assess safety.
ResultsBaseline characteristics of patients treated with LY IGlar and IGlar were similar in the baseline HbA1c<8.5% subgroup and baseline HbA1c≥8.5% subgroup. Compared to baseline HbA1c<8.5% subgroup, patients in the HbA1c≥8.5% subgroup had a higher decrease in HbA1c at week 24 compared to baseline, but the decrease in HbA1c was similar in both treatment groups [baseline HbA1c<8.5% subgroup: the least squares mean (LSM) of LY IGlar group and IGlar group were -0.82% and -0.75%, respectively, P=0.377; baseline HbA1c≥8.5% subgroup: LSM was -1.95% and -1.94%, respectively, P=0.932]. At week 24, 7-SMBG, FPG and weight change from baseline were similar in both HbA1c subgroups. At week 24, basal insulin dose was similar in both subgroups. During the 24-week treatment period, in both treatment groups, no significant statistical difference in the incidence of overall hypoglycemia [baseline HbA1c<8.5% subgroup: LY IGlar group was 56.1% (120/214), IGlar group was 60.0% (63/105), P=0.506; baseline HbA1c≥8.5% subgroup, LY IGlar group was 41.4% (60/145), IGlar group was 45.8% (33/72), P=0.533] and nocturnal hypoglycemia [baseline HbA1c<8.5% subgroup: LY IGlar group was 15.9% (34/214), IGlar group was 14.3% (15/105), P=0.710; baseline HbA1c≥8.5% subgroup: LY IGlar group was 7.6% (11/145), IGlar group was 9.7% (7/72), P=0.592], and no severe hypoglycemic events were reported. There was no significant difference between the two treatment groups in the incidence of TEAE and serious adverse events, as well as the proportion of patients with TEAR during treatment (P>0.05). There were no significant treatment-HbA1c subgroup interactions for clinical efficacy and safety outcomes between subgroups of HbA1c<8.5% and≥8.5% (P>0.05).
ConclusionLY IGlar and IGlar have similar efficacy and safety in Chinese patients with T2DM who had difference baseline HbA1c level (<8.5% and ≥8.5%).
Key words:
Diabetes mellitus, type 2; Insulin glargine; Efficacy; Safety
Contributor Information
Jing Yali
Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China
Wang Weimin
Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China
Tong Guoyu
Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China
Feng Chen
Lilly Suzhou Pharmaceutical Co., Ltd, Shanghai 200041, China
Du Liying
Lilly Suzhou Pharmaceutical Co., Ltd, Shanghai 200041, China
Zhu Dalong
Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing 210008, China