Initiation of iGlarLixi Versus Basal-Bolus Insulin in Adults With Type 2 Diabetes Advancing From Basal Insulin Therapy: The SoliComplex Real-World Study

Abstract

<p> </p> <p><strong>Background.</strong> When type 2 diabetes is suboptimally controlled with basal insulin, prandial insulin injections are commonly added (i.e., a basal-bolus insulin regimen), which can increase treatment burden and hypoglycemia risk. The once-daily injectable iGlarLixi is an alternative treatment. </p> <p><strong>Methods.</strong> This retrospective analysis of the U.S. Optum Clinformatics database compared outcomes in adults (≥18 years of age) with type 2 diabetes who previously received basal insulin and were newly initiated on iGlarLixi or basal-bolus insulin therapy. Cohorts were propensity score–matched in a 1:1 ratio on baseline characteristics, and imbalances were adjusted in multivariate analyses. Subgroup analyses were performed for people ≥65 years of age and those with a baseline A1C ≥9%. The primary endpoint was persistence with therapy at 12 months in the overall population. Secondary end points were treatment adherence, health care resource utilization (HCRU), costs, any hypoglycemia, and A1C change at 12 months.</p> <p><strong>Results.</strong> Cohorts each comprised 1,070 participants. Treatment persistence at 12 months was statistically significantly higher for iGlarLixi versus basal-bolus insulin therapy (43.7 vs. 22.3%, hazard ratio 0.51, 95% CI 0.46–0.57, adjusted <em>P </em><0.001). Adherence was numerically higher for iGlarLixi, and hypoglycemia events, HCRU, and costs were numerically lower for iGlarLixi. A1C reduction from baseline was slightly greater for basal-bolus insulin. Results for both subgroups (≥65 years of age and baseline A1C ≥9%) were similar to those of the overall population.</p> <p><strong>Conclusion.</strong> In this observational study, initiation of once-daily iGlarLixi versus basal-bolus insulin was associated with higher persistence, lower hypoglycemia, and similar A1C reduction without increasing HCRU or costs regardless of age or A1C. iGlarLixi could be an alternative to basal-bolus insulin, particularly for older adults with type 2 diabetes who require treatment simplification with lower hypoglycemia risk.</p>