Current and Future Strategies in Insulin Development and Treatment.

Background: Recent advances in insulin research open new avenues for treatment, both, for type 1 and type 2 diabetes. In developed countries, standardized "ultra-rapid-acting insulins" are now also used in addition to rapid-acting insulins. First- and second-generation basal analogs are available. Third-generation basal analogs, which only need to be applied once a week, are in the pipeline.

Summary: Second-generation "ultra-rapid-acting insulins" insulins with faster onset and offset of action may be particularly useful for multiple daily injections and automated insulin delivery systems. An improved time-action profile of bolus insulin would be able to cover the rapid increase in glucose after meals with a rapid fall thereafter to avoid postprandial hypoglycemia. The third-generation basal insulins allowing once-weekly dosing made major steps toward becoming a clinical reality. However, issues with insulin affordability and availability remain problematic even in more affluent countries. Biosimilar insulins products can provide people with additional safe, high-quality, and potentially cost-effective options for treating diabetes. Particularly in low-middle income countries insulin therapy is facing issues not only of access but also storage, lack of diabetes education, and stigma.

Key message: With the new bolus insulins, the physiological insulin secretion pattern can be mimicked better and better and hypoglycemia can be avoided. With the ever longer pharmacokinetic action profiles of the basal analogs, the injection frequency is reduced, which leads to better adherence and quality of life, but these insulins are not available for everyone who needs it worldwide.