NEW ORLEANS (FRONTLINE MEDICAL NEWS) – Insulin glargine 300 U/mL provided comparable glycemic control to that seen with insulin glargine 100 U/mL and consistently reduced the risk of nocturnal hypoglycemia in patients with type 2 diabetes, regardless of their renal function, results from a large post hoc meta-analysis showed.

The EDITION I, II , and III studies showed that over a period of 6 months, Gla-300 provided comparable glycemic control to Gla-100 with less hypoglycemia in patients with type 2 diabetes. However, “renal impairment increases the risk of hypoglycemia in people with type 2 diabetes, and may limit glucose-lowering therapy options,” Javier Escalada, M.D., said at the annual scientific sessions of the American Diabetes Association. “Therefore, it may be more challenging to manage diabetes in this population than in people with normal renal function.”

Dr. Escalada of the department of endocrinology and nutrition at Clinic University of Navarra, Pamplona, Spain, and his associates set out to investigate the impact of renal function on hemoglobin A1c reduction and hypoglycemia in a post hoc meta-analysis of 2,468 patients aged 18 years and older with type 2 diabetes who were treated with Gla-300 or Gla-100 for 6 months in the EDITION I, II, and III studies. Treatment consisted of once-daily evening doses of Gla-300 or Gla-100 titrated to a fasting self-measured plasma glucose of 80-100 mg/dL. Patients were classified by their renal function as having moderate loss (30 to less than 60 mL/min per 1.73 m3; 399 patients), mild loss (60 to less than 90; 1,386 patients), or normal function (at least 90; 683 patients).

Outcomes of interest were change in HbA1c from baseline to month 6, and the percentages of patients achieving an HbA1c target of lower than 7.0% and lower than 7.5% at month 6. The researchers also assessed the cumulative number of hypoglycemic events, the relative risk of at least one confirmed or severe hypoglycemic event, and the nocturnal and at any time event rate per participant year.

Slightly more than half of participants (56%) had a baseline estimated glomerular filtration rate of 60 to less than 90 mL/min per 1.73 m3. Dr. Escalada reported that noninferiority for HbA1c reduction was shown for Gla-300 and Gla-100 regardless of renal function, and that evidence of heterogeneity of treatment effect across subgroups was observed (P = .46). However, the risk of confirmed or severe hypoglycemia was significantly lower for nocturnal events in the Gla-300 group, compared with the Gla-100 group (30% vs. 40% overall, respectively), while the risk of anytime hypoglycemia events in a 24-hour period was comparable to or lower in the Gla-300 group, compared with the Gla-100 group. Renal function did not affect the lower rate of nocturnal or anytime hypoglycemia. “Severe hypoglycemia was rare, and renal function did not affect the rate of severe events,” he said.

The trial was sponsored by Sanofi. Dr. Escalada disclosed that he is a member of the advisory panel for Sanofi and for Merck Sharp & Dohme. He is also a member of the speakers bureau for both companies as well as for AstraZeneca, Boehringer Ingelheim, Eli Lilly, and Novo Nordisk.