Insulin degludec does not increase antibody formation versus insulin glargine: an evaluation of phase IIIa trials

J Vora, J Seufert, H Solberg, O Kinduryte, T Johansen, P Hollander, J Vora, J Seufert, H Solberg, O Kinduryte, T Johansen, P Hollander

Abstract

We examined insulin antibody formation in patients with type 1 (T1D) or type 2 diabetes (T2D) treated with once-daily insulin degludec (IDeg) or insulin glargine (IGlar) to evaluate the impact of antibody formation on efficacy and safety. Insulin antibodies were measured using subtraction radioimmunoassays in six phase IIIa clinical trials using IDeg (n = 2250) and IGlar (n = 1184). Spearman's correlation coefficient was used to evaluate associations between cross-reacting antibodies and change from baseline glycated haemoglobin (HbA1c) and insulin dose. IDeg- and IGlar-specific antibodies remained low [<1% bound/total radioactivity (B/T)] and with low levels of antibodies cross-reacting with human insulin in patients with T1D (<20% B/T) and T2D (<6% B/T). Spearman's correlation coefficients between insulin antibody levels and change in HbA1c or insulin dose were low in both treatment groups. No clinically meaningful differences in adverse event (AE) rates were observed in patients with >10% B/T or without an absolute increase in antibodies cross-reacting with human insulin. IDeg treatment resulted in few immunogenic responses in patients with T1D and T2D; antibody formation was not associated with change in HbA1c, insulin dose or rates of AEs.

Keywords: insulin antibodies; insulin degludec; long-acting insulin; type 1 diabetes; type 2 diabetes.

© 2015 The Authors. Diabetes, Obesity and Metabolism published by John Wiley & Sons Ltd.

Figures

Figure 1
Figure 1
Cross‐reacting antibody levels to human insulin (HI) over time in patients with (A) type 1 diabetes (BEGIN Basal‐Bolus Type 1 Long [3583] 10) and (B) type 2 diabetes (BEGIN Once Long [3579] 12). Antibody levels were measured at week 0 (baseline), week 12, week 26, week 40, week 52 (end of trial, EOT) and week 53 (end of follow‐up, EOF) after a 1‐week washout period. Patients were treated with NPH insulin during the washout period to minimize interference of trial drugs with the antibody assay. Dark blue circles = insulin degludec (IDeg)‐treated patients; light blue diamonds = insulin glargine (IGlar)‐treated patients. Data are presented as mean ± standard error of the mean.

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Source: PubMed

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