Background: Guidelines suggest setting individualised targets for glycaemic control in elderly patients with type 2 diabetes, despite no evidence. We aimed to assess the feasibility of setting and achieving individualised targets over 24 weeks along with conventional HbA1c reduction using vildagliptin versus placebo.
Methods: In this multinational, double-blind, 24 week study, we enrolled drug-naive or inadequately controlled (glycosylated haemoglobin A1c [HbA1c] ≥7·0% to ≤10·0%) patients with type 2 diabetes aged 70 years or older from 45 outpatient centres in Europe. Investigators set individualised treatment targets on the basis of age, baseline HbA1c, comorbidities, and frailty status before a validated automated system randomly assigned patients (1:1) to vildagliptin (50 mg once or twice daily as per label) or placebo. Coprimary efficacy endpoints were proportion of patients reaching their investigator-defined HbA1c target and HbA1c reduction from baseline to study end. The study is registered with ClinicalTrials.gov, number NCT01257451, and European Union Drug Regulating Authorities Clinical Trials database, number 2010-022658-18.
Findings: Between Dec 22, 2010, and March 14, 2012, we randomly assigned 139 patients each to the vildagliptin and placebo groups. 37 (27%) of 137 patients in the placebo group achieved their individualised targets by education and interactions with the study team alone and 72 (52·6%) of 137 patients achieved their target in the vildagliptin group (adjusted odds ratio 3·16, 96·2% CI 1·81-5·52; p<0·0001). This finding was accompanied by a clinically relevant 0·9% reduction in HbA1c from a baseline of 7·9% with vildagliptin and a between-group difference of -0·6% (98·8% CI -0·81 to -0·33; p<0·0001). The overall safety and tolerability was similar in the vildagliptin and placebo groups, with low incidence of hypoglycaemia and no emergence of new safety signals.
Interpretation: This study is the first to introduce and show the feasibility of using individualised HbA1c targets as an endpoint in any type 2 diabetes population. Individualised glycaemic target levels are achievable with vildagliptin without any tolerability issues in the elderly type 2 diabetes population.
Funding: Novartis Pharma AG.
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