CONFERENCE UPDATE: EASD 2023

Combined antiviral treatment of pleconaril and ribavirin decelerates the development of newly diagnosed type 1 diabetes in adolescent populations: Results from the DiViD Intervention study

STUDY DESIGN

The association between enterovirus infections and the onset of type 1 diabetes mellitus (T1D) was evident as the results of a recently published meta-analysis suggested that patients with T1D were 16 times more likely to experience enterovirus infections when compared to healthy controls.1 In addition, pancreatic tissue samples collected from 6 patients with recent T1D onset in the Diabetes Virus Detection (DiViD) study indicated a low-grade enterovirus infection and antiviral response across all cases.1 As such, a few speculations emerged regarding the potential link between enteroviruses and the progression of T1D.

The DiViD Intervention study was a randomized, placebo-controlled, double-blind, clinical trial conducted to assess the effect of antiviral treatment on beta cell function in children and adolescents with recent onset of T1D.1 A total of 96 patients aged 6 to 16 years with T1D who received their first insulin injection within 3 weeks prior to study inclusion were randomized to receive oral solutions of pleconaril (10mg/kg/day) and ribavirin (15mg/kg/day) (n=47) or placebo (n=49) twice daily for 26 weeks.1

The primary endpoint of this study was the endogenous insulin production at 12 months, measured by the 2h C-peptide area under the curve (AUC) during a mixed meal tolerance test (MMTT).1 Secondary endpoints included safety, the proportion of patients with a peak C-peptide of >0.2pmol/ml, as well as changes in HbA1c and glycated albumin levels from the baseline.1

Primary endpoints: 
  • The primary endpoint was the endogenous insulin production at 12 months, measured by the 2h C-peptide AUC during a MMTT1
  • The relative reduction in C-peptide AUC was significantly lower in the antiviral group compared to the placebo group at 12 months after treatment initiation (11% vs. 24%; average marginal effect [AME]: 0.057; p=0.037)1
Secondary endpoint:
  • Secondary endpoints included the proportion of patients with a C-peptide peak of >0.2pmol/mL at 12 months, as well as changes in HbA1c and glycated albumin levels from the baseline1
  • At 12 months, a significantly higher percentage of patients in the antiviral group retained a C-peptide peak of >0.2pmol/mL when compared to their placebo counterpart (86% vs. 67%; p=0.04)1
  • Compared to the placebo group, patients from the antiviral group had a significantly greater reduction in HbA1c levels from baseline at 12 months (p<0.0001)1
  • There were no significant differences in glycated albumin between the two groups at baseline, 3, 6, and 12 months1
  • Insulin dose and the frequency of hypoglycemia were similar between the treatment groups1
Safety:
  • Overall, the combination of pleconaril and ribavirin was well-tolerated among patients with T1D1
  • There were no severe adverse events (AEs) with antiviral treatment and no differences in the frequency of intercurrent infections between the two groups1
  • The antiviral group had a slightly higher percentage of patients with suppressed haptoglobin when compared to the placebo group1

 

“These results strengthen the possible link between enteroviruses and the development of T1D and provide a rationale for further evaluating antiviral strategies in the treatment of newly diagnosed T1D and prevention of prediabetes progression”

Dr. Ida Maria Mynarek
Oslo University Hospital,
Oslo, Norway

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