Effects of Benfotiamine on Intraepidermal Nerve Fiber Density (IENFD)and Diabetic Neuropathy in Subjects With Sensorimotor Diabetic Polyneuropathy: a Double-blind, Randomized, Placebo-controlled Parallel Group Pilot Study Over 12 Months.
Trial Snapshot
- Phase
- Phase 3
- Sponsor
- Enrollment
- 22
- Locations
- 1
- Primary Endpoint
- Change from baseline in intraepidermal nerve fiber density
Study Overview
Brief Summary
The aim of the present study is to assess before, as well as 6 and 12 months following a therapy with benfotiamine the influence of therapy on intraepidermal nerve fiber density (skin biopsy) and neuropathic symptoms and deficits in people with type 1 or 2 diabetes mellitus and diabetic sensomotoric neuropathy.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Treatment
- Masking
- Double (Participant, Investigator)
Eligibility Criteria
- Ages
- 18 Years to 75 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •Have type 1 or type 2 diabetes mellitus based on the disease diagnostic criteria (WHO) classification on ongoing insulin or/and oral antidiabetic therapy with a stable regimen for the previous 3 months
- •Male or female subjects aged between 18 and 75 years, inclusive
- •Have an HbA1c level ≤ 9.5% without optimizing potential
- •mTCNS (modified Toronto Clinical Neuropathy Score) ≥ (above or equal to) 6) OR (a score on the MNSI (Michigan Neuropathy Screening Instrument)questionnaire of ≥4 or a score on the MNSI examination ≥2.5)
- •Medical history without major pathology (with the exception of type 2 diabetes) as judged by the investigator, especially no major peripheral artery disease.
- •Body mass index (BMI) between 25 and 45kg/m2, both inclusive
Exclusion Criteria
- •Subjects with secondary forms of diabetes such as due to pancreatitis.
- •Current or previous treatment (less than 6 months) with benfotiamine, B-vitamins, vitamin B complex, alpha lipoic acid or actovegin.
- •Have any contraindications, known allergy, or hypersensitivity to benfotiamine.
- •Have any contraindications, known allergy, or hypersensitivity to local anesthetics.
- •Neuropathy by other origin than diabetes.
- •Other severe pain that might impair the assessment of neuropathic pain.
- •Treatment with more than one of following: tricyclic antidepressants, serotonin norepinephrine reuptake inhibitors, anticonvulsants, class I antiarrhythmics with Na-channel inhibition (mexiletine, flecainid, propafenon and others) or neuroleptics in patients receiving these drugs for neuropathic pain.
Arms & Interventions
Placebo for benfotiamine
Placebo for benfotiamine 600 mg/day for the first 3 months followed by 300 mg/day for 9 months
Intervention: Placebo for benfotiamine (Drug)
Benfotiamine
Treatment with benfotiamine 600 mg/day for 3 months followed by 300 mg/day for 9 months
Intervention: Benfotiamine (Drug)
Outcomes
Primary Outcomes
Change from baseline in intraepidermal nerve fiber density
Time Frame: 6 and 12 months
Secondary Outcomes
- Change in neuropathic deficits(3, 6 and 12 months)
- Change in neuropathic symptoms(3, 6 and 12 months)
Investigators
Ovidiu Alin Stirban
Dr. med.
Diabetes Schwerpunktpraxis
