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Efficacy of Dapagliflozin in Diabetes Associated Peripheral Neuropathy (DINE)

Primary Purpose

Diabetic Peripheral Neuropathy

Status
Recruiting
Phase
Phase 2
Locations
India
Study Type
Interventional
Intervention
Dapagliflozin 10 milligram
Placebo
Sponsored by
Postgraduate Institute of Medical Education and Research
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Diabetic Peripheral Neuropathy focused on measuring Diabetes, SGLT2 inhibitors, dapagliflozin, CCM, IENFD, Skin Biopsy, Peripheral Neuropathy, Corneal confocal microscopy, intraepithelial nerve fiber density, Diabetic Sensory Polyneuropathy(DSPN), DSPN

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

-

Type 2 Diabetes Mellitus < 5 years duration

Age >18yrs

Presence of neuropathy at baseline (accessed by Michigan Neuropathy Screening Instrument score >7 )

estimated Glomerular Filtration rate (eGFR) > 45ml/min/m2

HBA1c < 9

Exclusion Criteria:

Untreated Hypothyroidism

Patients currently on SGLT2 inhibitors History of Leprosy

Patients with history of and current foot ulcers

Presence of Peripheral Vascular disease(ABI <0.9)

B12(<200 pg/ml)/ Folate (<4.6 ng/ml)

History of alcohol abuse (>2 standard drink per day for males and >1 standard drink for females)

Factors affecting corneal nerves( severe dry eyes, severe corneal dystrophies, ocular trauma or surgery in the preceding 6 months)

Negative consent

-

Sites / Locations

  • Department of Endocrinology, PGIMERRecruiting

Arms of the Study

Arm 1

Arm 2

Arm Type

Active Comparator

Placebo Comparator

Arm Label

The Drug Arm

The Placebo Arm

Arm Description

Dapagliflozin 10 milligram Once a day 1 year

Metformin 1gram Per Oral Twice a day Glimepiride 2 milligram oral twice a day Dipeptidyl peptidase 4 inhibitors (DPP4 inhibitors)

Outcomes

Primary Outcome Measures

Intraepithelial nerve fiber density
mean change in intraepithelial nerve fiber density(F/mm) will be evaluate at baseline and after 24 weeks of treatment with dapagliflozin.

Secondary Outcome Measures

corneal nerve fiber density
mean change in corneal nerve fiber density (total number of nerves per square millimeter of corneal tissue) will be evaluated at baseline and after 24 weeks of treatment with dapagliflozin.

Full Information

First Posted
October 27, 2021
Last Updated
June 2, 2022
Sponsor
Postgraduate Institute of Medical Education and Research
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1. Study Identification

Unique Protocol Identification Number
NCT05162690
Brief Title
Efficacy of Dapagliflozin in Diabetes Associated Peripheral Neuropathy
Acronym
DINE
Official Title
Efficacy of Dapagliflozin in Diabetes Associated Peripheral Neuropathy: A Randomized Placebo Controlled Trial
Study Type
Interventional

2. Study Status

Record Verification Date
June 2022
Overall Recruitment Status
Recruiting
Study Start Date
May 1, 2022 (Actual)
Primary Completion Date
December 31, 2023 (Anticipated)
Study Completion Date
December 31, 2023 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Postgraduate Institute of Medical Education and Research

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Product Manufactured in and Exported from the U.S.
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
Diabetic peripheral neuropathy(DPN) is a length dependent axonal neuropathy that affects at least 50% of patients with diabetes mellitus. DPN is often asymptomatic during the early stages of diabetes ,however, once symptoms and overt deficits have developed, it cannot be reversed. Early diagnosis of neuropathy is important because early diagnosis and timely intervention might prevent the development and progression of diabetic neuropathy.Though glycemic control has been shown to prevent the progression of diabetic microvascular complications including diabetic peripheral neuropathy in Type I DM, such strict glycemic control has not shown to improve diabetic peripheral neuropathy in Type 2 DM. There are only few animal studies conducted so far which have shown that the use of SGLT2 inhibitors prevents the progression of diabetic peripheral neuropathy.Thus the investigators postulate that the use of SGLT2 inhibitor in patients with Type 2 Diabetes Mellitus might be beneficial in the prevention of progression of diabetic peripheral neuropathy as well as reverse it.
Detailed Description
Diabetic peripheral neuropathy is a length dependent axonal neuropathy that affects at least 50% of patients with diabetes mellitus. It is characterized by sensory loss and pain that initially affects small unmyelinated C fibers which is followed by involvement of the large myelinated fibers as diabetes progresses. DPN is often asymptomatic during the early stages of diabetes ,however, once symptoms and overt deficits have developed, it cannot be reversed. Early diagnosis of neuropathy is thus important because early diagnosis and timely intervention might prevent the development and progression if diabetic neuropathy and might provide us with a means to identify patients at high risk for future complications of DPN which includes risk of foot ulcers and lower limb amputation. Methods to quantify neuropathy include clinical scores based on symptoms and neurological tests, quantitative sensory testing, electrophysiological measurements, in the form of nerve conduction studies and intraepidermal nerve fiber density in skin biopsy specimens. The neurological examination involves an assessment, such as modified neuropathy disability score, a composite score that assesses touch, temperature and vibration perception and reflexes, which require expert clinical judgement, a strong element of subjectivity and hence poor reproducibility. Neurophysiology is objective and reproducible and is currently considered to be the most reliable measurements for confirming the diagnosis of diabetic neuropathy. However, these measures mainly assess large nerve fibers, making them less sensitive to early DPN,which is more likely to involve the small fibers to begin with. Objective measures are thus required to accurately determine nerve pathology to detect early stages of DPN, which may be more susceptible to intervention than late-stage sequelae. Small fibers, which constitute 70-90% of peripheral nerve fiber, may be measured in skin biopsies by assessing intraepidermal nerve fiber density, which is considered to be the gold standard for the evaluation of small fibers damage. Indeed, the European Federation of the Neurological Societies and the Peripheral Nerve Society endorse intraepidermal nerve fiber quantification to confirm the clinical diagnosis of small fiber neuropathy with a strong (Level A)recommendation. Recently, corneal confocal microscopy (CCM), a noninvasive modality for the study of the human cornea, has emerged as a promising technique for the detection of small nerve fiber alterations. CCM is a rapid non-invasive imaging technique for the quantitative assessment of small fiber damage. Several studies have shown that it has good diagnostic utility for sub-clinical DPN, predicts incident DPN and correlates with other measures of neuropathy . Furthermore, automated quantification of corneal nerve parameters allows rapid, unbiased and objective assessment of small fiber damage with comparable diagnostic capability to intraepithelial nerve fiber density (IENFD). Recent data also suggest that CCM shows good reproducibility and could be useful to document nerve regeneration after treatment and simultaneous pancreas and kidney transplantation. There is currently no Food and Drug Administration (FDA) approved therapy to prevent or reverse human DPN. The current management approach focuses on reasonable glycemic control, and management of associated pain. Sodium-glucose cotransporter 2 (SGLT2) inhibitors as oral hypoglycemic agents have been approved for treating type 2 diabetes mellitus (T2DM). The insulin-independent action mechanism and extra-metabolic benefits of these agents have encouraged ongoing preclinical and clinical trials for evaluating the efficacy and safety of SGLT2 inhibitors. In addition to glucose-lowering effects without hypoglycemia, SGLT2 inhibitors retard the development and progression of diabetic complications. However, it is uncertain whether this effect of SGLT2 inhibitors is due to their glucose-lowering effect or not. In addition, unlike diabetic nephropathy, the effects of SGLT2 inhibitors on diabetic peripheral neuropathy are unexplored. To date, only three studies regarding the effects of SGLT2 inhibitors for DPN in T2DM animal models are reported. Investigators evaluated neuronal effects in terms of simple functional parameters, such as motor nerve conduction velocity and tail flick test. Results of these studies verified the beneficial effects of SGLT2 inhibitors for DPN, and these effects were considered to indirect effects of the improvement of hyperglycemia. Since no human studies have yet been conducted using SGLT2 inhibitors in the prevention and progression of diabetic neuropathy, hence, investigators plan to conduct a randomized controlled trial evaluating the efficacy of dapagliflozin in diabetic peripheral neuropathy

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Diabetic Peripheral Neuropathy
Keywords
Diabetes, SGLT2 inhibitors, dapagliflozin, CCM, IENFD, Skin Biopsy, Peripheral Neuropathy, Corneal confocal microscopy, intraepithelial nerve fiber density, Diabetic Sensory Polyneuropathy(DSPN), DSPN

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2, Phase 3
Interventional Study Model
Parallel Assignment
Masking
InvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
40 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
The Drug Arm
Arm Type
Active Comparator
Arm Description
Dapagliflozin 10 milligram Once a day 1 year
Arm Title
The Placebo Arm
Arm Type
Placebo Comparator
Arm Description
Metformin 1gram Per Oral Twice a day Glimepiride 2 milligram oral twice a day Dipeptidyl peptidase 4 inhibitors (DPP4 inhibitors)
Intervention Type
Drug
Intervention Name(s)
Dapagliflozin 10 milligram
Intervention Description
10mg per day of Dapagliflozin will be given to the patients
Intervention Type
Other
Intervention Name(s)
Placebo
Intervention Description
Metformin DPP4 inhibitors
Primary Outcome Measure Information:
Title
Intraepithelial nerve fiber density
Description
mean change in intraepithelial nerve fiber density(F/mm) will be evaluate at baseline and after 24 weeks of treatment with dapagliflozin.
Time Frame
24 weeks
Secondary Outcome Measure Information:
Title
corneal nerve fiber density
Description
mean change in corneal nerve fiber density (total number of nerves per square millimeter of corneal tissue) will be evaluated at baseline and after 24 weeks of treatment with dapagliflozin.
Time Frame
24 weeks

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: - Type 2 Diabetes Mellitus < 5 years duration Age >18yrs Presence of neuropathy at baseline (accessed by Michigan Neuropathy Screening Instrument score >7 ) estimated Glomerular Filtration rate (eGFR) > 45ml/min/m2 HBA1c < 9 Exclusion Criteria: Untreated Hypothyroidism Patients currently on SGLT2 inhibitors History of Leprosy Patients with history of and current foot ulcers Presence of Peripheral Vascular disease(ABI <0.9) B12(<200 pg/ml)/ Folate (<4.6 ng/ml) History of alcohol abuse (>2 standard drink per day for males and >1 standard drink for females) Factors affecting corneal nerves( severe dry eyes, severe corneal dystrophies, ocular trauma or surgery in the preceding 6 months) Negative consent -
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Ashu Rastogi, MD, DM
Phone
9781001046
Email
rastogi.ashu@pgi.ac.in
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Ashu Rastogi, DM
Organizational Affiliation
PGIMER, India
Official's Role
Principal Investigator
Facility Information:
Facility Name
Department of Endocrinology, PGIMER
City
Chandigarh
ZIP/Postal Code
160012
Country
India
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Ashu Rastogi, DM
Phone
9781001046
Email
rastogi.ashu@pgimer.ac.in

12. IPD Sharing Statement

Plan to Share IPD
No

Learn more about this trial

Efficacy of Dapagliflozin in Diabetes Associated Peripheral Neuropathy

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