NCT02098980

Brief Summary

There is an association between elevated Type II Diabetes Mellitus (T2DM) risk and low serum levels of vitamin D. It is important to examine whether Vitamin D can enhance oral glucose tolerance in individuals at risk for developing T2DM. As such, the hypothesis suggested is that Vitamin D supplementation (4,000 IU/day) for 24 weeks in pre-diabetic individuals will decrease insulin resistance and the associated metabolic indices linked to the later development of T2DM.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
200

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started May 2014

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 20, 2014

Completed
8 days until next milestone

First Posted

Study publicly available on registry

March 28, 2014

Completed
1 month until next milestone

Study Start

First participant enrolled

May 1, 2014

Completed
3.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2017

Completed
Last Updated

February 4, 2016

Status Verified

February 1, 2016

Enrollment Period

3.6 years

First QC Date

March 20, 2014

Last Update Submit

February 3, 2016

Conditions

Outcome Measures

Primary Outcomes (1)

  • Insulin Resistance

    6 months

Study Arms (2)

Dietary Supplement: Vitamin D

ACTIVE COMPARATOR

Vitamin D supplement 4000 IU/day for 6 months

Dietary Supplement: Vitamin D

Placebo

PLACEBO COMPARATOR

Placebo for 6 months

Dietary Supplement: Vitamin D

Interventions

Vitamin DDIETARY_SUPPLEMENT
Also known as: Placebo
Dietary Supplement: Vitamin DPlacebo

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • male or non-pregnant, non-lactating females, aged 18-75
  • volunteered to participate by signing the consent form
  • BMI ˂ 40kg/ m2
  • serum 25(OH) vitamin D3 (25(OH)D) concentration ˂75nmol/L
  • fasting serum glucose \<7.0 mmol/L
  • HOMA insulin resistance index ≥1.3
  • presence of any ONE OR MORE of the following risk factors for type 2 diabetes:
  • high BMI (\>23)
  • high waist circumference according to IDF ethnic specific values for non- Caucasian (females \>80cm; males \>90cm)
  • family history of diabetes in first-degree relative (parent or sibling)
  • previous history of gestational diabetes
  • history of high blood glucose, high triglycerides and/or low HDL cholesterol

You may not qualify if:

  • fasting serum glucose ≥7.0mmol/L
  • history of renal failure or liver disease
  • serum urea or creatinine \>1.8 times upper limit of normal (ULN)
  • serum aspartate or alanine transaminase (AST,ALT) \>1.5 times ULN
  • current use of drug or drugs to treat diabetes or which influence glucose metabolism
  • medical or surgical event requiring hospitalization within 3 months of randomization
  • presence of any condition affecting nutrient absorption

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Hamad Medical Corporation

Doha, Qatar

RECRUITING

Related Publications (1)

  • Al Thani M, Sadoun E, Sofroniou A, Jayyousi A, Baagar KAM, Al Hammaq A, Vinodson B, Akram H, Bhatti ZS, Nasser HS, Leventakou V. The effect of vitamin D supplementation on the glycemic control of pre-diabetic Qatari patients in a randomized control trial. BMC Nutr. 2019 Oct 10;5:46. doi: 10.1186/s40795-019-0311-x. eCollection 2019.

MeSH Terms

Conditions

Insulin Resistance

Interventions

Vitamin D

Condition Hierarchy (Ancestors)

HyperinsulinismGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic Diseases

Intervention Hierarchy (Ancestors)

SecosteroidsSteroidsFused-Ring CompoundsPolycyclic Compounds

Study Officials

  • Mohamed Al-Thani, Ph.D.

    Supreme Council of Health

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Mohamed Al-Thani, Ph.D.

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Intervention Model
PARALLEL
Sponsor Type
OTHER GOV
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Doctor

Study Record Dates

First Submitted

March 20, 2014

First Posted

March 28, 2014

Study Start

May 1, 2014

Primary Completion

December 1, 2017

Study Completion

December 1, 2017

Last Updated

February 4, 2016

Record last verified: 2016-02

Locations