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Prevalence of Vitamin D Deficiency in Type 1 Diabetes Mellitus and Effect of Supplementation on Insulin Requirements

Prevalence of Vitamin D Deficiency in Type 1 Diabetes Mellitus and Effect on Insulin Requirements After Supplementation With Vitamin D-A Pilot Study

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01029392
Enrollment
75
Registered
2009-12-10
Start date
2009-11-30
Completion date
2012-06-30
Last updated
2017-04-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Type 1 Diabetes Mellitus

Keywords

Diabetes, Type I, Newly Diagnosis Type I Diabetes Mellitus

Brief summary

Our objective is to demonstrate that providing supplemental vitamin D to children with new onset DM will significantly decrease the levels of HbA1c and insulin requirement by the following methods. 1. Identify how often vitamin D levels are low in patients with new onset Type 1 diabetes mellitus (DM). 2. Record the hemoglobin A1c (HbA1c) level (which reflects the average blood sugar level over the past few months) and document insulin requirements before and after vitamin supplementation is given. Hypothesis: Maintaining vitamin D levels \>30 ng/ml will decrease HbA1c and insulin requirements.

Detailed description

New onset type 1 DM patients who present at William Beaumont Hospital, Royal Oak or to the Pediatric Endocrine Clinic will be approached about the study at their presentation and time will be given for the patient and family to discuss and ask questions regarding the study. Patients will then be enrolled following informed consent. Glucose levels and insulin requirements will be monitored continuously from the faxed weekly logbooks from the point of diagnosis for 3 months (as standard practice for all newly diagnosed diabetic patients in our clinic). At the baseline visit a Vitamin D level will be drawn and frozen for 3 months prior to processing. .After 3 months vitamin D, calcium, alkaline phosphatase, phosphorus and other standard of care lab draws will be done. Approximately an additional 3 tsp of blood will be taken. All female subjects of child bearing potential will have a pregnancy test done. EMLA cream to anesthetize the area will be used prior to blood draw. A vitamin D level of \<30 ng/ml is considered insufficient and the patient will then be given vitamin D supplement. The vitamin D level, calcium, alkaline phosphatase and phosphorus will be rechecked at 6 months (additional 3 tsp of blood) . Glucose levels and insulin requirements will be monitored continuously from the faxed weekly logbooks again for another 3 months.

Interventions

DRUGVitamin D

2000iu once a day

Sponsors

Corewell Health East
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE

Intervention model description

Patients with clinically significantly low Vitamin D levels (\<30 ng/mL) were supplemented with Vitamin D and compared to patients with normal vitamin D levels (50-80 nG/mL).

Eligibility

Sex/Gender
ALL
Age
1 Years to 18 Years
Healthy volunteers
No

Inclusion criteria

* Newly diagnosed type I DM. * Age \<18 years

Exclusion criteria

* Pregnancy

Design outcomes

Primary

MeasureTime frameDescription
Change in Hemoglobin A1c6 monthsChange in hemoglobin A1c calculated as a percentage change from baseline measurement

Secondary

MeasureTime frameDescription
Change in Insulin Requirements6 monthsPercentage change from baseline number of units of lantus insulin over 6 months.

Countries

United States

Participant flow

Pre-assignment details

Blood vitamin D level checked to assign to treatment or no-treatment arm

Participants by arm

ArmCount
Those Requiring Vit D Supplement
Those who had a Vit D level of \< 30 Vitamin D: 2000iu once a day
37
No Vit D Supplementation
Normal vitamin D levels No Vitamin D supplement
38
Total75

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyPhysician Decision20
Overall StudyWithdrawal by Subject1811

Baseline characteristics

CharacteristicNo Vit D SupplementationTotalThose Requiring Vit D Supplement
Age, Categorical
<=18 years
27 Participants44 Participants17 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
0 Participants0 Participants0 Participants
Age, Continuous8.9 years
STANDARD_DEVIATION 4.1
9.95 years
STANDARD_DEVIATION 4
10.4 years
STANDARD_DEVIATION 4.2
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants2 Participants1 Participants
Race (NIH/OMB)
Black or African American
2 Participants9 Participants7 Participants
Race (NIH/OMB)
More than one race
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants4 Participants1 Participants
Race (NIH/OMB)
White
31 Participants59 Participants28 Participants
Region of Enrollment
United States
38 participants75 participants37 participants
Sex: Female, Male
Female
15 Participants30 Participants15 Participants
Sex: Female, Male
Male
23 Participants45 Participants22 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 370 / 38
other
Total, other adverse events
0 / 370 / 38
serious
Total, serious adverse events
0 / 370 / 38

Outcome results

Primary

Change in Hemoglobin A1c

Change in hemoglobin A1c calculated as a percentage change from baseline measurement

Time frame: 6 months

Population: 20 patients in the Vitamin D Supplement arm and 11 patients in the No-Vitamin D supplement arm were withdrawn and not analyzed.

ArmMeasureValue (MEAN)Dispersion
Those Requiring Vit D SupplementChange in Hemoglobin A1c2.67 percentage change from baselineStandard Deviation 0.58
No Vitamin D SupplementationChange in Hemoglobin A1c1.05 percentage change from baselineStandard Deviation 0.58
Secondary

Change in Insulin Requirements

Percentage change from baseline number of units of lantus insulin over 6 months.

Time frame: 6 months

Population: 20 patients in the Vitamin D Supplement arm and 11 patients in the No-Vitamin D supplement arm were withdrawn and not analyzed.

ArmMeasureValue (MEAN)Dispersion
Those Requiring Vit D SupplementChange in Insulin Requirements2.62 percentage change of baseline insulinStandard Deviation 4.05
No Vitamin D SupplementationChange in Insulin Requirements1.80 percentage change of baseline insulinStandard Deviation 1.55

Source: ClinicalTrials.gov · Data processed: Mar 9, 2026