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Study identifier: NCT07369063 Synced from ClinicalTrials.gov · July 28, 2026
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Impact of Vitamin D Therapy on Thyroid Function and Antibody Levels in Pediatric Graves' Disease

Condition: Graves Disease · Graves' Disease · Hyperthyroidism  ·  Sponsor: Northwell Health

PhasePhase 2
Planned participants30
Who can joinAll sexes, 9 Years to 17 Years
Healthy volunteersNo

About this study

The goal of this randomized pilot feasibility clinical trial is to determine the feasibility of implementing a protocol for a larger trial to assess the effects of high-dose vitamin D supplementation in pediatric patients (9-17 years old) newly diagnosed with Graves' disease. The main questions it aims to answer are: What are the recruitment and adherence rates for a larger trial using this protocol? Is the data collection process complete and robust enough for a larger trial? What are the potential barriers to implementing a larger-scale trial? Researchers will compare vitamin D supplementation plus standard methimazole therapy to methimazole therapy alone (with participants permitted to take up to 1000 International Units of vitamin D2 daily) to explore potential effects on thyroid hormone and antibody levels. Participants will: Be randomized to either the intervention or control group. Take study medications (vitamin D or placebo) as directed. Attend regular study visits for blood tests and clinical assessments. Complete medication logs.

This description comes directly from the study's public registry record.

Talk to the study team

Sharon Hyman, MD  ·  15164723750  ·  Shyman1@northwell.edu

Sofya Ilmer, MD  ·  5164723750  ·  silmer@northwell.edu

Always discuss trial participation with your own doctor first.

Locations (1)

Pediatric Endocrinology at Northwell HealthNew Hyde Park, New York, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT07369063