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Could vitamin d help kids with Graves' disease? new trial launches

NCT ID NCT07369063

Disease control Sponsor: Northwell Health Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This pilot study tests whether adding high-dose vitamin D to standard methimazole therapy helps control thyroid function and antibodies in children aged 9-17 newly diagnosed with Graves' disease. The main goal is to see if a larger trial is possible by measuring recruitment, adherence, and data quality. Thirty participants will be randomly assigned to receive either vitamin D or a placebo alongside their usual medication.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 30 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2025

Expected to finish

Feb 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

9 to 17 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * All new pediatric participants aged 9-17 years with a new diagnosis of GD who will be started on methimazole, will be offered to participate at the time of diagnosis. * Biochemical features include: * Suppressed TSH \<0.1. * Elevated T3 * Elevated Free T4 * Elevated T4 * Positive TSI or TRAb. The presence of antibodies is diagnostic. * Our study will offer enrollment to non-English speaking participants Exclusion Criteria: * Initial hydroxy vitamin D levels \>80 ng/mL * Hypocalcemia, corrected calcium based on albumin \<8.4 mg/dL * Hypercalcemia, corrected calcium based on albumin \>10.5 mg/dL * Conditions that affect vitamin D metabolism such as: malabsorption, chronic kidney or liver disease, nephrocalcinosis, hyperparathyroidism * Current use of medications which are known to affect thyroid function or vitamin D metabolism such as thyroid hormone replacement, corticosteroids, anticonvulsants * Allergy to vitamin D or methimazole * Diagnosis of Hashitoxicosis or thyrotoxicosis (both TSH receptor antibody (TRAb) and thyroid-stimulating immunoglobulin (TSI) levels are negative) * Participants under the age of 9 years at the time of diagnosis * Pregnant participants * Active or uncontrolled infections, other significant medical conditions deemed by the investigator to interfere with study participation or pose undue risk to the participant.

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Conditions

The condition(s) this trial relates to.

Graves disease hyperthyroidism

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Graves disease Hyperthyroidism

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Pediatric Endocrinology at Northwell Health

    RECRUITING

    New Hyde Park, New York, 11042, United States

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