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NIH launches major study to unlock secrets of rare bone diseases

NCT ID NCT00024804

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 17, 2026 · Updated 14 times

Summary

This study aims to collect information and bone samples from up to 1,000 people with bone or mineral disorders, such as tumor-induced osteomalacia or familial tumoral calcinosis. Participants receive standard medical evaluations and may provide bone tissue from surgery or a biopsy. No experimental treatments are given; the goal is to better understand these conditions and inspire future research.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could improve understanding of bone disorders and guide future research toward better treatments.
What could go wrong
This is an observational study, not a treatment trial. It will not directly benefit participants and may not lead to any new therapies.

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.

Participants

About 1,000 people

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

Started

Nov 2001

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

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

Who is studied

Subjects with known or suspected bone disease and disorder of mineral metabolism.

Ages

1 day to 100 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: The study population will include participants with known or suspected bone disease and/or with a known or suspected disorder of mineral metabolism. To be eligible to participate in this study, an individual must meet all of the following criteria: 1. Age 1 day of life or older 2. Have a known or suspected bone disease, as demonstrated by any one of the following: a fracture, or abnormal bone findings on x-ray, CT scan, MRI, or bone densitometry, and/or a medical or family history consistent with or suggestive of a bone disease. 3. Have a known or suspected disorder of mineral metabolism, as demonstrated by any one of the following: laboratory measurement above or below the reference values for either blood or urine calcium, phosphorus, magnesium, parathyroid hormone or vitamin D, or other measures of mineral metabolism, and/or a medical or family history consistent with or suggestive of a disorder of mineral metabolism. EXCLUSION CRITERIA: 1\. Participants unwilling or unable to abide by the procedures of the protocol.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

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

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States