New registry aims to unlock secrets of rare bone disease HPP
NCT ID NCT02306720
First seen Jun 27, 2026 · Last updated Sep 04, 2026 · Updated 1 time
Summary
This long-term study follows over 1,500 people of all ages with hypophosphatasia (HPP), a rare bone disease. Researchers will collect information on how the disease progresses, its impact on daily life, and the long-term safety and effectiveness of the treatment asfotase alfa. The goal is to better understand HPP and improve care for patients.
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
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About 1,571 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2015
- Expected to finish
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Dec 2031
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Patients with Hypophosphatasia (HPP)
- Ages
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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Male and female participants, of any age, with a confirmed diagnosis of HPP. * Participant must have documented alkaline phosphatase (ALP) activity below the lower limit of normal for age and sex, or a documented ALPL gene mutation. * Participant or legal representative is able to read and/or understand the informed consent and study questionnaires in the local language. * Signed informed consent and medical records release by the patient or legal representative. Patient or patient's parent/legal representative must be willing and able to give written informed consent, and the patient must be willing to give written informed assent, if appropriate and required by local regulations. Exclusion Criteria: * Currently participating in an Alexion-sponsored clinical trial. Enrollment in the Registry will not exclude a patient from enrolling in a future clinical trial.
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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.
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The places running it
64 sites in 11 countries. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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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
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Study site
Santander, 681003, Colombia
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Study site
Sesto Fiorentino, Firenze, Italy
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Leicester Royal Infirmary
Leicester, Leicestershire, LE1 5WW, United Kingdom
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Research Site
Centennial, Colorado, 80112, United States
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Research Site
Hartford, Connecticut, 06106, United States
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Research Site
Tampa, Florida, 33606, United States
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Research Site
Decatur, Georgia, 30033, United States
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Research Site
Baltimore, Maryland, 21287, United States
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Research Site
Boston, Massachusetts, 02111, United States
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Research Site
Boston, Massachusetts, 02115, United States
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Research Site
Minneapolis, Minnesota, 55454, United States
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Research Site
Kansas City, Missouri, 64108, United States
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Research Site
St Louis, Missouri, 63110, United States
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Research Site
Hackensack, New Jersey, 07601, United States
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Research Site
Mineola, New York, 11501, United States
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Research Site
Durham, North Carolina, 27710, United States
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Research Site
Cincinnati, Ohio, 45229, United States
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Research Site
Columbus, Ohio, 43205, United States
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Research Site
Pittsburgh, Pennsylvania, 15224, United States
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Research Site
Nashville, Tennessee, 37212, United States
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Research Site
Salt Lake City, Utah, 84112, United States
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Research Site
Charlottesville, Virginia, 22903, United States
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Research Site
Madison, Wisconsin, 53792, United States
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Research Site
Clayton, Victoria, Australia
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Research Site
Parkville, Victoria, Australia
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Research Site
Herston, Australia
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Research Site
South Brisbane, Australia
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Research Site
Linz, Austria
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Research Site
Winnipeg, Manitoba, Canada
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Research Site
Oakville, Ontario, Canada
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Research Site
Ottawa, Ontario, Canada
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Research Site
Toronto, Ontario, M5G 2C4, Canada
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Research Site
Toulouse, Haute Garonne, France
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Research Site
Lille, Nord, France
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Research Site
Paris, Paris, France
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Research Site
Poitiers, Vienne, France
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Research Site
Lyon, France
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Research Site
Paris, France
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Research Site
Le Kremlin-Bicêtre, Île-de-France Region, France
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Research Site
Bad Reichenhall, Bavaria, Germany
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Research Site
Würzburg, Bavaria, Germany
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Research Site
Bochum, North Rhine-Westphalia, Germany
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Research Site
Düsseldorf, North Rhine-Westphalia, Germany
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Research Site
Dresden, Saxony, Germany
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Research Site
Berlin, Germany
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Research Site
Cologne, Germany
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Research Site
Giessen, Germany
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Research Site
Homburg, Germany
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Research Site
Mainz, Germany
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Research Site
Milan, Milano, 20132, Italy
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Research Site
Florence, Italy
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Research Site
Pisa, Italy
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Research Site
Rome, Italy
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Research Site
San Giovanni Rotondo, Italy
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Research Site
Lodz, Poland
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Research Site
Warsaw, Poland
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Research Site
Riyadh, Saudi Arabia
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Research Site
Madrid, Spain
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Research Site
Bristol, Avon, United Kingdom
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Research Site
London, Greater London, United Kingdom
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Research Site
Stanmore, Middlesex, United Kingdom
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Research Site
Oxford, Oxfordshire, United Kingdom
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Research Site
Sheffield, South Yorkshire, United Kingdom
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Research Site
Newcastle upon Tyne, Tyne & Wear, United Kingdom
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Research Site
Birmingham, West Midlands, United Kingdom
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Research Site
Belfast, United Kingdom
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Other studies related to the condition(s) this trial covers.