Overview
Osteosclerotic bone dysplasia (also sometimes referred to as osteosclerotic skeletal dysplasia) is a very rare genetic condition that affects how bones develop and remodel. In this disorder, the bones become abnormally dense and hard — a process called osteosclerosis. Normally, bone is constantly being broken down and rebuilt in a balanced cycle. In osteosclerotic bone dysplasia, this balance is disrupted, leading to excessive bone density. While denser bones might sound like a good thing, the overly hardened bone is often brittle and structurally abnormal, which can lead to a range of problems. Key features of this condition can include skeletal abnormalities visible on X-rays, bone pain, increased risk of fractures despite the dense appearance of bones, and in some cases narrowing of the spaces within bones where nerves and blood vessels pass. This narrowing can lead to nerve compression, causing symptoms like hearing loss, vision problems, or facial nerve weakness. Some individuals may also experience problems with bone marrow function because the marrow space inside bones becomes crowded out by the excess bone tissue, potentially leading to low blood counts (anemia or other cytopenias). There is currently no cure for osteosclerotic bone dysplasia. Treatment is mainly supportive and focused on managing symptoms. This may include pain management, surgical intervention for fractures or nerve compression, and monitoring of blood counts. Because this condition is extremely rare, management is best guided by a team of specialists familiar with skeletal dysplasias.
Also known as:
Key symptoms:
Abnormally dense bones seen on X-raysBone painIncreased risk of bone fracturesHearing loss due to nerve compressionVision problems from narrowed nerve channelsFacial nerve weakness or paralysisLow blood counts (anemia)Short stature or growth problemsSkeletal deformitiesFrequent infections if immune cells are affectedDental problemsHeadachesEnlarged liver or spleen
Clinical phenotype terms (20)— hover any for plain English
Variable
Can be inherited in different ways depending on the underlying gene
Variable
Can begin at different ages, from infancy through adulthood
FDA & Trial Timeline
2 eventsXuanwu Hospital, Beijing — NA
Xuanwu Hospital, Beijing — NA
Data sourced from FDA regulatory filings and ClinicalTrials.gov. Updated periodically.
Treatments
No FDA-approved treatments are currently listed for Osteosclerotic bone dysplasia.
View clinical trials →Clinical Trials
View all trials with filters →No actively recruiting trials found for Osteosclerotic bone dysplasia at this time.
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Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Travel Grants
No travel grants are currently matched to Osteosclerotic bone dysplasia.
Community
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Start the conversation →Latest news about Osteosclerotic bone dysplasia
Disease timeline:
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A new clinical trial is recruiting patients for Osteosclerotic bone dysplasia
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A new clinical trial is recruiting patients for Osteosclerotic bone dysplasia
Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
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Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.What specific type of osteosclerotic bone dysplasia does my child or I have, and is genetic testing available to confirm it?,How often should we have X-rays, blood tests, and hearing or vision screenings?,What are the warning signs of complications I should watch for at home?,Are there any activity restrictions to reduce the risk of fractures?,Is bone marrow transplant or any other advanced treatment an option in our case?,Are there any clinical trials or research studies we could participate in?,Can you refer us to a center with experience in skeletal dysplasias?
Common questions about Osteosclerotic bone dysplasia
What is Osteosclerotic bone dysplasia?
Osteosclerotic bone dysplasia (also sometimes referred to as osteosclerotic skeletal dysplasia) is a very rare genetic condition that affects how bones develop and remodel. In this disorder, the bones become abnormally dense and hard — a process called osteosclerosis. Normally, bone is constantly being broken down and rebuilt in a balanced cycle. In osteosclerotic bone dysplasia, this balance is disrupted, leading to excessive bone density. While denser bones might sound like a good thing, the overly hardened bone is often brittle and structurally abnormal, which can lead to a range of problem
Which specialists treat Osteosclerotic bone dysplasia?
4 specialists and care centers treating Osteosclerotic bone dysplasia are listed on UniteRare, sourced from ClinicalTrials.gov principal investigators, published research, and the NPPES NPI registry.