Overview
Congenital disorder of glycosylation-related bone disorder (CDG-related bone disorder) is a rare inherited condition that belongs to a large family of diseases called congenital disorders of glycosylation (CDG). In these conditions, the body has trouble with a chemical process called glycosylation, which is how sugars are attached to proteins and fats in the body. These sugar-coated molecules are essential for many body functions, including building and maintaining healthy bones. When glycosylation does not work properly, it can lead to significant problems with bone development and strength. Patients with this condition may experience skeletal abnormalities such as short stature, abnormal bone shape, frequent fractures, joint problems, and delayed bone growth. Because glycosylation affects many systems in the body, patients may also have symptoms beyond the bones, including developmental delays, low muscle tone, and problems with other organs. Treatment is currently focused on managing symptoms rather than curing the underlying cause. This may include orthopedic care for bone problems, physical therapy to improve mobility and strength, and monitoring for complications in other organ systems. Some specific CDG subtypes may respond to targeted sugar supplementation therapies, but this depends on the exact genetic cause. A team of specialists is usually needed to provide comprehensive care. Research is ongoing to better understand these conditions and develop more effective treatments.
Also known as:
Key symptoms:
Short stature or growth delayAbnormal bone shape or skeletal deformitiesFrequent bone fracturesJoint stiffness or limited joint movementLow muscle tone (floppy muscles)Delayed motor milestones like sitting or walkingCurved spine (scoliosis or kyphosis)Abnormal facial featuresDevelopmental delay or intellectual disabilityFailure to thrive or poor weight gainThin or fragile bones (low bone density)Abnormal gait or difficulty walkingLiver problemsBlood clotting abnormalities
Autosomal recessive
Passed on when both parents carry the same gene change; often skips generations
Variable
Can begin at different ages, from infancy through adulthood
Treatments
No FDA-approved treatments are currently listed for Congenital disorder of glycosylation-related bone disorder.
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Specialists
View all specialists →No specialists are currently listed for Congenital disorder of glycosylation-related bone disorder.
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 Congenital disorder of glycosylation-related bone disorder.
Community
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Caregiver Resources
NORD Caregiver Resources
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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 CDG does my child have, and which gene is affected?,Are there any targeted treatments or supplements that could help this specific subtype?,How often should bone density be monitored, and what can we do to prevent fractures?,What other organ systems should be checked regularly for complications?,Are there any clinical trials or research studies we could participate in?,What physical activities are safe, and which should be avoided?,Should other family members be tested for this condition?
Common questions about Congenital disorder of glycosylation-related bone disorder
What is Congenital disorder of glycosylation-related bone disorder?
Congenital disorder of glycosylation-related bone disorder (CDG-related bone disorder) is a rare inherited condition that belongs to a large family of diseases called congenital disorders of glycosylation (CDG). In these conditions, the body has trouble with a chemical process called glycosylation, which is how sugars are attached to proteins and fats in the body. These sugar-coated molecules are essential for many body functions, including building and maintaining healthy bones. When glycosylation does not work properly, it can lead to significant problems with bone development and strength.
How is Congenital disorder of glycosylation-related bone disorder inherited?
Congenital disorder of glycosylation-related bone disorder follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.