Overview
Kozlowski-Brown-Hardwick syndrome is an extremely rare genetic condition that was first described in the medical literature in a small number of patients. This syndrome primarily affects the skeletal system and growth, leading to short stature and bone abnormalities. It is also sometimes referred to by its Orphanet designation ORPHA:2352. Because so few cases have been reported, our understanding of this condition is limited. The syndrome is characterized by a combination of skeletal abnormalities, including problems with bone development (skeletal dysplasia), short stature, and distinctive facial features. Some affected individuals may also have intellectual disability or developmental delays. The bones of the spine, limbs, and other parts of the skeleton may show unusual shapes or sizes on X-rays. Because this condition is so rare, there is no specific cure or targeted treatment available. Management focuses on addressing individual symptoms as they arise. This may include orthopedic care for bone and joint problems, physical therapy to support mobility, and developmental support services for children who experience learning difficulties. Regular follow-up with a team of specialists is important to monitor growth and development over time.
Key symptoms:
Short statureBone and skeletal abnormalitiesUnusual facial featuresDelayed growthJoint problems or stiffnessPossible intellectual disabilityAbnormal shape of the spineShort limbs relative to the body
Autosomal dominant
Passed on from just one parent; each child has about a 50% chance of inheriting it
Childhood
Begins in childhood, roughly ages 1 to 12
Treatments
No FDA-approved treatments are currently listed for Kozlowski-Brown-Hardwick syndrome.
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Specialists
View all specialists →No specialists are currently listed for Kozlowski-Brown-Hardwick syndrome.
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 Kozlowski-Brown-Hardwick syndrome.
Community
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Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
Rare disease caregiving can be isolating. Connect with counseling and peer support.
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 skeletal abnormalities does my child have, and how might they change over time?,Should we pursue genetic testing to look for a specific cause?,What kind of physical therapy or orthopedic care would be most helpful?,Are there any activities or movements my child should avoid to protect their bones and joints?,How often should we schedule follow-up X-rays and growth assessments?,Should my child be evaluated for developmental delays or learning difficulties?,Are there any other specialists we should see as part of a care team?
Common questions about Kozlowski-Brown-Hardwick syndrome
What is Kozlowski-Brown-Hardwick syndrome?
Kozlowski-Brown-Hardwick syndrome is an extremely rare genetic condition that was first described in the medical literature in a small number of patients. This syndrome primarily affects the skeletal system and growth, leading to short stature and bone abnormalities. It is also sometimes referred to by its Orphanet designation ORPHA:2352. Because so few cases have been reported, our understanding of this condition is limited. The syndrome is characterized by a combination of skeletal abnormalities, including problems with bone development (skeletal dysplasia), short stature, and distinctive f
How is Kozlowski-Brown-Hardwick syndrome inherited?
Kozlowski-Brown-Hardwick syndrome follows a autosomal dominant inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does Kozlowski-Brown-Hardwick syndrome typically begin?
Typical onset of Kozlowski-Brown-Hardwick syndrome is childhood. Age of onset can vary across affected individuals.