Overview
7p22.1 microduplication syndrome is a rare genetic condition caused by a small extra copy (duplication) of genetic material on the short arm of chromosome 7, specifically at the region called 22.1. This means that instead of having two copies of the genes in this region, a person has three copies. This extra genetic material can disrupt normal development and lead to a range of symptoms. The syndrome primarily affects brain development and can cause intellectual disability ranging from mild to moderate, speech and language delays, and behavioral challenges such as autism spectrum features or attention difficulties. Many children with this condition also have distinctive facial features that may be subtle, low muscle tone (hypotonia), and delays in reaching motor milestones like sitting and walking. Some individuals may also experience seizures or other neurological problems. Because this is a relatively recently described condition, the full range of symptoms is still being understood. There is no cure for 7p22.1 microduplication syndrome, and treatment focuses on managing individual symptoms. Early intervention services including speech therapy, occupational therapy, and physical therapy can help children reach their full potential. Behavioral support and special education services are also commonly needed. Each person's experience with this syndrome can vary widely, even among family members who carry the same duplication.
Also known as:
Key symptoms:
Intellectual disability (mild to moderate)Speech and language delaysDelayed motor milestones like walkingLow muscle tone (feeling floppy)Behavioral difficultiesAutism spectrum featuresAttention problemsSeizures or epilepsySubtle distinctive facial featuresLearning difficultiesPoor coordinationFeeding difficulties in infancyGrowth delaysAnxiety or mood issues
Clinical phenotype terms (11)— hover any for plain English
Autosomal dominant
Passed on from just one parent; each child has about a 50% chance of inheriting it
Infantile
Begins in infancy, roughly 1 month to 2 years old
Treatments
No FDA-approved treatments are currently listed for 7p22.1 microduplication syndrome.
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Specialists
View all specialists →No specialists are currently listed for 7p22.1 microduplication 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 7p22.1 microduplication 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 genes are included in my child's duplication, and what do they do?,Was this duplication inherited from a parent or did it happen for the first time?,What therapies should we start right away to support my child's development?,Should my child be monitored for seizures or other neurological issues?,What kind of school support or accommodations should we request?,Are there any other medical tests or specialist evaluations we should schedule?,If we plan to have more children, what is the chance they could also have this duplication?
Common questions about 7p22.1 microduplication syndrome
What is 7p22.1 microduplication syndrome?
7p22.1 microduplication syndrome is a rare genetic condition caused by a small extra copy (duplication) of genetic material on the short arm of chromosome 7, specifically at the region called 22.1. This means that instead of having two copies of the genes in this region, a person has three copies. This extra genetic material can disrupt normal development and lead to a range of symptoms. The syndrome primarily affects brain development and can cause intellectual disability ranging from mild to moderate, speech and language delays, and behavioral challenges such as autism spectrum features or
How is 7p22.1 microduplication syndrome inherited?
7p22.1 microduplication syndrome follows a autosomal dominant inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does 7p22.1 microduplication syndrome typically begin?
Typical onset of 7p22.1 microduplication syndrome is infantile. Age of onset can vary across affected individuals.