Overview
Anomaly of chromosome 8 is a broad term that was previously used to describe a group of rare genetic conditions caused by changes in the structure or number of chromosome 8. This term is now considered obsolete in medical classification systems, meaning it has been replaced by more specific diagnoses as our understanding of genetics has improved. Chromosome 8 is one of the 23 pairs of chromosomes in human cells, and it carries hundreds of genes important for normal growth and development. Changes to chromosome 8 can include having an extra copy of part or all of the chromosome (trisomy 8), missing pieces (deletions), duplicated sections, or rearranged segments. Depending on the exact type and size of the chromosome change, symptoms can vary widely. Common features may include intellectual disability, distinctive facial features, growth problems, heart defects, and skeletal abnormalities. Some people may have mild symptoms while others can be more severely affected. Because this is an obsolete umbrella term, patients who were previously given this diagnosis are now typically reclassified under more specific conditions such as trisomy 8 mosaicism, 8p deletion syndrome, or 8q duplication syndrome. Treatment is based on the specific symptoms each person has and usually involves a team of specialists working together. There is no single cure, but supportive therapies, surgeries for structural problems, and educational support can significantly improve quality of life.
Key symptoms:
Intellectual disability or learning difficultiesDistinctive facial featuresGrowth delays or short statureHeart defects present at birthSkeletal abnormalitiesLow muscle toneDelayed speech and language developmentDelayed motor milestones like sitting or walkingKidney or urinary tract problemsDeep creases on the palms and solesBehavioral challengesSeizuresVision or hearing problemsFeeding difficulties in infancy
Variable
Can be inherited in different ways depending on the underlying gene
Neonatal
Begins at or shortly after birth (first 4 weeks)
Treatments
No FDA-approved treatments are currently listed for OBSOLETE: Anomaly of chromosome 8.
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Specialists
View all specialists →No specialists are currently listed for OBSOLETE: Anomaly of chromosome 8.
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 OBSOLETE: Anomaly of chromosome 8.
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 type of chromosome 8 change does my child have, and what does it mean?,What symptoms should I watch for as my child grows?,Which specialists should we see, and how often?,What early intervention therapies do you recommend starting now?,Are there any heart, kidney, or other organ problems we need to check for?,Is this something that could happen again in a future pregnancy?,Are there any clinical trials or research studies we should know about?
Common questions about OBSOLETE: Anomaly of chromosome 8
What is OBSOLETE: Anomaly of chromosome 8?
Anomaly of chromosome 8 is a broad term that was previously used to describe a group of rare genetic conditions caused by changes in the structure or number of chromosome 8. This term is now considered obsolete in medical classification systems, meaning it has been replaced by more specific diagnoses as our understanding of genetics has improved. Chromosome 8 is one of the 23 pairs of chromosomes in human cells, and it carries hundreds of genes important for normal growth and development. Changes to chromosome 8 can include having an extra copy of part or all of the chromosome (trisomy 8), mi
At what age does OBSOLETE: Anomaly of chromosome 8 typically begin?
Typical onset of OBSOLETE: Anomaly of chromosome 8 is neonatal. Age of onset can vary across affected individuals.