16p13.11 microduplication syndrome

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Other Names:

Dup(16)(p13.11); Trisomy 16p13.11

Categories:

Congenital and Genetic Diseases

Summary Summary

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.

Orpha Number: 261243

Definition

16p13.11 microduplication syndrome is a recently described syndrome associated with variable clinical features including behavioral abnormalities, developmental delay, congenital heart defects and skeletal anomalies.

Epidemiology

It has been clinically and molecularly characterized in fewer than 20 patients.

Clinical description

Behavioral abnormalities include attention deficit/hyperactivity disorder, aggression and disruptive temperament, and autistic spectrum disorders. Skeletal manifestations include hypermobility, craniosynostosis and polydactyly.

Etiology

This syndrome is caused by interstitial duplications encompassing 16p13.11. The size of the rearrangements is variable. The duplications were characterized by comparative genomic hybridization (CGH) microarray and fluorescence in situ hybridization (FISH). The underlying mechanism is non-allelic homologous recombination (NAHR). The microduplications appear de novo or are inherited from mildly affected or completely normal parents, suggesting that the microduplication has incomplete penetrance and variable expressivity. Two genes, NDE1 (nudE nuclear distribution gene E homolog 1) and NTAN1 (N-terminal asparagine amidase) included in the duplicated region may contribute to the neurobehavioral phenotype. As the duplication is present in phenotypically normal parents of patients, as well as in the general population, the clinical significance of the 16p13.11 microduplication is still unclear.

Visit the Orphanet disease page for more resources.

Last updated: 5/1/2011

Symptoms Symptoms

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

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Medical Terms	Other Names	Learn More: HPO ID
30%-79% of people have these symptoms
Attention deficit hyperactivity disorder	Attention deficit Attention deficit disorder Attention deficit-hyperactivity disorder Attention deficits Childhood attention deficit/hyperactivity disorder [ more ]	0007018
Global developmental delay		0001263
Hand polydactyly	Extra finger	0001161
Intellectual disability	Mental deficiency Mental retardation Mental retardation, nonspecific Mental-retardation [ more ]	0001249
Joint hyperflexibility	Joints move beyond expected range of motion	0005692
Language impairment		0002463
5%-29% of people have these symptoms
Aggressive behavior	Aggression Aggressive behaviour Aggressiveness [ more ]	0000718
Arachnodactyly	Long slender fingers Spider fingers [ more ]	0001166
Atrial septal defect	An opening in the wall separating the top two chambers of the heart Hole in heart wall separating two upper heart chambers [ more ]	0001631
Autism		0000717
Coarctation of aorta	Narrowing of aorta Narrowing of the aorta [ more ]	0001680
Craniosynostosis		0001363
Dolichocephaly	Long, narrow head Tall and narrow skull [ more ]	0000268
Pectus excavatum	Funnel chest	0000767
Pes planus	Flat feet Flat foot [ more ]	0001763
Schizophrenia		0100753
Tetralogy of Fallot		0001636
Transposition of the great arteries		0001669
Ventricular septal defect	Hole in heart wall separating two lower heart chambers	0001629

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Last updated: 1/1/2021

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Organizations Organizations

Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.

Organizations Supporting this Disease

Chromosome Disorder Outreach (CDO)
PO Box 724
Boca Raton, FL 33429
Telephone: +1-561-395-4252
E-mail: https://chromodisorder.org/contact/
Website: https://chromodisorder.org/
Unique – Rare Chromosome Disorder Support Group
G1, The Stables
Station Road West
Surrey
RH8 9EE
United Kingdom
Telephone: +44 (0)1883 723356
E-mail: info@rarechromo.org
Website: https://www.rarechromo.org/

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Learn More Learn More

These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

Where to Start

Unique is a source of information and support for families and individuals affected by rare chromosome disorders. Click on the link to view information about 16p13.11 microduplication syndrome.

In-Depth Information

Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.

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