7q11.23 duplication syndrome is a chromosome abnormality characterized by a variety of neurological and behavioral differences. It is caused by a small amount of additional (duplicated) genetic material from chromosome 7. Symptoms may include: motor, speech and language delay, behavior problems, intellectual disability, low muscle tone (hypotonia), an increased head circumference (macrocephaly), facial dysmorphism, seizures, brain abnormalities, and heart defects such as enlargement of the blood vessel that carries blood from the heart to the rest of the body (aortic dilatation). 7q11.23 duplication syndrome is caused by a duplication of genetic material on the long (q) arm of chromosome 7. Some cases of 7q11.23 duplication syndrome are inherited in an autosomal dominant manner; however, the majority of affected individuals have a new (de novo) duplication.
Summary
7q11.23 duplication syndrome is a chromosome abnormality characterized by a variety of neurological and behavioral differences. It is caused by a small amount of additional (duplicated) genetic material from chromosome 7. Symptoms may include: motor, speech and language delay, behavior problems, intellectual disability, low muscle tone (hypotonia), an increased head circumference (macrocephaly), facial dysmorphism, seizures, brain abnormalities, and heart defects such as enlargement of the blood vessel that carries blood from the heart to the rest of the body (aortic dilatation). 7q11.23 duplication syndrome is caused by a duplication of genetic material on the long (q) arm of chromosome 7. Some cases of 7q11.23 duplication syndrome are inherited in an autosomal dominant manner; however, the majority of affected individuals have a new (de novo) duplication.7q11.23 duplication syndrome is a chromosome abnormality characterized by a variety of neurological and behavioral differences. It is caused by a small amount of additional (duplicated) genetic material from chromosome 7. Symptoms may include: motor, speech and language delay, behavior problems, intellectual disability, low muscle tone (hypotonia), an increased head circumference (macrocephaly), facial dysmorphism, seizures, brain abnormalities, and heart defects such as enlargement of the blood vessel that carries blood from the heart to the rest of the body (aortic dilatation). 7q11.23 duplication syndrome is caused by a duplication of genetic material on the long (q) arm of chromosome 7. Some cases of 7q11.23 duplication syndrome are inherited in an autosomal dominant manner; however, the majority of affected individuals have a new (de novo) duplication.
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Resource(s) for Medical Professionals and Scientists on This Disease:
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GeneReviewsprovides scientific information on genetic diseases, including diagnosis, treatment, and genetic counseling.
About 7q11.23 microduplication syndrome
Many rare diseases have limited information. Currently GARD aims to provide the following information for this disease:
Population Estimate:This section is currently indevelopment.
Symptoms:May start to appear as a Newborn and as an Infant.
Cause:This disease is caused by changes in the way information is arranged into chromosomes.
Organizations:Patient organizations are available to help find a specialist, or advocacy and support for this specific disease.
Categories:Birth DefectsGenetic Diseases
When Do Symptoms of 7q11.23 microduplication syndrome Begin?
Symptoms of this disease may start to appear as a Newborn and as an Infant.
The age symptoms may begin to appear differs between diseases. Symptoms may begin in a single age range, or during several age ranges. The symptoms from some diseases may begin at any age. Knowing when symptoms began to appear can help medical providers find the correct diagnosis.
Prenatal
Before Birth
Newborn Selected
Birth-4 weeks
Infant Selected
1-23 months
Child
2-11 years
Adolescent
12-18 years
Adult
19-65 years
Older Adult
65+ years
Symptoms may start to appear as a Newborn and as an Infant.
Symptoms
The types of symptoms experienced, and their intensity, may vary among people with this disease. Your experience may be different from others, and you should consult your primary care provider (PCP) for more information.
This list does not include all possible symptoms related to this disease, but they may include:
Nervous System Nervous System
95 Symptoms
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Body Systems
Symptoms related to this disease may affect different systems of the body. Use the 'Filter and Sort' function to learn more about which body system(s) are affected by this disease and their associated symptom(s).
Medical Term
Delayed speech and language development
Frequency
Uncommon
Very frequent
Very frequent
Always
Description
A degree of language development that is significantly below the norm for a child of a specified age.
A degree of language development that is significantly below the norm for a child of a specified age.
Synonym
Deficiency of speech development; Delayed language development; Delayed speech; Delayed speech acquisition; Delayed speech and language development; Delayed speech development; Impaired speech and language development; Impaired speech development; Language delay; Language delayed; Language development deficit; Late-onset speech development; Poor language development; Speech and language delay; Speech and language difficulties; Speech delay
Deficiency of speech development; Delayed language development; Delayed speech; Delayed speech acquisition; Delayed speech and language development; Delayed speech development; Impaired speech and language development; Impaired speech development; Language delay; Language delayed; Language development deficit; Late-onset speech development; Poor language development; Speech and language delay; Speech and language difficulties; Speech delay
95 Symptoms
Causes
Chromosome Disorder
7q11.23 microduplication syndrome is a chromosome disorder, which means it is caused by changes in the way information is arranged into chromosomes.
What Is a Chromosome?
Chromosomes are thread-like structures found inside the nucleus of human cells. Each chromosome is made of DNA, and DNA is passed from parents to their children.
Humans usually have 46 chromosomes. The first 22 pairs of chromosomes, called autosomes, are found in males and females. The 23rd pair comprises the sex chromosomes. Each parent passes on 22 autosomes and one sex chromosome to their offspring.
The cells in our bodies must constantly divide and produce new cells. Chromosomes play a key role in making sure DNA is copied and passed along during cell division. However, on rare occasions, mistakes do occur. These mistakes can lead to chromosome disorders.
Patient organizations can help patients and families connect. They build public awareness of the disease and are a driving force behind research to improve patients' lives. They may offer online and in-person resources to help people live well with their disease. Many collaborate with medical experts and researchers.
Services of patient organizations differ, but may include:
Ways to connect to others and share personal stories
Easy-to-read information
Up-to-date treatment and research information
Patient registries
Lists of specialists or specialty centers
Financial aid and travel resources
Please note: GARD provides organizations for informational purposes only and not as an endorsement of their services. Please contact an organization directly if you have questions about the information or resources it provides.
Clinical studies are part of clinical research and at the heart of all medical advances, including rare diseases. Participating in research helps researchers ultimately uncover better ways to treat, prevent, diagnose, and understand human diseases.
What Are Clinical Studies?
Clinical studies are medical research involving people as participants. There are two main types of clinical studies:
Clinical trials determine if a new test or treatment for a disease is effective and safe by comparing groups receiving different tests/treatments.
Observational studies involve recording changes over time among a specific group of people in their natural settings.
People participate in clinical trials for many reasons. People with a disease may participate to receive the newest possible treatment and additional care from clinical study staff as well as to help others living with the same or similar disease. Healthy volunteers may participate to help others and to contribute to moving science forward.
To find the right clinical study we recommend you consult your doctors, other trusted medical professionals, and patient organizations. Additionally, you can use ClinicalTrials.gov to search for clinical studies by disease, terms, or location.
Join the All of Us Research Program!
The All of Us Research Program is inviting 1 million people from all backgrounds across the U.S. to help build one of the most diverse health databases in history. Researchers will use the data to learn how our biology, lifestyle, and environment affect health. This may one day help them find ways to treat and prevent diseases.
What if There Are No Available Clinical Studies?
ResearchMatch helps connect people interested in research studies with researchers from top medical centers across the United States. Anyone from the U.S. can register with this free program funded by NIH. Researchers from participating institutions use the database to search for and invite patients or healthy volunteers who meet their study criteria to participate.
What Are Clinical Studies?
Clinical studies are medical research involving people as participants. There are two main types of clinical studies:
Clinical trials determine if a new test or treatment for a disease is effective and safe by comparing groups receiving different tests/treatments.
Observational studies involve recording changes over time among a specific group of people in their natural settings.
People participate in clinical trials for many reasons. People with a disease may participate to receive the newest possible treatment and additional care from clinical study staff as well as to help others living with the same or similar disease. Healthy volunteers may participate to help others and to contribute to moving science forward.
To find the right clinical study we recommend you consult your doctors, other trusted medical professionals, and patient organizations. Additionally, you can use ClinicalTrials.gov to search for clinical studies by disease, terms, or location.People participate in clinical trials for many reasons. People with a disease may participate to receive the newest possible treatment and additional care from clinical study staff as well as to help others living with the same or similar disease. Healthy volunteers may participate to help others and to contribute to moving science forward.
To find the right clinical study we recommend you consult your doctors, other trusted medical professionals, and patient organizations. Additionally, you can use ClinicalTrials.gov to search for clinical studies by disease, terms, or location.
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Join the All of Us Research Program!
The All of Us Research Program is inviting 1 million people from all backgrounds across the U.S. to help build one of the most diverse health databases in history. Researchers will use the data to learn how our biology, lifestyle, and environment affect health. This may one day help them find ways to treat and prevent diseases.
What if There Are No Available Clinical Studies?
ResearchMatch helps connect people interested in research studies with researchers from top medical centers across the United States. Anyone from the U.S. can register with this free program funded by NIH. Researchers from participating institutions use the database to search for and invite patients or healthy volunteers who meet their study criteria to participate.
ClinicalTrials.gov, an affiliate of NIH, provides current information on clinical research studies in the United States and abroad. Talk to a trusted doctor before choosing to participate in any clinical study. We recommend checking this site often and searching for studies with related terms/synonyms to improve results.
Please contact GARD if you need help finding additional information or resources on rare diseases, including clinical studies. Note, GARD cannot enroll individuals in clinical studies.
Use the contact form to send your questions to a GARD Information Specialist.
Please allow 2 to 10 business days for us to respond.
ClinicalTrials.gov, an affiliate of NIH, provides current information on clinical research studies in the United States and abroad. Talk to a trusted doctor before choosing to participate in any clinical study. We recommend checking this site often and searching for studies with related terms/synonyms to improve results.
Please contact GARD if you need help finding additional information or resources on rare diseases, including clinical studies. Note, GARD cannot enroll individuals in clinical studies.
Take steps toward getting a diagnosis by working with your doctor, finding the right specialists, and coordinating medical care.
Data collected from Orphanet and Online Mendelian Inheritance in Man (OMIM) are used to interpret and provide information on rare diseases. This includes names, synonyms, genes, symptom frequency, population estimates and more.
Human Phenotype Ontology (HPO) provides standard terminology that was used by Orphanet and OMIM to represent a disease's phenotypic features. HPO provides information on describing these clinical features.
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