Angelman Syndrome Information Page

Angelman Syndrome Information Page


What research is being done?

The NINDS supports and conducts research on neurogenetic disorders such as Angelman syndrome, to develop techniques to diagnose, treat, prevent, and ultimately cure them.  Scientists are studying cellular, molecular, and genetic mechanisms involved with the syndrome that may lead to gene therapy aproaches.  Other resestch includes efforts to improve the cognitive deficits seen in Agelman syndrome.

Information from the National Library of Medicine’s MedlinePlus
Angelman syndrome

×
What research is being done?

The NINDS supports and conducts research on neurogenetic disorders such as Angelman syndrome, to develop techniques to diagnose, treat, prevent, and ultimately cure them.  Scientists are studying cellular, molecular, and genetic mechanisms involved with the syndrome that may lead to gene therapy aproaches.  Other resestch includes efforts to improve the cognitive deficits seen in Agelman syndrome.

Information from the National Library of Medicine’s MedlinePlus
Angelman syndrome

The NINDS supports and conducts research on neurogenetic disorders such as Angelman syndrome, to develop techniques to diagnose, treat, prevent, and ultimately cure them.  Scientists are studying cellular, molecular, and genetic mechanisms involved with the syndrome that may lead to gene therapy aproaches.  Other resestch includes efforts to improve the cognitive deficits seen in Agelman syndrome.

Information from the National Library of Medicine’s MedlinePlus
Angelman syndrome


Definition
Definition
Treatment
Treatment
Prognosis
Prognosis
Clinical Trials
Clinical Trials
Organizations
Organizations
Publications
Publications
Definition
Definition

Angelman syndrome (AS) is a genetic disorder that causes neurological and psychological problems including seizures, difficult behaviors, movement disorders, and sleep problems.  Gastrointestinal, orthopedic and eye problems also are often present.  Infants with AS appear normal at birth but often have feeding problems in the first months of life and exhibit noticeable developmental delays by 6-12 months.  Seizures often begin between 2-3 years of age and occur in 80-85 percent of those with AS.  Features that help define the syndrome include very happy demeanor with frequent laughter, poor balance, tremor, and minimal to no speech.  The disorder results from the absence of the UBE3A gene inherited from the mother.  The gene provides instructions for a protein that plays a critical role in the normal development and function of the nervous system.

There are four types of Angelman syndrome, involving problems with chromosomes or mutations in the UBE3A gene.  Other children may have a genetic syndrome that looks like AS but is caused by a different gene.  Dr. Harry Angelman first reported the syndrome in 1965, when he described three children in his practice with similar symptoms.

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Definition

Angelman syndrome (AS) is a genetic disorder that causes neurological and psychological problems including seizures, difficult behaviors, movement disorders, and sleep problems.  Gastrointestinal, orthopedic and eye problems also are often present.  Infants with AS appear normal at birth but often have feeding problems in the first months of life and exhibit noticeable developmental delays by 6-12 months.  Seizures often begin between 2-3 years of age and occur in 80-85 percent of those with AS.  Features that help define the syndrome include very happy demeanor with frequent laughter, poor balance, tremor, and minimal to no speech.  The disorder results from the absence of the UBE3A gene inherited from the mother.  The gene provides instructions for a protein that plays a critical role in the normal development and function of the nervous system.

There are four types of Angelman syndrome, involving problems with chromosomes or mutations in the UBE3A gene.  Other children may have a genetic syndrome that looks like AS but is caused by a different gene.  Dr. Harry Angelman first reported the syndrome in 1965, when he described three children in his practice with similar symptoms.

Treatment
Treatment

There is no specific therapy for Angelman syndrome at this time. The best treatment is to minimize seizures, anxiety, and gastrointestinal issues and maximize sleep.  Seizures are treated with medications and dietary therapies, whild sleep issues are treated with medications and sleep trainig.  It is also mportant to test for and treat any problems with vision, hearing, and mobility.  Intensive therapies such as physical, occcupational, and speech therapies are critical to begin early and continue as long as necessary.  Applied behavior analysis and/or behavior therapy also are important for many individuals.

×
Treatment

There is no specific therapy for Angelman syndrome at this time. The best treatment is to minimize seizures, anxiety, and gastrointestinal issues and maximize sleep.  Seizures are treated with medications and dietary therapies, whild sleep issues are treated with medications and sleep trainig.  It is also mportant to test for and treat any problems with vision, hearing, and mobility.  Intensive therapies such as physical, occcupational, and speech therapies are critical to begin early and continue as long as necessary.  Applied behavior analysis and/or behavior therapy also are important for many individuals.

Definition
Definition

Angelman syndrome (AS) is a genetic disorder that causes neurological and psychological problems including seizures, difficult behaviors, movement disorders, and sleep problems.  Gastrointestinal, orthopedic and eye problems also are often present.  Infants with AS appear normal at birth but often have feeding problems in the first months of life and exhibit noticeable developmental delays by 6-12 months.  Seizures often begin between 2-3 years of age and occur in 80-85 percent of those with AS.  Features that help define the syndrome include very happy demeanor with frequent laughter, poor balance, tremor, and minimal to no speech.  The disorder results from the absence of the UBE3A gene inherited from the mother.  The gene provides instructions for a protein that plays a critical role in the normal development and function of the nervous system.

There are four types of Angelman syndrome, involving problems with chromosomes or mutations in the UBE3A gene.  Other children may have a genetic syndrome that looks like AS but is caused by a different gene.  Dr. Harry Angelman first reported the syndrome in 1965, when he described three children in his practice with similar symptoms.

Treatment
Treatment

There is no specific therapy for Angelman syndrome at this time. The best treatment is to minimize seizures, anxiety, and gastrointestinal issues and maximize sleep.  Seizures are treated with medications and dietary therapies, whild sleep issues are treated with medications and sleep trainig.  It is also mportant to test for and treat any problems with vision, hearing, and mobility.  Intensive therapies such as physical, occcupational, and speech therapies are critical to begin early and continue as long as necessary.  Applied behavior analysis and/or behavior therapy also are important for many individuals.

Prognosis
Prognosis

Most individuals with Angelman syndrome will have significant developmental delays, speech limitations, and motor difficulties, but they understand much of what is said and often learn to communicate non-verbally and by using communication devices.  Those with deletions are more severely affected, whereas those with non-deletions typcally make more developmental progress with better communications skills.  Individuals with AS appear to have normal life spans and generally do not show developmental regression as they age.

As individuals move into adolescence and adulthood, seizures improve or resolve for most people, sleep tends to improve but is still an issue for many, and gstrointestinal symptoms do not change much over time.  Anxiety tends to worsen after puberty and can lead to difficult behaviors.  Many teens and adults with AS also have frequent twitching in their hands, called myoclonus, which can spread to their arms and the rest of the body.  Myoclonus is not seizure activity but can interfere with quality of life and may be treated with medication.

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Most individuals with Angelman syndrome will have significant developmental delays, speech limitations, and motor difficulties, but they understand much of what is said and often learn to communicate non-verbally and by using communication devices.  Those with deletions are more severely affected, whereas those with non-deletions typcally make more developmental progress with better communications skills.  Individuals with AS appear to have normal life spans and generally do not show developmental regression as they age.

As individuals move into adolescence and adulthood, seizures improve or resolve for most people, sleep tends to improve but is still an issue for many, and gstrointestinal symptoms do not change much over time.  Anxiety tends to worsen after puberty and can lead to difficult behaviors.  Many teens and adults with AS also have frequent twitching in their hands, called myoclonus, which can spread to their arms and the rest of the body.  Myoclonus is not seizure activity but can interfere with quality of life and may be treated with medication.

Prognosis
Prognosis

Most individuals with Angelman syndrome will have significant developmental delays, speech limitations, and motor difficulties, but they understand much of what is said and often learn to communicate non-verbally and by using communication devices.  Those with deletions are more severely affected, whereas those with non-deletions typcally make more developmental progress with better communications skills.  Individuals with AS appear to have normal life spans and generally do not show developmental regression as they age.

As individuals move into adolescence and adulthood, seizures improve or resolve for most people, sleep tends to improve but is still an issue for many, and gstrointestinal symptoms do not change much over time.  Anxiety tends to worsen after puberty and can lead to difficult behaviors.  Many teens and adults with AS also have frequent twitching in their hands, called myoclonus, which can spread to their arms and the rest of the body.  Myoclonus is not seizure activity but can interfere with quality of life and may be treated with medication.

Definition

Angelman syndrome (AS) is a genetic disorder that causes neurological and psychological problems including seizures, difficult behaviors, movement disorders, and sleep problems.  Gastrointestinal, orthopedic and eye problems also are often present.  Infants with AS appear normal at birth but often have feeding problems in the first months of life and exhibit noticeable developmental delays by 6-12 months.  Seizures often begin between 2-3 years of age and occur in 80-85 percent of those with AS.  Features that help define the syndrome include very happy demeanor with frequent laughter, poor balance, tremor, and minimal to no speech.  The disorder results from the absence of the UBE3A gene inherited from the mother.  The gene provides instructions for a protein that plays a critical role in the normal development and function of the nervous system.

There are four types of Angelman syndrome, involving problems with chromosomes or mutations in the UBE3A gene.  Other children may have a genetic syndrome that looks like AS but is caused by a different gene.  Dr. Harry Angelman first reported the syndrome in 1965, when he described three children in his practice with similar symptoms.

Treatment

There is no specific therapy for Angelman syndrome at this time. The best treatment is to minimize seizures, anxiety, and gastrointestinal issues and maximize sleep.  Seizures are treated with medications and dietary therapies, whild sleep issues are treated with medications and sleep trainig.  It is also mportant to test for and treat any problems with vision, hearing, and mobility.  Intensive therapies such as physical, occcupational, and speech therapies are critical to begin early and continue as long as necessary.  Applied behavior analysis and/or behavior therapy also are important for many individuals.

Prognosis

Most individuals with Angelman syndrome will have significant developmental delays, speech limitations, and motor difficulties, but they understand much of what is said and often learn to communicate non-verbally and by using communication devices.  Those with deletions are more severely affected, whereas those with non-deletions typcally make more developmental progress with better communications skills.  Individuals with AS appear to have normal life spans and generally do not show developmental regression as they age.

As individuals move into adolescence and adulthood, seizures improve or resolve for most people, sleep tends to improve but is still an issue for many, and gstrointestinal symptoms do not change much over time.  Anxiety tends to worsen after puberty and can lead to difficult behaviors.  Many teens and adults with AS also have frequent twitching in their hands, called myoclonus, which can spread to their arms and the rest of the body.  Myoclonus is not seizure activity but can interfere with quality of life and may be treated with medication.

What research is being done?

The NINDS supports and conducts research on neurogenetic disorders such as Angelman syndrome, to develop techniques to diagnose, treat, prevent, and ultimately cure them.  Scientists are studying cellular, molecular, and genetic mechanisms involved with the syndrome that may lead to gene therapy aproaches.  Other resestch includes efforts to improve the cognitive deficits seen in Agelman syndrome.

Information from the National Library of Medicine’s MedlinePlus
Angelman syndrome

Patient Organizations
Angelman Syndrome Foundation
75 Executive Drive
Suite 327
Aurora
IL
Aurora, IL 60504
Tel: 630-978-4245; 800-432-6435
Prader-Willi Syndrome Association
8588 Potter Park Drive
Suite 500
Sarasota
FL
Sarasota, FL 34238
Tel: 941-312-0400; 800-926-4797
The Arc of the United States
1825 K Street, NW
Suite 1200
Washington
DC
Washington, DC 20006
Tel: 202-534-3700; 800-433-5255
Patient Organizations