Question 1

What is DYRK1A-related intellectual disability syndrome?

Accepted Answer

DYRK1A-related intellectual disability syndrome is a very rare condition that primarily affects neurodevelopment, resulting in severe intellectual disability and global developmental delay. It is caused by a mutation in the DYRK1A gene, which plays an essential role in brain development and neuronal function. Affected individuals present with a range of clinical features from early infancy, including distinct facial characteristics and multisystem involvement such as cardiac and renal anomalies. Given its extremely rare occurrence, affecting fewer than 1 in a million people, families are advised to seek specialized evaluation and genetic counseling.

Question 2

What are the symptoms of DYRK1A-related intellectual disability syndrome?

Accepted Answer

The clinical presentation of DYRK1A-related intellectual disability syndrome encompasses a broad spectrum of features that highlight its multisystem impact. Neurologically, nearly all affected individuals exhibit severe global developmental delay, profound intellectual disability, delayed speech and language development, and abnormal muscle tone such as limb hypertonia and generalized hypotonia. Ocular findings include optic atrophy and distinctive downslanted palpebral fissures. Craniofacial features are notable with the presence of a narrow forehead, low-set ears, downturned corners of the mouth, and a thin upper lip vermilion, while other characteristic physical findings include sacral dimple, thickened helices, and a narrow birth length. Additionally, many patients experience recurrent otitis media, feeding difficulties (both in infancy and later), intrauterine growth retardation, and congenital heart and renal anomalies such as patent ductus arteriosus and hydronephrosis. Not all individuals experience every feature, and severity varies widely between affected persons.

Question 3

What causes DYRK1A-related intellectual disability syndrome?

Accepted Answer

DYRK1A-related intellectual disability syndrome results from mutations in the DYRK1A gene, a critical gene involved in brain development and the regulation of neuronal pathways. The condition follows an autosomal dominant inheritance pattern, which means that a single copy of the altered gene can cause the disorder. Although detailed information about de novo rates is not provided, many cases arise due to new mutations rather than being inherited from a parent. Because the inheritance patterns have important implications for family planning, genetic counseling is recommended to help families understand the risks and support decision making. Associated genes include DYRK1A.

Question 4

How is DYRK1A-related intellectual disability syndrome inherited?

Accepted Answer

DYRK1A-related intellectual disability syndrome follows an autosomal dominant inheritance pattern. This means inheriting just one copy of the altered gene from either parent can cause the condition.

Question 5

How rare is DYRK1A-related intellectual disability syndrome?

Accepted Answer

DYRK1A-related intellectual disability syndrome is classified as very rare. The estimated prevalence is approximately <1 in 1,000,000. Because rare disease data can be limited, actual numbers may differ from published estimates.

Question 6

How is DYRK1A-related intellectual disability syndrome diagnosed?

Accepted Answer

Diagnosis is confirmed through molecular genetic testing that identifies pathogenic variants in the DYRK1A gene. A comprehensive clinical evaluation is also performed to assess the constellation of features including severe developmental delays, microcephaly, distinctive facial morphology, and congenital anomalies. Since several of these clinical findings can overlap with other conditions, genetic testing plays a critical role in establishing the definitive diagnosis.

Question 7

Are there treatments for DYRK1A-related intellectual disability syndrome?

Accepted Answer

Currently, management focuses on supportive care and individualized symptom management as no treatments have been specifically approved for DYRK1A-related intellectual disability syndrome. A multidisciplinary care approach is essential; interventions such as physical, occupational, and speech therapy are commonly used to address developmental challenges and help optimize functional skills. In addition, regular surveillance is an important part of long-term care, as it allows for early detection and management of complications affecting the cardiac, renal, and neurological systems. Patients and families are encouraged to discuss treatment options and long-term management strategies with their healthcare team, and genetic counseling is recommended to guide family planning.

Question 8

Are there clinical trials for DYRK1A-related intellectual disability syndrome?

Accepted Answer

Yes, there is currently 1 active clinical trial for DYRK1A-related intellectual disability syndrome registered on ClinicalTrials.gov. Clinical trials test new treatments, procedures, or approaches. Your healthcare provider can help determine if a trial might be appropriate for your situation. Visit the Treatment section of this page for more details.

Question 9

Where can I find support for DYRK1A-related intellectual disability syndrome?

Accepted Answer

Patient advocacy organizations for DYRK1A-related intellectual disability syndrome include DYRK1A Syndrome US. These organizations can provide information, connect you with other families, and help navigate care. Visit the Support section of this page for full details and contact information.

Question 10

What are the common complications associated with DYRK1A-related intellectual disability syndrome?

Accepted Answer

Individuals with DYRK1A-related intellectual disability syndrome may face various complications due to the multisystem involvement of the condition. Common issues include congenital heart anomalies, such as patent ductus arteriosus, and renal problems like hydronephrosis. Additionally, many patients experience recurrent ear infections and feeding difficulties, which can impact their overall health and development.

Question 11

How does DYRK1A-related intellectual disability syndrome affect daily life and development?

Accepted Answer

DYRK1A-related intellectual disability syndrome significantly impacts daily life due to severe global developmental delays and profound intellectual disability. Affected individuals often require ongoing support for communication, mobility, and daily activities. Therapies such as physical, occupational, and speech therapy can help improve functional skills and quality of life, but the level of support needed varies from person to person.

Question 12

What is the long-term prognosis for someone with DYRK1A-related intellectual disability syndrome?

Accepted Answer

The long-term prognosis for individuals with DYRK1A-related intellectual disability syndrome varies widely based on the severity of symptoms and access to specialized care. Many patients face significant lifelong developmental challenges, but with appropriate support and interventions, there is potential for stabilization and improvement in quality of life over time. Families are encouraged to work with healthcare professionals to create an individualized care plan.

Organ System	Phenotype Count	Example Features
Brain and nerves	11	Bilateral tonic-clonic seizure, Seizure, Ataxia
Head and neck	6	Microcephaly, Primary microcephaly, Thin upper lip vermilion
Growth and development	3	Failure to thrive in infancy, Short stature, Intrauterine growth retardation
Muscles	3	Generalized hypotonia, Damage to the optic nerve (optic atrophy), Cerebral cortical atrophy
Arms and legs	3	Tapered finger, Limb hypertonia, Stereotypical hand wringing
Digestive system	2	Feeding difficulties, Feeding difficulties in infancy
Ears	1	Recurrent otitis media
Eyes	1	Damage to the optic nerve (optic atrophy)
Blood and immune system	1	Recurrent infections

Feature	Frequency of Persons w/Feature1	Comment
DD/ID	100%	—
Hypertonia	12/33

System/Concern	Evaluation	Comment
Development	Developmental assessment	To incl motor, adaptive, cognitive, speech/language eval; Eval for early intervention/ special education
Neuromuscular	Orthopedics/ physical medicine rehab/ PT eval	To incl assessment of:; Ambulation; Hypertonia spine curvature; Mobility, ADL, need for adaptive devices Gastrointestinal/
Feeding	Gastroenterology/ nutrition/ feeding team eval	To incl eval of aspiration risk nutritional status gastroesophageal reflux; Consider eval for gastric tube placement in those w/dysphagia /or aspiration risk.; Eval for constipation /or overflow diarrhea
Neurologic	Neurologic eval	Consider brain MRI.; Consider EEG if seizures are a concern. Psychiatric/
Behavioral	Neuropsychiatric eval

System/Concern	Evaluation	Frequency
Development	Monitor developmental progress educational needs.	At each visit Hypertonia
Vision	Follow up by ophthalmologist	When vision is normal, periodic follow up every 3-5 yrs
Gastrointestinal	Monitor for constipation or overflow diarrhea.	At each visit

Research Type	Count	% of Total
Patient case studies	30	60%
Research summaries	8	16%
Disease patterns and progression	6	12%
Laboratory research	4	8%
Testing and diagnosis research	1	2%
New treatment approaches	1	2%

Kisho

DYRK1A-related intellectual disability syndrome

Overview

Clinical Presentation

Clinical Guidance

Explore clinical features

Genetic Landscape

Clinical Guidance

Penetrance

Diagnosis

Diagnostic Criteria

Suggestive Findings

Differential Diagnosis

Treatment

Management Guidelines

Therapies Under Investigation

Clinical Trials

Prognosis

Surveillance Guidelines

Research Landscape

Recent Publications

Patient Support

Patient Advocacy Groups

Medical References

External Resources

OMIM

Orphanet

GARD

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

DYRK1A-related intellectual disability syndrome

Overview

Clinical Presentation

Clinical Guidance

Explore clinical features

Genetic Landscape

Clinical Guidance

Penetrance

Diagnosis

Diagnostic Criteria

Suggestive Findings

Differential Diagnosis

Treatment

Management Guidelines

Therapies Under Investigation

Clinical Trials

Prognosis

Surveillance Guidelines

Research Landscape

Recent Publications

Patient Support

Patient Advocacy Groups

Medical References

External Resources

OMIM

Orphanet

GARD

Related Diseases

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

What is DYRK1A-related intellectual disability syndrome?

What are the symptoms of DYRK1A-related intellectual disability syndrome?

What causes DYRK1A-related intellectual disability syndrome?

How is DYRK1A-related intellectual disability syndrome inherited?

How rare is DYRK1A-related intellectual disability syndrome?

How is DYRK1A-related intellectual disability syndrome diagnosed?

Are there treatments for DYRK1A-related intellectual disability syndrome?

Are there clinical trials for DYRK1A-related intellectual disability syndrome?

Where can I find support for DYRK1A-related intellectual disability syndrome?

What are the common complications associated with DYRK1A-related intellectual disability syndrome?

How does DYRK1A-related intellectual disability syndrome affect daily life and development?

What is the long-term prognosis for someone with DYRK1A-related intellectual disability syndrome?