Question 1

What is combined immunodeficiency due to DOCK8 deficiency?

Accepted Answer

Combined immunodeficiency due to DOCK8 deficiency is an inherited immune disorder characterized by defects in both T and B cell function. It is caused by pathogenic variants in the DOCK8 gene, which impair the body’s ability to fight infections effectively. Affected individuals typically present in childhood with recurrent infections, atopic dermatitis, and elevated immunoglobulin E levels. This condition is very rare, affecting fewer than 1 in 1 million people, and its clinical manifestation can vary among patients.

Question 2

What are the symptoms of combined immunodeficiency due to DOCK8 deficiency?

Accepted Answer

The clinical picture of combined immunodeficiency due to DOCK8 deficiency includes a consistent history of recurrent bacterial and viral infections, along with atopic dermatitis and decreased circulating immunoglobulin M levels. Additional common features are decreased CD4+ T cell proportions, recurrent respiratory infections, food allergies, eczematoid dermatitis, and recurrent otitis media. Many individuals also experience cutaneous abscesses, increased IgE concentrations, elevated eosinophil counts, and in some cases, manifestations such as molluscum contagiosum and failure to thrive. Not all individuals experience all features, and severity varies considerably.

Question 3

What causes combined immunodeficiency due to DOCK8 deficiency?

Accepted Answer

This condition is caused by biallelic pathogenic variants in the DOCK8 gene, which encodes a protein important for normal immune cell signaling and function. It follows an autosomal recessive inheritance pattern, meaning that an affected individual has inherited one altered copy of the gene from each parent. Combined immunodeficiency due to DOCK8 deficiency is more common when parents share a common ancestor, as the likelihood of both carrying the rare variant increases. Genetic counseling is recommended to help families understand the implications for current and future pregnancies. Associated genes include DOCK8.

Question 4

How is combined immunodeficiency due to DOCK8 deficiency inherited?

Accepted Answer

combined immunodeficiency due to DOCK8 deficiency follows an autosomal recessive inheritance pattern. This means a child must inherit a copy of the altered gene from both parents to develop the condition. Parents who each carry one copy typically do not show symptoms.

Question 5

How rare is combined immunodeficiency due to DOCK8 deficiency?

Accepted Answer

combined immunodeficiency due to DOCK8 deficiency 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 combined immunodeficiency due to DOCK8 deficiency diagnosed?

Accepted Answer

Definitive diagnosis is achieved through molecular genetic testing that identifies pathogenic variants in the DOCK8 gene. Clinical evaluation, including a thorough review of the patient’s history of recurrent infections and immune laboratory studies, supports the diagnosis. Because many of these features overlap with other immunodeficiencies, genetic confirmation is essential to distinguish this condition from similar disorders.

Question 7

Are there treatments for combined immunodeficiency due to DOCK8 deficiency?

Accepted Answer

Currently, management focuses on supportive care and symptom management, as there are no FDA-approved treatments specifically for combined immunodeficiency due to DOCK8 deficiency. Treatment plans are tailored to the individual and typically involve a multidisciplinary team that may include immunologists, dermatologists, and infectious disease specialists. Regular surveillance is an essential part of long-term care, helping to detect and intervene in complications such as recurrent infections and potential malignancies at an early stage. Patients are encouraged to discuss treatment options and management strategies with their healthcare team as well as to seek genetic counseling for guidance.

Question 8

Are there clinical trials for combined immunodeficiency due to DOCK8 deficiency?

Accepted Answer

Yes, there are currently 4 active clinical trials for combined immunodeficiency due to DOCK8 deficiency 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

What complications can arise from combined immunodeficiency due to DOCK8 deficiency?

Accepted Answer

Complications from combined immunodeficiency due to DOCK8 deficiency can include recurrent infections, which may be bacterial or viral. Patients also face an increased risk of certain cancers and may develop skin infections like cutaneous abscesses. Regular monitoring is crucial to catch these complications early and manage them effectively.

Question 10

How does combined immunodeficiency due to DOCK8 deficiency affect daily life?

Accepted Answer

Living with combined immunodeficiency due to DOCK8 deficiency can be challenging. Affected individuals often need to take extra precautions to avoid infections, such as practicing good hygiene and possibly limiting exposure to crowded places. Regular medical check-ups and a tailored treatment plan are essential to manage symptoms and maintain a good quality of life.

Question 11

What is the prognosis for someone with combined immunodeficiency due to DOCK8 deficiency?

Accepted Answer

The prognosis for individuals with combined immunodeficiency due to DOCK8 deficiency varies widely. Many people can manage their symptoms into adulthood with proper care, but they may still face complications like recurrent infections and an increased risk of certain cancers. Ongoing support from healthcare professionals can help improve outcomes.

Question 12

What specialists should be involved in the care of someone with combined immunodeficiency due to DOCK8 deficiency?

Accepted Answer

Care for someone with combined immunodeficiency due to DOCK8 deficiency often involves a multidisciplinary team. This team may include immunologists, dermatologists, and infectious disease specialists to address the various aspects of the condition. Regular consultations with these specialists can help manage symptoms and monitor for complications effectively.

Organ System	Phenotype Count	Example Features
Blood and immune system	7	Autoimmunity, Recurrent bacterial infections, Recurrent sinopulmonary infections
Lungs and breathing	5	Recurrent pneumonia, Pulmonary pneumatocele, Asthma
Brain and nerves	2	Hemiplegia, Cerebral vasculitis
Lab test results	2	Increased circulating IgE concentration, Increased circulating IgG concentration
Growth and development	2	Failure to thrive, Growth delay
Skin	2	Atopic dermatitis, Eczematoid dermatitis
Digestive system	1	Eosinophilic infiltration of the esophagus
Heart and blood vessels	1	Subarachnoid hemorrhage
Bones and joints	1	Bone infection (osteomyelitis)
Ears	1	Recurrent otitis media

Research Type	Count	% of Total
Disease patterns and progression	30	30%
Research summaries	27	27%
Laboratory research	13	13%
Patient case studies	11	11%
Clinical study results	11	11%
Testing and diagnosis research	7	7%
Other research	1	1%

Kisho

combined immunodeficiency due to DOCK8 deficiency

Overview

Clinical Presentation

Explore clinical features

Genetic Landscape

Diagnosis

Prognosis

Research Landscape

Recent Publications

Medical References

External Resources

OMIM

Orphanet

GARD

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

combined immunodeficiency due to DOCK8 deficiency

Overview

Clinical Presentation

Explore clinical features

Genetic Landscape

Diagnosis

Prognosis

Research Landscape

Recent Publications

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 combined immunodeficiency due to DOCK8 deficiency?

What are the symptoms of combined immunodeficiency due to DOCK8 deficiency?

What causes combined immunodeficiency due to DOCK8 deficiency?

How is combined immunodeficiency due to DOCK8 deficiency inherited?

How rare is combined immunodeficiency due to DOCK8 deficiency?

How is combined immunodeficiency due to DOCK8 deficiency diagnosed?

Are there treatments for combined immunodeficiency due to DOCK8 deficiency?

Are there clinical trials for combined immunodeficiency due to DOCK8 deficiency?

What complications can arise from combined immunodeficiency due to DOCK8 deficiency?

How does combined immunodeficiency due to DOCK8 deficiency affect daily life?

What is the prognosis for someone with combined immunodeficiency due to DOCK8 deficiency?

What specialists should be involved in the care of someone with combined immunodeficiency due to DOCK8 deficiency?