Question 1

What is combined immunodeficiency syndrome?

Accepted Answer

Combined immunodeficiency syndrome is a condition characterized by an impaired immune system along with involvement of other organ systems. This condition arises from disruptions associated with pathogenic variants in genes such as KNSTRN and PIK3CD, which are believed to play roles in regulating immune function and cellular processes. It typically presents in childhood, although details regarding onset and affected populations are not fully defined. The overall prevalence is not well established, and the spectrum of clinical features can vary significantly among individuals.

Question 2

What are the symptoms of combined immunodeficiency syndrome?

Accepted Answer

While specific characteristic findings and detailed clinical features have not been clearly defined in the available data, individuals with combined immunodeficiency syndrome generally experience a compromised immune response that may lead to recurrent infections and complications in other organ systems. Variability is common, and not all individuals experience all symptoms. The clinical presentation can evolve over time, making it important to recognize that the severity and range of features differ among affected individuals.

Question 3

What causes combined immunodeficiency syndrome?

Accepted Answer

Combined immunodeficiency syndrome is associated with pathogenic variants in the KNSTRN and PIK3CD genes. These genes are involved in critical cellular functions that are essential for an effective immune response. Although detailed information regarding the inheritance pattern is not available, the identification of these genetic variants underscores the importance of molecular genetic testing for families. Consultation with a genetic counselor can provide further insight into the implications for family members. Associated genes include KNSTRN, PIK3CD.

Question 4

How is combined immunodeficiency syndrome diagnosed?

Accepted Answer

Diagnosis of combined immunodeficiency syndrome primarily involves molecular genetic testing to identify pathogenic variants in the KNSTRN and PIK3CD genes. Clinical evaluation, including a careful review of the patient’s history and symptoms, is also essential in guiding the diagnosis. Since laboratory biomarkers and specific diagnostic methods are not detailed in the available information, confirming the diagnosis through genetic testing is critical to distinguish this condition from other immunodeficiencies.

Question 5

Are there treatments for combined immunodeficiency syndrome?

Accepted Answer

Currently, management of combined immunodeficiency syndrome focuses on supportive care and symptom management. Treatment is tailored to the individual and typically involves a multidisciplinary team to address immune function and complications affecting multiple organ systems. Patients should discuss treatment options with their healthcare team to determine the best approach for their specific situation, and genetic counseling is recommended to help families understand potential implications and available strategies.

Question 6

Are there clinical trials for combined immunodeficiency syndrome?

Accepted Answer

Yes, there are currently 62 active clinical trials for combined immunodeficiency 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 7

What complications can arise from combined immunodeficiency syndrome?

Accepted Answer

Individuals with combined immunodeficiency syndrome may face complications from recurrent infections and issues in other organ systems. Since the immune system is not functioning properly, patients are more susceptible to illnesses, which can lead to serious health challenges. The specific complications can vary widely from person to person, making regular medical check-ups important.

Question 8

How does combined immunodeficiency syndrome affect daily life?

Accepted Answer

Living with combined immunodeficiency syndrome can require special care and attention to health. Patients may need to avoid crowded places to reduce the risk of infections and may have to follow specific health guidelines. Support from family and healthcare providers is crucial to help manage daily activities and maintain a good quality of life.

Question 9

What is the prognosis for someone with combined immunodeficiency syndrome?

Accepted Answer

The prognosis for combined immunodeficiency syndrome varies greatly among individuals. Factors like the severity of immune issues and how well other organs are functioning play a big role in outcomes. With the right care and management, many individuals can lead fulfilling lives, but it is essential to have ongoing support from healthcare specialists.

Question 10

Should families consider genetic counseling for combined immunodeficiency syndrome?

Accepted Answer

Yes, families should consider genetic counseling when dealing with combined immunodeficiency syndrome. Since the condition is linked to specific genetic variants, a genetic counselor can help explain the implications for family members and discuss testing options. This guidance can be very helpful for family planning and understanding the risks involved.

Feature	% of Persons w/Feature	Comment
Sinopulmonary infections	96%-100%	Severe /or recurrent
Bronchiectasis	18%-60%	—
Lymphoproliferation	71%-89%	Incl splenomegaly, hepatomegaly, lymphadenopathy
Growth delays	45%-62%	—
Herpes virus infections	36%-49%	Persistent, severe, /or recurrent
Enteropathy	25%-51%	Lymphoid aggregates may be seen on histology.
Lymphoma	12%-28%	Particularly early onset
Autoimmune cytopenias	19%-30%	May be refractory to conventional therapy
Autoimmune autoinflammatory disease	17%-42% Neurodevelopmental delay	19%-31%

Gene(s)	Disorder	MOI	Features of Disorder
AICDA	Hyper IgM syndrome 2 (HIGM2) (OMIM 605258)	AR	Recurrent infections, hypogammaglobulinemia, IgM, lymphoid hyperplasia
TNFRSF13C	Common variable immunodeficiency (CVID) (OMIM PS607594)	ARAD	Recurrent infections, hypogammaglobulinemia, autoimmunity, lymphoproliferation
CD40	Hyper IgM syndrome 3 (HIGM3) (OMIM 606843)	AR	Recurrent infections, hypogammaglobulinemia, IgM, lymphoid hyperplasia
CD40LG	X-linked hyper IgM syndrome (HIGM1)	XL SH2D1A XIAP	—
X-linked lymphoproliferative disease	XL	Immune dysregulation	More severe EBV infections
UNG	Hyper IgM syndrome 5 (HIGM5) (OMIM 608106)	AR	Recurrent infections
CTLA4	CTLA4 haploinsufficiency (OMIM 616100)	AD	Recurrent infections, autoimmunity, lymphoproliferation
LRBA	LRBA deficiency (OMIM 614700)	AR	—
STAT3	Autoimmune disease, multisystem, infantile-onset, 1 (OMIM 615952)	AD1	T helper 17 cells phosphorylated STAT3 AD = autosomal dominant; APDS = activated PI3K delta syndrome; AR = autosomal recessive; CTLA-4 = cytotoxic T-lymphocyte protein 4; EBV = Epstein-Barr virus; MOI = mode of inheritance; STAT3 = signal transducer and activator of transcription 3; XL = X-linked 1.

Kisho

combined immunodeficiency syndrome

Overview

Clinical Presentation

Clinical Guidance

Diagnosis

Diagnostic Criteria

Suggestive Findings

Treatment

Management Guidelines

Evaluations Following Initial Diagnosis

Prognosis

Surveillance Guidelines

Research Landscape

Medical References

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

Differential Diagnosis

General

Infection history

Immunodeficiency

Lymphoproliferation

Pulmonary

Gastrointestinal

Therapies Under Investigation

Clinical Trials

Recent Publications

combined immunodeficiency syndrome

Overview

Clinical Presentation

Clinical Guidance

Diagnosis

Diagnostic Criteria

Suggestive Findings

Treatment

Management Guidelines

Evaluations Following Initial Diagnosis

Prognosis

Surveillance Guidelines

Research Landscape

Medical References

Subtypes

Related Diseases

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

What is combined immunodeficiency syndrome?

What are the symptoms of combined immunodeficiency syndrome?

What causes combined immunodeficiency syndrome?

How is combined immunodeficiency syndrome diagnosed?

Are there treatments for combined immunodeficiency syndrome?

Are there clinical trials for combined immunodeficiency syndrome?

What complications can arise from combined immunodeficiency syndrome?

How does combined immunodeficiency syndrome affect daily life?

What is the prognosis for someone with combined immunodeficiency syndrome?

Should families consider genetic counseling for combined immunodeficiency syndrome?

Differential Diagnosis

General

Infection history

Immunodeficiency

Lymphoproliferation

Pulmonary

Gastrointestinal

Therapies Under Investigation

Clinical Trials

Recent Publications