How is Brugada syndrome 8 diagnosed?

Information about diagnosis is currently limited for this condition.

Are there treatments for Brugada syndrome 8?

Information about treatment is currently limited for this condition.

What complications can arise from Brugada syndrome 8?

Brugada syndrome 8 can lead to serious heart rhythm problems. These issues can cause fainting, seizures, or even sudden cardiac arrest. It's important to monitor heart health closely to manage these risks.

How does Brugada syndrome 8 affect daily life?

Living with Brugada syndrome 8 may require some lifestyle adjustments. Patients might need to avoid certain activities that could trigger heart rhythm issues, like intense exercise. Regular check-ups with a doctor can help manage daily life with this condition.

What is the life expectancy for someone with Brugada syndrome 8?

Information about life expectancy for Brugada syndrome 8 is currently limited. However, with proper management and monitoring, many people can live fulfilling lives. It's important to work with healthcare providers to understand individual risks.

Should family members be tested for Brugada syndrome 8?

Yes, family members may want to consider genetic testing for Brugada syndrome 8, especially if there is a known mutation in the HCN4 gene. This can help identify anyone at risk and allow for early monitoring and management of the condition.

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Brugada syndrome 8 - Clinical Profile, Genes & Research | Kisho | Kisho

Rare Disease

Brugada syndrome 8

MONDO:0013148

Also known as:BRGDA8Brugada syndrome caused by mutation in HCN4Brugada syndrome type 8

Overview

Any Brugada syndrome in which the cause of the disease is a mutation in the HCN4 gene.

GeneticsHCN4 (chr 15)

Clinical Presentation

Built from Human Phenotype Ontology (HPO) phenotype annotations and GeneReviews clinical descriptions. Features represent findings documented across known cases — not an exhaustive list of possible symptoms.

Features include always present findings: ST segment elevation, Complete right bundle branch block, and Ventricular tachycardia.

Organ System	Phenotype Count	Example Features
Heart and blood vessels	2	Complete right bundle branch block, Ventricular tachycardia

Genetic Landscape

Assembled from HGNC gene records, ClinGen gene-disease validity evidence, and ClinVar pathogenic variant data. Validity classifications reflect the strength of published evidence linking each gene to this disease.

HCN4 encodes hyperpolarization activated cyclic nucleotide gated potassium channel 4 (1,203 aa). Hyperpolarization-activated ion channel that are permeable to Na(+) and K(+) ions with very slow activation and inactivation. Exhibits higher selectivity for K(+) over Na(+) ions. Highest expression in Testis (19.6 TPM) and Heart Atrial Appendage (8.0 TPM).

Brugada syndrome 8 is associated with mutations in the HCN4 gene on chromosome 15.

The HCN4 protein participates in HCN channel Homomer of subunit HCN4 and HCNs:cAMP bind SNIs pathways.

HCN4 is classified as a druggable target (Druggable Genome, Ion Channel, and Transporter categories) with score 17.4.

Diagnosis

Drawn from GeneReviews diagnostic guidelines, newborn screening panel status (RUSP), and ClinGen gene-disease validity classifications. Reflects current clinical evidence and consensus where available.

GeneReviews

Diagnostic Criteria

Brugada syndrome is a channelopathy, caused by genetic changes in transmembrane ion channels that create action potentials, in this case leading to an increased risk of cardiac arrhythmia .

Suggestive Findings

Brugada syndrome should be suspected in individuals with any of the following findings:

Recurrent syncope
Ventricular fibrillation

Treatment

Compiled from FDA-approved drug records, orphan drug designations, and FDA Adverse Event Reporting System (FAERS) safety data. GeneReviews management guidance is included where available.

No approved treatments are currently available for Brugada syndrome 8. The disease remains an area of unmet medical need.

GeneReviews

Management Guidelines

Evaluations Following Initial Diagnosis

To establish the extent of disease and needs in an individual diagnosed with Brugada syndrome, the following evaluations (if not performed as part of the evaluation that led to the diagnosis) are recommended:

Electrocardiogram (EKG)

Prognosis

Based on GeneReviews surveillance recommendations, HPO phenotype frequency and severity annotations, and published prevalence estimates from Orphanet and OMIM.

GeneReviews

Surveillance Guidelines

At-risk individuals with a family history of Brugada syndrome or a known pathogenic variant should undergo EKG monitoring every one to two years beginning at birth . The presence of type 1 EKG changes should be further investigated.

Source: GeneReviews — "Brugada Syndrome"

Phenotype severity distribution: 3 always present features.

Research Landscape

Sourced from ClinicalTrials.gov and PubMed. Publication types are classified using NLM-curated article metadata; research type breakdowns reflect the nature of published work for this disease.

No clinical trials have been registered for Brugada syndrome 8.

88 publications have been identified in PubMed for Brugada syndrome 8. Research spans Epidemiology / Natural History (26%), Case Report / Case Series (24%), and Review / Meta-Analysis (19%).

Research Type	Count	% of Total
Disease patterns and progression	23	26%

Data assembled from 6 of 12 sources · Last updated Sep 18, 2026, 4:03 AM UTC

MONDOHPOClinicalTrials.govFDAPubMedHGNCClinVarClinGenGeneReviewsOrphanetOMIMRUSP

Medical References

External Resources

OMIM

Online Mendelian Inheritance in Man

OMIM:613123

GARD

Genetic and Rare Diseases Info Center

GARD:15622

Questions for Your Care Team

→Should I pursue genetic testing for HCN4, and what would the results mean for my family?
→Are there specialists or centers of excellence for this condition in my area?
→Is there a patient registry I should consider joining?

FAQ

Frequently Asked Questions

Common questions about Brugada syndrome 8

Brugada syndrome 8 is a form of Brugada syndrome where the cause of the condition is known to be a mutation in the HCN4 gene. Brugada syndrome refers to a range of heart rhythm disorders, and in this type, the genetic mutation in HCN4 leads to changes in the heart's electrical activity. This condition is identified as a rare disease, and being aware of the genetic cause helps in understanding the overall nature of the disorder. The focus on the HCN4 gene is important for distinguishing Brugada syndrome 8 from other types of Brugada syndrome.

Information about symptoms is currently limited for this condition.

Brugada syndrome 8 is caused by a mutation in the HCN4 gene. This mutation is the underlying reason for the changes in heart rhythm seen in this condition, differentiating it from other types of Brugada syndrome. Associated genes include HCN4.

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Kisho

Brugada syndrome 8

Overview

Clinical Presentation

Genetic Landscape

Diagnosis

Diagnostic Criteria

Suggestive Findings

Treatment

Management Guidelines

Evaluations Following Initial Diagnosis

Prognosis

Surveillance Guidelines

Research Landscape

Medical References

External Resources

OMIM

GARD

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

Clinical Guidance

Explore clinical features

Clinical Guidance

Penetrance

Differential Diagnosis

Treatment of Manifestations

Clinical Guidance

Therapies Under Investigation

Clinical Trials

Recent Publications

Brugada syndrome 8

Overview

Clinical Presentation

Genetic Landscape

Diagnosis

Diagnostic Criteria

Suggestive Findings

Treatment

Management Guidelines

Evaluations Following Initial Diagnosis

Prognosis

Surveillance Guidelines

Research Landscape

Medical References

External Resources

OMIM

GARD

Related Diseases

Questions for Your Care Team

Questions for Your Care Team

FAQ

Frequently Asked Questions

What is Brugada syndrome 8?

What are the symptoms of Brugada syndrome 8?

What causes Brugada syndrome 8?

How is Brugada syndrome 8 diagnosed?

Are there treatments for Brugada syndrome 8?

What complications can arise from Brugada syndrome 8?

How does Brugada syndrome 8 affect daily life?

What is the life expectancy for someone with Brugada syndrome 8?

Should family members be tested for Brugada syndrome 8?

Clinical Guidance

Explore clinical features

Clinical Guidance

Penetrance

Differential Diagnosis

Treatment of Manifestations

Clinical Guidance

Therapies Under Investigation

Clinical Trials

Recent Publications