Brugada syndrome 3
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Also known as BRGDA3Brugada syndrome caused by mutation in CACNA1CBrugada syndrome type 3CACNA1C Brugada syndrome
Summary
Brugada syndrome 3 (MONDO:0012742) is a disease with 2 cohort genes.
At a glance
- Cohort genes: 2
- ClinVar variants: 134
Clinical features
No curated clinical features (Orphanet) for this disease.
Identifiers
Disease identifiers
| Field | Value |
|---|---|
| Canonical name | Brugada syndrome 3 |
| Mondo ID | MONDO:0012742 |
| MeSH | C567509 |
| OMIM | 611875 |
| DOID | DOID:0110220 |
| UMLS | C2678478 |
| MedGen | 395633 |
| GARD | 0010361 |
| Is cancer (heuristic) | no |
Also known as: BRGDA3 · Brugada syndrome 3 · Brugada syndrome caused by mutation in CACNA1C · Brugada syndrome type 3 · CACNA1C Brugada syndrome
Data availability: 134 ClinVar variants · 3 GenCC gene-disease records.
Disease family
Classification path: disease › human disease › disease by body system or component › cardiovascular disorder › heart disorder › heart conduction disease › Brugada syndrome › Brugada syndrome 3
Related subtypes (8): Brugada syndrome 1, Brugada syndrome 2, Brugada syndrome 4, Brugada syndrome 5, Brugada syndrome 6, Brugada syndrome 7, Brugada syndrome 8, Brugada syndrome 9
Genetics & variants
GWAS landscape
No GWAS associations recorded — common-variant (GWAS) studies don’t cover this disease (typical for Mendelian / rare diseases). See the curated gene cohort and Mendelian overlap below.
Variant details and genetic-evidence tiers
ClinVar germline variants
134 retrieved; paginated sample, class counts are floors:
59 conflicting classifications of pathogenicity, 47 uncertain significance, 9 likely benign, 9 benign/likely benign, 3 benign, 3 likely pathogenic, 2 pathogenic, 2 pathogenic/likely pathogenic
| ClinVar | Variant (HGVS) | Gene | Classification | Review |
|---|---|---|---|---|
| 17632 | NM_000719.7(CACNA1C):c.1216G>A (p.Gly406Arg) | CACNA1C | Pathogenic | criteria provided, multiple submitters, no conflicts |
| 17635 | NM_000719.7(CACNA1C):c.116C>T (p.Ala39Val) | CACNA1C | Pathogenic | no assertion criteria provided |
| 190633 | NM_001167623.2(CACNA1C):c.1216G>A (p.Gly406Arg) | CACNA1C | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 3382740 | NM_000719.7(CACNA1C):c.1832T>C (p.Met611Thr) | CACNA1C | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 3382973 | NM_000719.7(CACNA1C):c.3487G>A (p.Gly1163Ser) | CACNA1C | Likely pathogenic | criteria provided, single submitter |
| 3392514 | NM_000719.7(CACNA1C):c.794T>A (p.Met265Lys) | CACNA1C | Likely pathogenic | criteria provided, single submitter |
| 973262 | NM_000719.7(CACNA1C):c.722T>C (p.Val241Ala) | CACNA1C | Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 1003227 | NM_000719.7(CACNA1C):c.6091G>A (p.Gly2031Ser) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 1015055 | NM_000719.7(CACNA1C):c.82G>A (p.Ala28Thr) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 1053141 | NM_000719.7(CACNA1C):c.1026C>T (p.Gly342=) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 1432134 | NM_000719.7(CACNA1C):c.5852C>G (p.Pro1951Arg) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 1468528 | NM_000719.7(CACNA1C):c.4943C>T (p.Ala1648Val) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 1525632 | NM_000719.7(CACNA1C):c.5987C>T (p.Ala1996Val) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 17634 | NM_000719.7(CACNA1C):c.1468G>A (p.Gly490Arg) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 180285 | NM_000719.7(CACNA1C):c.5444G>C (p.Arg1815Thr) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190614 | NM_001167623.2(CACNA1C):c.3883A>G (p.Ile1295Val) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190626 | NM_000719.7(CACNA1C):c.5885G>A (p.Arg1962Gln) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190628 | NM_000719.7(CACNA1C):c.5975G>T (p.Cys1992Phe) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190631 | NM_000719.7(CACNA1C):c.911T>C (p.Ile304Thr) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190639 | NM_000719.7(CACNA1C):c.1485C>A (p.His495Gln) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190640 | NM_000719.7(CACNA1C):c.1487G>A (p.Arg496Gln) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190679 | NM_000719.7(CACNA1C):c.98A>G (p.Asn33Ser) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190683 | NM_000719.7(CACNA1C):c.236C>T (p.Thr79Met) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190686 | NM_000719.7(CACNA1C):c.5198C>T (p.Ala1733Val) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190688 | NM_000719.7(CACNA1C):c.5338C>T (p.Arg1780Cys) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190694 | NM_000719.7(CACNA1C):c.5026GAG[2] (p.Glu1678del) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190710 | NM_000719.7(CACNA1C):c.2T>C (p.Met1Thr) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 190711 | NM_000719.7(CACNA1C):c.15_16del (p.Thr6fs) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 191427 | NM_000719.7(CACNA1C):c.5731G>C (p.Gly1911Arg) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
| 195932 | NM_000719.7(CACNA1C):c.3234C>T (p.Asp1078=) | CACNA1C | Conflicting classifications of pathogenicity | criteria provided, conflicting classifications |
Genes & proteins
Mendelian disease overlap and somatic drivers
GenCC: 13 · Orphanet: 6 · OMIM-shared: 0 · Dual-evidence (GWAS+Mendelian): 0
GenCC gene–disease validity (cohort genes)
the Disease column is the GenCC-asserted condition — a cohort gene’s strongest validity may be for a related predisposition syndrome.
| Gene | Classification | Inheritance | Disease | Records |
|---|---|---|---|---|
| CACNA1C | Supportive | Autosomal dominant | Brugada syndrome | 13 |
Orphanet rare-disease linkage (cohort genes)
| Gene | Orphanet ID | Rare disease |
|---|---|---|
| CACNA1C | Orphanet:101016 | Romano-Ward syndrome |
| CACNA1C | Orphanet:130 | Brugada syndrome |
| CACNA1C | Orphanet:528084 | Non-specific syndromic intellectual disability |
| CACNA1C | Orphanet:595098 | Timothy syndrome type 1 |
| CACNA1C | Orphanet:595105 | Timothy syndrome type 2 |
| CACNA1C | Orphanet:595109 | Atypical Timothy syndrome |
Cohort genes → proteins
2 cohort genes, 1 distinct canonical proteins.
Evidence partition
| Subset | Genes |
|---|---|
| multi_evidence | 2 |
Cohort genes (full)
| Symbol | HGNC | Ensembl | UniProt | Name | Evidence |
|---|---|---|---|---|---|
| CACNA1C | HGNC:1390 | ENSG00000151067 | Q13936 | Voltage-dependent L-type calcium channel subunit alpha-1C | gencc,clinvar |
| ITFG2-AS1 | HGNC:53128 | ENSG00000258325 | ITFG2 antisense RNA 1 | clinvar |
Cohort function summary
Lead sentence per gene, UniProt-curated.
| Symbol | Protein name | Function (lead sentence) |
|---|---|---|
| CACNA1C | Voltage-dependent L-type calcium channel subunit alpha-1C | Pore-forming, alpha-1C subunit of the voltage-gated calcium channel that gives rise to L-type calcium currents. |
Protein-family classification
Druggable: 1 · Difficult: 0 · Unknown: 1 · Druggable fraction: 0.5
Family distribution
Cohort families vs a genome-wide background (hypergeometric, BH-FDR; fold = observed/expected). Counts kept; sorted by enrichment, so the catch-all Other/Unknown bucket no longer leads.
| Family | Genes | Fold | FDR |
|---|---|---|---|
| Ion channel | 1 | 55.8× | 0.036 |
| Other/Unknown | 1 | 0.9× | 0.805 |
Per-gene assignment
| Symbol | Family | Druggable? | EC | InterPro (top 3) |
|---|---|---|---|---|
| CACNA1C | Ion channel | yes | VDCCAlpha1, VDCC_L_a1su, VDCC_L_a1csu | |
| ITFG2-AS1 | Other/Unknown | no |
Expression context
Cohort genes with no expression data: 0.
1 cohort gene are a single-cell marker in ≥1 SCXA experiment.
Breadth distribution (Bgee present_calls)
| Bucket | Genes |
|---|---|
| narrow (1-5 tissues) | 0 |
| moderate (6-20) | 0 |
| broad (>20) | 2 |
| unknown | 0 |
Top tissues across cohort
| Tissue | Cohort genes |
|---|---|
| apex of heart | 1 |
| muscle layer of sigmoid colon | 1 |
| right coronary artery | 1 |
| left testis | 1 |
| male germ line stem cell (sensu Vertebrata) in testis | 1 |
| primordial germ cell in gonad | 1 |
Per-gene tissue summary (top 30)
| Symbol | Bgee breadth | FANTOM5 breadth | SCXA | Top tissues |
|---|---|---|---|---|
| CACNA1C | 134 | broad | marker | apex of heart, right coronary artery, muscle layer of sigmoid colon |
| ITFG2-AS1 | 131 | tissue_specific | yes | male germ line stem cell (sensu Vertebrata) in testis, primordial germ cell in gonad, left testis |
Protein interactions among cohort
Intra-cohort edges: 0.
Hub genes (top 10 by interactor count)
| Symbol | Interactor count |
|---|---|
| CACNA1C | 3,145 |
| ITFG2-AS1 | 0 |
Structural data
PDB: 1 · AlphaFold-only: 0 · No structure: 1
Cohort genes with PDB structures (top 30)
| Symbol | UniProt | PDB entries |
|---|---|---|
| CACNA1C | Q13936 | 33 |
Function
Pathway analysis
Distinct Reactome pathways touched by cohort: 13. Enrichment computed across 2 evidence-associated genes (1 with Reactome annotation).
Pathways by enrichment
Over-representation of cohort genes vs the genome-wide background (hypergeometric test, Benjamini-Hochberg FDR; fold = observed/expected over 1 annotated cohort genes). Counts and members are kept as ground-truth; sorted by enrichment.
| Pathway | Cohort genes | Fold | FDR | Sample cohort genes |
|---|---|---|---|---|
| Phase 2 - plateau phase | 1 | 761.3× | 0.010 | CACNA1C |
| Adrenaline,noradrenaline inhibits insulin secretion | 1 | 393.8× | 0.010 | CACNA1C |
| Phase 0 - rapid depolarisation | 1 | 346.1× | 0.010 | CACNA1C |
| NCAM signaling for neurite out-growth | 1 | 271.9× | 0.010 | CACNA1C |
| NCAM1 interactions | 1 | 248.3× | 0.010 | CACNA1C |
| Regulation of insulin secretion | 1 | 219.6× | 0.010 | CACNA1C |
| Integration of energy metabolism | 1 | 175.7× | 0.011 | CACNA1C |
| Cardiac conduction | 1 | 108.8× | 0.015 | CACNA1C |
| Muscle contraction | 1 | 77.2× | 0.019 | CACNA1C |
| Axon guidance | 1 | 45.1× | 0.028 | CACNA1C |
| Nervous system development | 1 | 42.9× | 0.028 | CACNA1C |
| Developmental Biology | 1 | 14.5× | 0.075 | CACNA1C |
| Metabolism | 1 | 11.6× | 0.086 | CACNA1C |
GO biological processes by enrichment
Over-representation of cohort genes vs the genome-wide background (hypergeometric test, Benjamini-Hochberg FDR; fold = observed/expected over 1 annotated cohort genes). Counts and members are kept as ground-truth; sorted by enrichment.
| GO term | Cohort genes | Fold | FDR | Sample cohort genes |
|---|---|---|---|---|
| calcium ion transmembrane transport via high voltage-gated calcium channel | 1 | 5617.3× | 0.001 | CACNA1C |
| membrane depolarization during atrial cardiac muscle cell action potential | 1 | 5617.3× | 0.001 | CACNA1C |
| immune system development | 1 | 4213.0× | 0.001 | CACNA1C |
| positive regulation of adenylate cyclase activity | 1 | 3370.4× | 0.001 | CACNA1C |
| membrane depolarization during AV node cell action potential | 1 | 3370.4× | 0.001 | CACNA1C |
| positive regulation of muscle contraction | 1 | 2407.4× | 0.001 | CACNA1C |
| cardiac conduction | 1 | 1685.2× | 0.001 | CACNA1C |
| membrane depolarization during cardiac muscle cell action potential | 1 | 1404.3× | 0.001 | CACNA1C |
| cell communication by electrical coupling involved in cardiac conduction | 1 | 1404.3× | 0.001 | CACNA1C |
| regulation of ventricular cardiac muscle cell action potential | 1 | 1404.3× | 0.001 | CACNA1C |
| calcium ion transport into cytosol | 1 | 1203.7× | 0.002 | CACNA1C |
| cardiac muscle cell action potential involved in contraction | 1 | 702.2× | 0.002 | CACNA1C |
| regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion | 1 | 674.1× | 0.002 | CACNA1C |
| calcium ion import across plasma membrane | 1 | 543.6× | 0.003 | CACNA1C |
| embryonic forelimb morphogenesis | 1 | 495.6× | 0.003 | CACNA1C |
| regulation of heart rate by cardiac conduction | 1 | 374.5× | 0.003 | CACNA1C |
| camera-type eye development | 1 | 358.6× | 0.003 | CACNA1C |
| calcium ion transmembrane transport | 1 | 210.7× | 0.005 | CACNA1C |
| positive regulation of cytosolic calcium ion concentration | 1 | 117.0× | 0.009 | CACNA1C |
| heart development | 1 | 78.8× | 0.013 | CACNA1C |
Therapeutics
Drug target analysis
Approved (phase 4): 1 · Phase ≥3: 1 · Phased (≥1): 1 · Undrugged: 1
Druggability breadth: 1 of 2 evidence-associated genes (50%) have a ChEMBL target (buckets above are over the deeply-mined display cohort).
Genes with an approved drug
The molecule shown is one approved compound that hits the gene — not necessarily a drug of choice or one indicated for this disease.
| Symbol | Example approved molecule |
|---|---|
| CACNA1C | REMIFENTANIL |
Top cohort targets by molecule count
| Symbol | Molecules | Max phase |
|---|---|---|
| CACNA1C | 85 | 4 |
| ITFG2-AS1 | 0 | 0 |
Drugs targeting cohort genes (top 30)
| Molecule | Max phase | Targets in cohort |
|---|---|---|
| REMIFENTANIL | 4 | CACNA1C |
| BEPRIDIL | 4 | CACNA1C |
| CLOTRIMAZOLE | 4 | CACNA1C |
| PROPIVERINE | 4 | CACNA1C |
| DIBUCAINE | 4 | CACNA1C |
| IMIPRAMINE | 4 | CACNA1C |
| DULOXETINE | 4 | CACNA1C |
| QUINIDINE | 4 | CACNA1C |
| ESTRADIOL | 4 | CACNA1C |
| TOLTERODINE | 4 | CACNA1C |
| PIMOZIDE | 4 | CACNA1C |
| NIMODIPINE | 4 | CACNA1C |
| NICARDIPINE | 4 | CACNA1C |
| AMLODIPINE | 4 | CACNA1C |
| VARDENAFIL | 4 | CACNA1C |
| CLEMASTINE | 4 | CACNA1C |
| ISRADIPINE | 4 | CACNA1C |
| TERFENADINE | 4 | CACNA1C |
| NISOLDIPINE | 4 | CACNA1C |
| SOLIFENACIN | 4 | CACNA1C |
| PINAVERIUM | 4 | CACNA1C |
| SILDENAFIL | 4 | CACNA1C |
| NIFEDIPINE | 4 | CACNA1C |
| XANOMELINE | 4 | CACNA1C |
| DILTIAZEM | 4 | CACNA1C |
| PRENYLAMINE | 4 | CACNA1C |
| OLICERIDINE | 4 | CACNA1C |
| PROPRANOLOL | 4 | CACNA1C |
| ALVIMOPAN | 4 | CACNA1C |
| ASTEMIZOLE | 4 | CACNA1C |
Bioactivity and enzyme data
Enzyme cohort genes (≥1 EC): 0.
Cohort genes with ChEMBL bioactivity (full, sorted by assay count)
| Symbol | Assays | Type breakdown |
|---|---|---|
| CACNA1C | 575 | Binding:319, Functional:211, Toxicity:26, ADMET:19 |
Cohort genes with high screening signal
≥100 ChEMBL assays — a studied-ness signal; see Therapeutics for approved-drug status.
| Symbol | ChEMBL assays |
|---|---|
| CACNA1C | 575 |
Pharmacogenomics
Cohort genes with a PharmGKB record: 1; with CPIC/DPWG dosing guidelines: 0.
No cohort gene has a CPIC/DPWG genotype-guided dosing guideline (PharmGKB).
Chemical tractability of cohort targets
30 approved/phased compounds have measured bioactivity against a cohort gene (and aren’t yet in disease-level trials). This is a research / tractability signal, NOT a therapeutic recommendation — a bioactivity row often reflects off-target or screening binding (e.g. promiscuous kinase inhibitors against a cohort kinase), implying no disease mechanism.
| Compound | Max phase | Cohort target (bioactivity) |
|---|---|---|
| REMIFENTANIL | 4 | CACNA1C |
| BEPRIDIL | 4 | CACNA1C |
| CLOTRIMAZOLE | 4 | CACNA1C |
| PROPIVERINE | 4 | CACNA1C |
| DIBUCAINE | 4 | CACNA1C |
| IMIPRAMINE | 4 | CACNA1C |
| DULOXETINE | 4 | CACNA1C |
| QUINIDINE | 4 | CACNA1C |
| ESTRADIOL | 4 | CACNA1C |
| TOLTERODINE | 4 | CACNA1C |
| PIMOZIDE | 4 | CACNA1C |
| NIMODIPINE | 4 | CACNA1C |
| NICARDIPINE | 4 | CACNA1C |
| AMLODIPINE | 4 | CACNA1C |
| VARDENAFIL | 4 | CACNA1C |
| CLEMASTINE | 4 | CACNA1C |
| ISRADIPINE | 4 | CACNA1C |
| TERFENADINE | 4 | CACNA1C |
| NISOLDIPINE | 4 | CACNA1C |
| SOLIFENACIN | 4 | CACNA1C |
| PINAVERIUM | 4 | CACNA1C |
| SILDENAFIL | 4 | CACNA1C |
| NIFEDIPINE | 4 | CACNA1C |
| XANOMELINE | 4 | CACNA1C |
| DILTIAZEM | 4 | CACNA1C |
| PRENYLAMINE | 4 | CACNA1C |
| OLICERIDINE | 4 | CACNA1C |
| PROPRANOLOL | 4 | CACNA1C |
| ALVIMOPAN | 4 | CACNA1C |
| ASTEMIZOLE | 4 | CACNA1C |
Druggability pyramid
Cohort genes binned by druggability tier (high → low):
| Tier | Definition | Genes | Symbols |
|---|---|---|---|
| A | Approved (phase 4 drug) | 1 | CACNA1C |
| B | Phased (≥1) drug, not yet approved | 0 | |
| C | Druggable family + PDB, no drug | 0 | |
| D | Druggable family + AlphaFold only, no drug | 0 | |
| E | Difficult family or no structure, no drug | 1 | ITFG2-AS1 |
Undrugged target profiles
1 cohort genes are undrugged. Ranked by ‘starting-point quality’ (assay depth + drugged-partner adjacency).
| Symbol | ChEMBL assays | Drugged partners (top 3) |
|---|---|---|
| ITFG2-AS1 | 0 | — |
Clinical trials & evidence
Clinical trials
Clinical trials: 0.