Is CACNA2D1 p.Asp320= (c.960C>T) pathogenic?

CACNA2D1 p.Asp320= (c.960C>T) is classified Benign/Likely benign in CACNA2D1 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2026-01-19). Rare (popmax 0.206%, sas); Associated with Brugada syndrome.

What condition is associated with CACNA2D1 p.Asp320= (c.960C>T)?

CACNA2D1 p.Asp320= (c.960C>T) is associated with Brugada syndrome (ClinVar).

How common is CACNA2D1 p.Asp320= (c.960C>T) in the general population?

CACNA2D1 p.Asp320= (c.960C>T) is rare (popmax 0.206%, sas) (gnomAD).

How is Brugada syndrome inherited?

Typically Autosomal dominant, Not applicable (Orphanet). A genetic counselor can assess individual risk for a family.

CACNA2D1 p.Asp320=

c.960C>T · rs199512133 · VCV264371

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

rare (popmax 0.206%, sas)

Conditions

Brugada syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.53	GERP -4.6
Overall
CADD	8.331	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.206% South Asian · 188/91,064 alleles

Filtering AF 0.182% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.173%

Overall 0.026% 420/1,613,074 alleles · rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.206%	484
Remaining individualsnot grpmax-eligible	0.0496%	2,015
Middle Eastern	0.0496%	2,017
European (non-Finnish)	0.0158%	6,340
Admixed American	0.0117%	8,573
East Asian	0.00446%	22,413
African / African-American	0.004%	24,998

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: CACNA2D1
Protein: p.Asp320=
Coding: c.960C>T
MANE Select: NM_000722
dbSNP: rs199512133
Type: single nucleotide variant
Location: chr7:82038155 (GRCh38)
Gene constraint: LOEUF 0.437 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 86.97 · 30 PDB
Residue 320: a disulfide bond; the vwfa domain; an α-helix

Full CACNA2D1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Brugada syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Brugada syndrome (Orphanet):

Inheritance: Autosomal dominant, Not applicable
Onset: Adult, Childhood
Prevalence: 1-5 / 10 000 (Europe)

Similar variants

CACNA2D1 c.1662+3G>A Uncertain significance ★★ same condition
CACNA2D1 c.2574+3A>G Uncertain significance ★★ same condition
CACNA2D1 c.3160-1G>A Uncertain significance ★★ same condition
CACNA2D1 p.Ala1022Glu Uncertain significance ★★ ⚠ same condition
CACNA2D1 p.Ala104Thr Uncertain significance ★★ ⚠ same condition
CACNA2D1 p.Ala104Val Uncertain significance ★★ ⚠ same condition
CACNA2D1 p.Ala30Pro Uncertain significance ★★ ⚠ same condition
CACNA2D1 p.Ala321Thr Uncertain significance ★★ ⚠ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/cacna2d1-p-asp320 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown