Is CAPS p.Arg107His (c.320G>A) pathogenic?

CAPS p.Arg107His (c.320G>A) is classified Uncertain significance in CAPS (ClinVar, Single submitter, 1 submitter; last evaluated 2022-11-17). AlphaMissense: likely benign (0.0998); Ultra-rare (popmax 0.0264%, sas).

How common is CAPS p.Arg107His (c.320G>A) in the general population?

CAPS p.Arg107His (c.320G>A) is ultra-rare (popmax 0.0264%, sas) (gnomAD).

What do computational predictors say about CAPS p.Arg107His (c.320G>A)?

AlphaMissense predicts likely benign (score 0.0998) — an in-silico prediction, not a clinical call.

CAPS p.Arg107His

c.320G>A · rs201590538 · VCV2231570

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0998 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0264%, sas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0998	likely benign
REVEL	0.255	benign-leaning
SaProt	LLR -9.26	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.3	GERP -2.3, phastCons 0.99
Overall
CADD	21.8	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM R193H vs ClinVar R107H) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0264% South Asian · 24/91,046 alleles

Filtering AF 0.0181% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0154%

Overall 0.00385% 62/1,611,330 alleles · ultra-rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0264%	3,794
Middle Eastern	0.0165%	6,046
East Asian	0.00669%	14,953
Remaining individualsnot grpmax-eligible	0.0064%	15,619
African / African-American	0.00533%	18,762
European (non-Finnish)	0.0022%	45,382

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: CAPS
Protein: p.Arg107His
Coding: c.320G>A
MANE Select: NM_003716 · reported on NM_004058
dbSNP: rs201590538
Type: single nucleotide variant
Location: chr19:5914998 (GRCh38)
Structure: AlphaFold pLDDT 79.13 · 1 PDB
Residue 107: the 'disordered' region

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

Similar variants

CAPS p.Arg107Gly Uncertain significance ★ ⚠ same residue
CADPS p.Ser203= Benign ★★ same type
CADPS p.Tyr579= Benign ★★ same type
CAPS p.Arg18His Benign ★★ ⚠ same type
CAPS p.Pro88Thr Benign ★★ ⚠ same type
CADPS c.3477+2T>G Uncertain significance ★ same type
CADPS p.Ala1047Thr Uncertain significance ★ ⚠ same type
CADPS p.Ala1057Val Uncertain significance ★ ⚠ same type

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/caps-p-arg107his (accessed [today's date]).

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