Is CA4 p.Arg246Lys (c.737G>A) pathogenic?

CA4 p.Arg246Lys (c.737G>A) is classified Likely benign in CA4 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-01-31). AlphaMissense: likely benign (0.1109); Absent from gnomAD v4.1.

How common is CA4 p.Arg246Lys (c.737G>A) in the general population?

CA4 p.Arg246Lys (c.737G>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CA4 p.Arg246Lys (c.737G>A)?

AlphaMissense predicts likely benign (score 0.1109) — an in-silico prediction, not a clinical call.

CA4 p.Arg246Lys

c.737G>A · VCV3826449

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1109 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1109	likely benign
REVEL	0.099	moderately benign-leaning
SaProt	LLR -5.69	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP -3.1	GERP -4
Regional constraint	o/e 0.99	unconstrained · MANE · 9,386 bp · p 0.89 · regional, not allelic
Overall
CADD	0.034	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: CA4
Protein: p.Arg246Lys
Coding: c.737G>A
MANE Select: NM_000717
Type: single nucleotide variant
Location: chr17:60158439 (GRCh38)
Gene constraint: LOEUF 0.975 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 89.86 · 10 PDB
Residue 246: the alpha-carbonic anhydrase domain; an α-helix

Full CA4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CA4 c.745-9C>G Uncertain significance ★★ same type
CA4 p.Ala156Val Uncertain significance ★★ ⚠ same type
CA4 p.Ala308Ser Uncertain significance ★★ ⚠ same type
CA4 p.Arg279Pro Uncertain significance ★★ ⚠ same type
CA4 p.Arg50His Uncertain significance ★★ ⚠ same type
CA4 p.Arg50Ser Uncertain significance ★★ ⚠ same type
CA4 p.Asp131Asn Uncertain significance ★★ ⚠ same type
CA4 p.Asp206Glu 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/ca4-p-arg246lys (accessed [today's date]).

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