Is BCAM p.Arg231Pro (c.692G>C) pathogenic?

BCAM p.Arg231Pro (c.692G>C) is classified Uncertain significance in BCAM (ClinVar, Single submitter, 1 submitter; last evaluated 2024-04-19). AlphaMissense: ambiguous (0.4476); Ultra-rare (popmax 0.045%, amr).

How common is BCAM p.Arg231Pro (c.692G>C) in the general population?

BCAM p.Arg231Pro (c.692G>C) is ultra-rare (popmax 0.045%, amr) (gnomAD).

What do computational predictors say about BCAM p.Arg231Pro (c.692G>C)?

AlphaMissense predicts ambiguous (score 0.4476) — an in-silico prediction, not a clinical call.

BCAM p.Arg231Pro

c.692G>C · rs200124143 · VCV3133204

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4476 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.045%, amr)

Missense predictors

1/2 damaging

REVEL, SaProt · AlphaMissense no call

Computational evidence

Protein change
AlphaMissense	0.4476	ambiguous
REVEL	0.276	benign-leaning
SaProt	LLR -18.39	damaging
⇒ SaProt calls this damaging; REVEL does not; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.1	GERP 1.6, phastCons 0.94
Regional constraint	o/e 1.02	unconstrained · MANE · 12 kb · p 0.64 · regional, not allelic
Overall
CADD	22.7	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

Grpmax group 0.045% Admixed American · 27/59,996 alleles

Filtering AF 0.0317% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0273%

Overall 0.00229% 37/1,612,500 alleles · ultra-rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.045%	2,222
Remaining individualsnot grpmax-eligible	0.0048%	20,823
African / African-American	0.00134%	74,904
European (non-Finnish)	0.000509%	196,654

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: BCAM
Protein: p.Arg231Pro
Coding: c.692G>C
MANE Select: NM_005581
dbSNP: rs200124143
Type: single nucleotide variant
Location: chr19:44813528 (GRCh38)
Gene constraint: LOEUF 1.102 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 84.29 · 2 PDB
Residue 231: a disulfide bond; the ig-like v-type 2 domain; an α-helix

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

Similar variants

BCAM p.Arg231Gln Uncertain significance ★ ⚠ same residue
BCAM p.Arg231Ter Pathogenic same residue
BCAM p.Arg282His Benign ★★ same type
BCAM p.Leu409= Benign ★★ same type
BCAM p.Pro589Leu Likely benign ★★ same type
BCAM p.Thr539Ala Benign ★★ same type
BCAM p.Val381Ile Benign ★★ same type
BCAM p.Val540= Benign ★★ 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/bcam-p-arg231pro (accessed [today's date]).

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