Is BCAM p.Pro277Ser (c.829C>T) pathogenic?

BCAM p.Pro277Ser (c.829C>T) is classified Uncertain significance in BCAM (ClinVar, Single submitter, 1 submitter; last evaluated 2025-04-07). AlphaMissense: likely benign (0.0689); Ultra-rare (popmax 0.0295%, eas).

How common is BCAM p.Pro277Ser (c.829C>T) in the general population?

BCAM p.Pro277Ser (c.829C>T) is ultra-rare (popmax 0.0295%, eas) (gnomAD).

What do computational predictors say about BCAM p.Pro277Ser (c.829C>T)?

AlphaMissense predicts likely benign (score 0.0689) — an in-silico prediction, not a clinical call.

BCAM p.Pro277Ser

c.829C>T · rs748377367 · VCV3133206

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0689 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0295%, eas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0689	likely benign
REVEL	0.017	moderately benign-leaning
SaProt	LLR -7.00	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 -0.38	GERP -2.8
Regional constraint	o/e 1.02	unconstrained · MANE · 12 kb · p 0.64 · regional, not allelic
Overall
CADD	2.146	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.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0295% East Asian · 13/44,092 alleles

Filtering AF 0.0174% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0138%

Overall 0.00114% 18/1,583,042 alleles · ultra-rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.0295%	3,392
Remaining individualsnot grpmax-eligible	0.00163%	61,414
European (non-Finnish)	0.000342%	292,696

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.Pro277Ser
Coding: c.829C>T
MANE Select: NM_005581
dbSNP: rs748377367
Type: single nucleotide variant
Location: chr19:44814196 (GRCh38)
Gene constraint: LOEUF 1.102 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 84.29 · 2 PDB
Residue 277: the ig-like c2-type 1 domain

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

Similar variants

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
BCAM p.Ala129Ser Uncertain significance ★ ⚠ same type
BCAM p.Ala129Thr 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/bcam-p-pro277ser (accessed [today's date]).

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