Is BCO2 p.Thr444Met (c.1331C>T) pathogenic?

BCO2 p.Thr444Met (c.1331C>T) is classified Uncertain significance in BCO2 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-12-09). AlphaMissense: likely benign (0.0655); Rare (popmax 0.118%, mid).

How common is BCO2 p.Thr444Met (c.1331C>T) in the general population?

BCO2 p.Thr444Met (c.1331C>T) is rare (popmax 0.118%, mid) (gnomAD).

What do computational predictors say about BCO2 p.Thr444Met (c.1331C>T)?

AlphaMissense predicts likely benign (score 0.0655) — an in-silico prediction, not a clinical call.

BCO2 p.Thr444Met

c.1331C>T · rs146858215 · VCV2375088

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0655 · ACMG-weighted

gnomAD v4.1

Rare

rare (popmax 0.118%, mid)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.0655	likely benign
REVEL	0.487	indeterminate
SaProt	LLR -8.41	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.8	GERP -0.78, phastCons 1
Regional constraint	o/e 0.97	unconstrained · MANE · 42 kb · p 0.37 · regional, not allelic
Overall
CADD	23.8	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.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.118% Middle Eastern · 7/5,942 alleles

Filtering AF 0.0552% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0414%

Overall 0.0159% 248/1,561,330 alleles · rare

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.118%	849
Admixed American	0.0638%	1,567
South Asian	0.0437%	2,287
Remaining individualsnot grpmax-eligible	0.0325%	3,077
Ashkenazi Jewishnot grpmax-eligible	0.0212%	4,721
East Asian	0.0205%	4,872
European (non-Finnish)	0.0109%	9,153
Finnishnot grpmax-eligible	0.00502%	19,925
African / African-American	0.00469%	21,341

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: BCO2
Protein: p.Thr444Met
Coding: c.1331C>T
MANE Select: NM_031938
dbSNP: rs146858215
Type: single nucleotide variant
Location: chr11:112213860 (GRCh38)
Gene constraint: LOEUF 1.047 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 88.41

Full BCO2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BCO2 p.Arg472Ter Likely benign ★★ same type
BCO2 p.Ala115Val Uncertain significance ★ ⚠ same type
BCO2 p.Ala223Gly Uncertain significance ★ ⚠ same type
BCO2 p.Ala318Val Uncertain significance ★ ⚠ same type
BCO2 p.Ala437Ser Uncertain significance ★ ⚠ same type
BCO2 p.Arg184Trp Uncertain significance ★ ⚠ same type
BCO2 p.Arg253Gln Uncertain significance ★ ⚠ same type
BCO2 p.Arg27Trp 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/bco2-p-thr444met (accessed [today's date]).

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