Is BCOR p.Arg1018Pro (c.3053G>C) pathogenic?

BCOR p.Arg1018Pro (c.3053G>C) is classified Uncertain significance in BCOR (ClinVar, No assertion criteria, 1 submitter). AlphaMissense: likely pathogenic (0.9974); Absent from gnomAD v4.1; Associated with microphthalmia, syndromic 2.

What condition is associated with BCOR p.Arg1018Pro (c.3053G>C)?

BCOR p.Arg1018Pro (c.3053G>C) is associated with microphthalmia, syndromic 2 (ClinVar).

How common is BCOR p.Arg1018Pro (c.3053G>C) in the general population?

BCOR p.Arg1018Pro (c.3053G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about BCOR p.Arg1018Pro (c.3053G>C)?

AlphaMissense predicts likely pathogenic (score 0.9974) — an in-silico prediction, not a clinical call.

BCOR p.Arg1018Pro

c.3053G>C · rs751015767 · VCV1711199

Uncertain significance No assertion criteria

Classification

Uncertain significance

ClinVar

Review

No assertion criteria ☆☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9974 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Conditions

microphthalmia, syndromic 2

Computational evidence

Protein change
AlphaMissense	0.9974	likely pathogenic · top 3% in BCOR
REVEL	0.427	indeterminate
SaProt	LLR -5.88	tolerated
⇒ AlphaMissense calls this damaging; SaProt does not; REVEL is indeterminate.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.9	GERP 1.7, phastCons 1
Regional constraint	o/e 0.53	unconstrained · MANE · 7,889 bp · p 9.6e-07 · regional, not allelic
Overall
CADD	31.0	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: BCOR
Protein: p.Arg1018Pro
Coding: c.3053G>C
MANE Select: NM_001123385
dbSNP: rs751015767
Type: single nucleotide variant
Location: chrX:40071158 (GRCh38)
Structure: AlphaFold pLDDT 39.82 · 5 PDB

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

Disease context

microphthalmia, syndromic 2 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

BCOR p.Arg1018His Uncertain significance ★ ⚠ same residue
BCOR p.Arg1163Ter Pathogenic ★★ same condition
BCOR p.Arg1217Ter Pathogenic ★★ same condition
BCOR p.Arg1514Ter Pathogenic ★★ same condition
BCOR p.Arg342Ter Pathogenic ★★ same condition
BCOR p.Arg976Ter Pathogenic ★★ same condition
BCOR p.Ala1262Ser Uncertain significance ★★ ⚠ same condition
BCOR p.Ala1307Pro Uncertain significance ★★ ⚠ same condition

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/bcor-p-arg1018pro (accessed [today's date]).

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