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ERBB3 p.Thr618=

c.1854C>G · VCV4692806

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0111%, eas)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI—not assessed · no allele here is in the release
Constraint at this position
ConservationphyloP 0.19GERP -3.7, phastCons 0.97
Overall
CADD6.329PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.0111% East Asian · 5/44,896 alleles
Filtering AF 0.00594% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00453%
Overall 0.00105% 17/1,613,718 alleles · ultra-rare exomes 15/1,461,664 · genomes 2/152,054 · joint denominator
Ancestry group Frequency 1 in
East Asiangrpmax 0.0111% 8,979
South Asian 0.011% 9,105
Remaining individualsnot grpmax-eligible 0.0032% 31,233

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
ERBB3
Protein
p.Thr618=
Coding
c.1854C>G
MANE Select
NM_001982
Type
single nucleotide variant
Location
chr12:56094551 (GRCh38)
Gene constraint
LOEUF 0.695 · pLI <0.01 (gnomAD)
Structure
AlphaFold pLDDT 72.90 · 23 PDB
Full ERBB3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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/erbb3-p-thr618 (accessed [today's date]).

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