Is ATP7B p.Cys157= (c.471T>C) pathogenic?

ATP7B p.Cys157= (c.471T>C) is classified Likely benign in ATP7B (ClinVar, Multiple submitters, 4 submitters; last evaluated 2024-07-20). Very rare (popmax 0.00203%, nfe); Associated with Wilson disease.

What condition is associated with ATP7B p.Cys157= (c.471T>C)?

ATP7B p.Cys157= (c.471T>C) is associated with Wilson disease (ClinVar).

How common is ATP7B p.Cys157= (c.471T>C) in the general population?

ATP7B p.Cys157= (c.471T>C) is very rare (popmax 0.00203%, nfe) (gnomAD).

How is Wilson disease inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

ATP7B p.Cys157=

c.471T>C · rs748497024 · VCV1145536

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 4 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00203%, nfe)

Conditions

Wilson disease

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
Conservation	phyloP -1.2	GERP -5.6
Overall
CADD	4.698	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00203% European (non-Finnish) · 24/1,180,026 alleles

Filtering AF 0.00138% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00116%

Overall 0.00171% 25/1,461,878 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00203%	49,168
Remaining individualsnot grpmax-eligible	0.0016%	62,510

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: ATP7B
Protein: p.Cys157=
Coding: c.471T>C
MANE Select: NM_000053
dbSNP: rs748497024
Type: single nucleotide variant
Location: chr13:51974749 (GRCh38)
Gene constraint: LOEUF 1.063 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 71.83 · 13 PDB
Residue 157: the hma 2 domain; a binding site; an α-helix; a UniProt-annotated variant site (in wd; uncertain significance)

Full ATP7B gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Wilson disease — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Wilson disease (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Adult, Childhood, Elderly
Prevalence: 1-9 / 100 000 (Worldwide)

Similar variants

ATP7B p.Cys157Phe Uncertain significance ★★ ⚠ same residue
ATP7B c.1285+2T>A Pathogenic/Likely pathogenic ★★ same condition
ATP7B c.1286-2A>G Pathogenic ★★ same condition
ATP7B c.1543+1G>A Pathogenic/Likely pathogenic ★★ same condition
ATP7B c.1543+1G>C Pathogenic ★★ same condition
ATP7B c.1544-2A>G Pathogenic/Likely pathogenic ★★ same condition
ATP7B c.1707+1G>A Pathogenic/Likely pathogenic ★★ same condition
ATP7B c.1707+5G>A Pathogenic ★★ 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/atp7b-p-cys157 (accessed [today's date]).

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