Is ERCC4 p.Gln286Ter (c.856C>T) pathogenic?

ERCC4 p.Gln286Ter (c.856C>T) is classified Pathogenic in ERCC4 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-11-07). Very rare (popmax 0.0011%, sas); Associated with xeroderma pigmentosum group F.

What condition is associated with ERCC4 p.Gln286Ter (c.856C>T)?

ERCC4 p.Gln286Ter (c.856C>T) is associated with xeroderma pigmentosum group F, Fanconi anemia complementation group Q, Cockayne syndrome (ClinVar).

How common is ERCC4 p.Gln286Ter (c.856C>T) in the general population?

ERCC4 p.Gln286Ter (c.856C>T) is very rare (popmax 0.0011%, sas) (gnomAD).

ERCC4 p.Gln286Ter

Q: How is Xeroderma pigmentosum-Cockayne syndrome complex inherited?

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

c.856C>T · rs750971687 · VCV2927079

Pathogenic Single submitter

Classification

Pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

Consequence

nonsense (stop-gain)

predicted LoF

gnomAD v4.1

Rare

very rare (popmax 0.0011%, sas)

Conditions

xeroderma pigmentosum group F

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	nonsense (stop-gain)	predicted loss-of-function
NMD	predicted	premature termination codon in exon 5 of 11
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.7	GERP 1.7, phastCons 1
Overall
CADD	38.0	PHRED · no single calibrated threshold — expert panels disagree

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0011% South Asian · 1/91,000 alleles

Overall 0.000137% 2/1,458,462 alleles · very rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0011%	91,000
European (non-Finnish)	8.5e-05%	1,176,930

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: ERCC4
Protein: p.Gln286Ter
Coding: c.856C>T
MANE Select: NM_005236
dbSNP: rs750971687
Type: single nucleotide variant
Location: chr16:13930773 (GRCh38)
Gene constraint: LOEUF 0.984 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 74.60 · 13 PDB
Residue 286: the 'helicase-like' region; the 'leucine-zipper 2' region

Full ERCC4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

xeroderma pigmentosum group F — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: Fanconi anemia complementation group Q Cockayne syndrome

For Xeroderma pigmentosum-Cockayne syndrome complex (Orphanet):

Inheritance: Autosomal recessive
Onset: Infancy, Neonatal

Similar variants

ERCC4 c.1102+1G>T Likely pathogenic ★★ same condition
ERCC4 c.793-2A>G Pathogenic ★★ same condition
ERCC4 p.Arg20Ter Pathogenic ★★ same condition
ERCC4 p.Arg589Trp Pathogenic/Likely pathogenic ★★ same condition
ERCC4 p.Arg689Ser Likely pathogenic ★★ same condition
ERCC4 p.Arg772Ter Pathogenic/Likely pathogenic ★★ same condition
ERCC4 p.Cys236Arg Pathogenic/Likely pathogenic ★★ same condition
ERCC4 p.Cys723Ter Pathogenic/Likely 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/ercc4-p-gln286ter (accessed [today's date]).

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