Is ERCC3 p.Arg195Ter (c.583C>T) pathogenic?

ERCC3 p.Arg195Ter (c.583C>T) is classified Pathogenic in ERCC3 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2024-10-08). Very rare (popmax 0.000847%, nfe); Associated with xeroderma pigmentosum.

What condition is associated with ERCC3 p.Arg195Ter (c.583C>T)?

ERCC3 p.Arg195Ter (c.583C>T) is associated with xeroderma pigmentosum, xeroderma pigmentosum group B (ClinVar).

How common is ERCC3 p.Arg195Ter (c.583C>T) in the general population?

ERCC3 p.Arg195Ter (c.583C>T) is very rare (popmax 0.000847%, nfe) (gnomAD).

How is Xeroderma pigmentosum inherited?

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

ERCC3 p.Arg195Ter

c.583C>T · rs138385061 · VCV627443

Pathogenic Multiple submitters

Classification

Pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

Consequence

nonsense (stop-gain)

predicted LoF

gnomAD v4.1

Rare

very rare (popmax 0.000847%, nfe)

Conditions

xeroderma pigmentosum

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 15
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 8.6	GERP 2.5, phastCons 1
Overall
CADD	39.0	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 0.000847% European (non-Finnish) · 10/1,179,990 alleles

Filtering AF 0.000429% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000312%

Overall 0.000682% 11/1,613,944 alleles · very rare

Ancestry group	Frequency	1 in
Ashkenazi Jewishnot grpmax-eligible	0.00338%	29,606
European (non-Finnish)grpmax	0.000847%	117,999

Ashkenazi Jewish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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: ERCC3
Protein: p.Arg195Ter
Coding: c.583C>T
MANE Select: NM_000122
dbSNP: rs138385061
Type: single nucleotide variant
Location: chr2:127289763 (GRCh38)
Gene constraint: LOEUF 0.797 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 76.34 · 56 PDB
Residue 195: an α-helix

Full ERCC3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

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

Also linked: xeroderma pigmentosum group B

For Xeroderma pigmentosum (Orphanet):

Inheritance: Autosomal recessive
Onset: All ages
Prevalence: 1-9 / 1 000 000 (United States)

Similar variants

ERCC3 p.Arg195Gly Uncertain significance ★ ⚠ same residue
ERCC3 p.Arg195Leu Uncertain significance ★ ⚠ same residue
ERCC3 c.1828-1G>C Likely pathogenic ★★ same condition
ERCC3 c.471+1G>A Pathogenic ★★ same condition
ERCC3 c.657+1G>A Likely pathogenic ★★ same condition
ERCC3 p.Arg109Ter Pathogenic/Likely pathogenic ★★ same condition
ERCC3 p.Arg425Ter Pathogenic ★★ same condition
ERCC3 p.Arg452Ter 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/ercc3-p-arg195ter (accessed [today's date]).

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