Is CDX4 p.Arg270Cys (c.808C>T) pathogenic?

CDX4 p.Arg270Cys (c.808C>T) is classified Uncertain significance in CDX4 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-12-17). AlphaMissense: likely benign (0.0739); Very rare (popmax 0.00296%, eas).

How common is CDX4 p.Arg270Cys (c.808C>T) in the general population?

CDX4 p.Arg270Cys (c.808C>T) is very rare (popmax 0.00296%, eas) (gnomAD).

What do computational predictors say about CDX4 p.Arg270Cys (c.808C>T)?

AlphaMissense predicts likely benign (score 0.0739) — an in-silico prediction, not a clinical call.

CDX4 p.Arg270Cys

c.808C>T · rs760648974 · VCV3141772

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0739 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00296%, eas)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.0739	likely benign
REVEL	0.309	indeterminate
SaProt	LLR -6.26	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.61	GERP -1.2
Regional constraint	o/e 1.08	unconstrained · MANE · 7,328 bp · p 0.2 · regional, not allelic
Overall
CADD	15.04	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00296% East Asian · 1/33,737 alleles

Filtering AF 0.000566% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000412%

Overall 0.000993% 12/1,207,875 alleles · very rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00296%	33,737
Admixed American	0.00219%	45,598
European (non-Finnish)	0.00112%	89,386

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: CDX4
Protein: p.Arg270Cys
Coding: c.808C>T
MANE Select: NM_005193
dbSNP: rs760648974
Type: single nucleotide variant
Location: chrX:73454538 (GRCh38)
Structure: AlphaFold pLDDT 63.87

Full CDX4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CDX4 p.Ala106Ser Uncertain significance ★ ⚠ same type
CDX4 p.Ala207Thr Uncertain significance ★ ⚠ same type
CDX4 p.Ala226Gly Uncertain significance ★ ⚠ same type
CDX4 p.Arg161Gly Uncertain significance ★ ⚠ same type
CDX4 p.Arg177His Uncertain significance ★ ⚠ same type
CDX4 p.Arg215Lys Uncertain significance ★ ⚠ same type
CDX4 p.Arg215Thr Uncertain significance ★ ⚠ same type
CDX4 p.Asp182Gly Uncertain significance ★ ⚠ same type

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/cdx4-p-arg270cys (accessed [today's date]).

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