Is CDCA7 p.Arg343Cys (c.1027C>T) pathogenic?

CDCA7 p.Arg343Cys (c.1027C>T) is classified Uncertain significance in CDCA7 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-10-24). AlphaMissense: likely benign (0.3255); Very rare (popmax 0.0044%, sas).

How common is CDCA7 p.Arg343Cys (c.1027C>T) in the general population?

CDCA7 p.Arg343Cys (c.1027C>T) is very rare (popmax 0.0044%, sas) (gnomAD).

What do computational predictors say about CDCA7 p.Arg343Cys (c.1027C>T)?

AlphaMissense predicts likely benign (score 0.3255) — an in-silico prediction, not a clinical call.

CDCA7 p.Arg343Cys

c.1027C>T · rs1220522546 · VCV2186645

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.3255 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.0044%, sas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.3255	likely benign
REVEL	0.274	benign-leaning
SaProt	LLR -9.55	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.7	GERP -2.4, phastCons 1
Regional constraint	o/e 0.89	unconstrained · MANE · 11 kb · p 0.02 · regional, not allelic
Overall
CADD	24.7	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.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM R264C vs ClinVar R343C) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0044% South Asian · 4/90,978 alleles

Filtering AF 0.00143% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000892%

Overall 0.00112% 18/1,613,712 alleles · very rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0044%	22,744
Ashkenazi Jewishnot grpmax-eligible	0.00338%	29,604
Remaining individualsnot grpmax-eligible	0.0016%	62,482
European (non-Finnish)	0.00102%	98,327

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: CDCA7
Protein: p.Arg343Cys
Coding: c.1027C>T
MANE Select: NM_031942
dbSNP: rs1220522546
Type: single nucleotide variant
Location: chr2:173365584 (GRCh38)
Gene constraint: LOEUF 0.676 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 68.93 · 2 PDB

Full CDCA7 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CDCA7 c.384+2T>C Uncertain significance ★★ same type
CDCA7 p.Ala157Val Uncertain significance ★★ ⚠ same type
CDCA7 p.Ala391Gly Uncertain significance ★★ ⚠ same type
CDCA7 p.Arg134Leu Uncertain significance ★★ ⚠ same type
CDCA7 p.Arg134Trp Uncertain significance ★★ ⚠ same type
CDCA7 p.Arg171Cys Uncertain significance ★★ ⚠ same type
CDCA7 p.Arg171Leu Uncertain significance ★★ ⚠ same type
CDCA7 p.Arg239Gln 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/cdca7-p-arg343cys (accessed [today's date]).

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