Is CNOT3 p.Pro338Ala (c.1012C>G) pathogenic?

CNOT3 p.Pro338Ala (c.1012C>G) is classified Uncertain significance in CNOT3 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-03-07). AlphaMissense: likely benign (0.0502); Absent from gnomAD v4.1; Associated with Inborn genetic diseases.

What condition is associated with CNOT3 p.Pro338Ala (c.1012C>G)?

CNOT3 p.Pro338Ala (c.1012C>G) is associated with Inborn genetic diseases (ClinVar).

How common is CNOT3 p.Pro338Ala (c.1012C>G) in the general population?

CNOT3 p.Pro338Ala (c.1012C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CNOT3 p.Pro338Ala (c.1012C>G)?

AlphaMissense predicts likely benign (score 0.0502) — an in-silico prediction, not a clinical call.

CNOT3 p.Pro338Ala

c.1012C>G · VCV3834569

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0502 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.0502	likely benign
REVEL	0.026	moderately benign-leaning
SaProt	LLR -6.26	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 1.3	GERP -0.1, phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 7,004 bp · p 0.37 · regional, not allelic
Overall
CADD	17.84	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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: CNOT3
Protein: p.Pro338Ala
Coding: c.1012C>G
MANE Select: NM_014516
Type: single nucleotide variant
Location: chr19:54148265 (GRCh38)
Gene constraint: LOEUF 0.057 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 68.53 · 6 PDB
Residue 338: the 'disordered' region

Full CNOT3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

CNOT3 p.Pro338Leu Uncertain significance ★ ⚠ same residue
CNOT3 p.Ala438Val Uncertain significance ★★ ⚠ same condition
CNOT3 p.Arg290Cys Uncertain significance ★★ ⚠ same condition
CNOT3 p.Glu533Gln Uncertain significance ★★ ⚠ same condition
CNOT3 p.Gly405Ser Uncertain significance ★★ ⚠ same condition
CNOT3 p.Met182Val Uncertain significance ★★ ⚠ same condition
CNOT3 p.Pro244Ala Uncertain significance ★★ ⚠ same condition
CNOT3 p.Pro320Leu Uncertain significance ★★ ⚠ 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/cnot3-p-pro338ala (accessed [today's date]).

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