Is CDK13 p.Glu306Asp (c.918G>C) pathogenic?

CDK13 p.Glu306Asp (c.918G>C) is classified Uncertain significance in CDK13 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-07-09). AlphaMissense: likely benign (0.1037); Very rare (popmax 0.00627%, amr); Associated with Inborn genetic diseases.

What condition is associated with CDK13 p.Glu306Asp (c.918G>C)?

CDK13 p.Glu306Asp (c.918G>C) is associated with Inborn genetic diseases (ClinVar).

How common is CDK13 p.Glu306Asp (c.918G>C) in the general population?

CDK13 p.Glu306Asp (c.918G>C) is very rare (popmax 0.00627%, amr) (gnomAD).

What do computational predictors say about CDK13 p.Glu306Asp (c.918G>C)?

AlphaMissense predicts likely benign (score 0.1037) — an in-silico prediction, not a clinical call.

CDK13 p.Glu306Asp

c.918G>C · VCV3489425

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1037 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00627%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1037	likely benign
REVEL	0.023	moderately benign-leaning
SaProt	LLR -5.81	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 1.4	GERP 1.2, phastCons 1
Regional constraint	o/e 1.13	unconstrained · MANE · 47 kb · p 8.4e-05 · regional, not allelic
Overall
CADD	18.06	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 0.00627% Admixed American · 3/47,816 alleles

Filtering AF 0.00166% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000861%

Overall 0.000457% 7/1,532,744 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00627%	15,939
African / African-American	0.00141%	71,174
European (non-Finnish)	0.000263%	380,764

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: CDK13
Protein: p.Glu306Asp
Coding: c.918G>C
MANE Select: NM_003718
Type: single nucleotide variant
Location: chr7:39951559 (GRCh38)
Gene constraint: LOEUF 0.434 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 50.59 · 2 PDB
Residue 306: the 'disordered' region

Full CDK13 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

CDK13 p.Glu306Ter Pathogenic ★ same residue
CDK13 p.Ala1301Val Uncertain significance ★★ ⚠ same condition
CDK13 p.Ala134Val Uncertain significance ★★ ⚠ same condition
CDK13 p.Ala182Val Uncertain significance ★★ ⚠ same condition
CDK13 p.Ala331Val Uncertain significance ★★ ⚠ same condition
CDK13 p.Ala504Val Uncertain significance ★★ ⚠ same condition
CDK13 p.Ala970Val Uncertain significance ★★ ⚠ same condition
CDK13 p.Arg1366Cys 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/cdk13-p-glu306asp (accessed [today's date]).

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