Is CDK13 p.Arg203His (c.608G>A) pathogenic?

CDK13 p.Arg203His (c.608G>A) is classified Uncertain significance in CDK13 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-10-13). AlphaMissense: likely benign (0.2313); Absent from gnomAD v4.1.

How common is CDK13 p.Arg203His (c.608G>A) in the general population?

CDK13 p.Arg203His (c.608G>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CDK13 p.Arg203His (c.608G>A)?

AlphaMissense predicts likely benign (score 0.2313) — an in-silico prediction, not a clinical call.

CDK13 p.Arg203His

c.608G>A · rs2116059187 · VCV2794319

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2313 · ACMG-weighted

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,300,064)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.2313	likely benign
REVEL	0.051	moderately benign-leaning
SaProt	LLR -6.41	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 7.5	GERP 0.57, phastCons 1
Regional constraint	o/e 1.13	unconstrained · MANE · 47 kb · p 8.4e-05 · regional, not allelic
Overall
CADD	21.8	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

No allele count reported in gnomAD v4.1 (AN 1,300,064). This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: CDK13
Protein: p.Arg203His
Coding: c.608G>A
MANE Select: NM_003718
dbSNP: rs2116059187
Type: single nucleotide variant
Location: chr7:39951249 (GRCh38)
Gene constraint: LOEUF 0.434 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 50.59 · 2 PDB
Residue 203: the 'disordered' region

Full CDK13 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CDK13 p.Arg203Gly Uncertain significance ★★ ⚠ same residue
CDK13 p.Arg203Cys Uncertain significance ★ ⚠ same residue
CDK13 p.Arg203Leu Uncertain significance ★ ⚠ same residue
CDK13 p.Ala732Thr Likely pathogenic ★★ same type
CDK13 p.Arg1025Ter Pathogenic/Likely pathogenic ★★ same type
CDK13 p.Arg737Cys Pathogenic ★★ same type
CDK13 p.Arg751Gln Pathogenic/Likely pathogenic ★★ same type
CDK13 p.Arg860Gln Pathogenic/Likely pathogenic ★★ 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/cdk13-p-arg203his (accessed [today's date]).

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