Is PAK4 p.Pro274Ala (c.820C>G) pathogenic?

PAK4 p.Pro274Ala (c.820C>G) is classified Uncertain significance in PAK4 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-11-05). AlphaMissense: likely benign (0.0455); Rare (popmax 0.148%, afr).

How common is PAK4 p.Pro274Ala (c.820C>G) in the general population?

PAK4 p.Pro274Ala (c.820C>G) is rare (popmax 0.148%, afr) (gnomAD).

What do computational predictors say about PAK4 p.Pro274Ala (c.820C>G)?

AlphaMissense predicts likely benign (score 0.0455) — an in-silico prediction, not a clinical call.

PAK4 p.Pro274Ala

c.820C>G · VCV4564075

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0455 · ACMG-weighted

gnomAD v4.1

Rare

rare (popmax 0.148%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0455	likely benign
REVEL	0.064	moderately benign-leaning
SaProt	LLR -6.07	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 0.18	GERP -1.4
Overall
CADD	11.24	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 0.148% African / African-American · 109/73,844 alleles

Filtering AF 0.125% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.117%

Overall 0.00806% 127/1,575,588 alleles · rare exomes 63/1,423,854 · genomes 64/151,734 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.148%	677
Remaining individualsnot grpmax-eligible	0.0147%	6,790
Admixed American	0.0109%	9,208
European (non-Finnish)	0.000258%	387,875

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: PAK4
Protein: p.Pro274Ala
Coding: c.820C>G
MANE Select: NM_005884
Type: single nucleotide variant
Location: chr19:39173732 (GRCh38)
Gene constraint: LOEUF 1.268 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 71.26 · 50 PDB
Residue 274: the 'linker' region; the 'disordered' region

Full PAK4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

PAK4 p.Ala573Ser Benign ★★ same type
PAK4 p.Ala109Asp Uncertain significance ★ ⚠ same type
PAK4 p.Ala111Ser Uncertain significance ★ ⚠ same type
PAK4 p.Ala125Asp Uncertain significance ★ ⚠ same type
PAK4 p.Ala13Ser Uncertain significance ★ ⚠ same type
PAK4 p.Ala13Thr Uncertain significance ★ ⚠ same type
PAK4 p.Ala13Val Uncertain significance ★ ⚠ same type
PAK4 p.Ala154Ser 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/pak4-p-pro274ala (accessed [today's date]).

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