Is MARK4 p.Lys492Arg (c.1475A>G) pathogenic?

MARK4 p.Lys492Arg (c.1475A>G) is classified Uncertain significance in MARK4 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-03-05). AlphaMissense: likely benign (0.0866); Very rare (popmax 0.00536%, afr).

How common is MARK4 p.Lys492Arg (c.1475A>G) in the general population?

MARK4 p.Lys492Arg (c.1475A>G) is very rare (popmax 0.00536%, afr) (gnomAD).

What do computational predictors say about MARK4 p.Lys492Arg (c.1475A>G)?

AlphaMissense predicts likely benign (score 0.0866) — an in-silico prediction, not a clinical call.

MARK4 p.Lys492Arg

c.1475A>G · VCV3870634

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0866 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00536%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0866	likely benign
REVEL	0.225	benign-leaning
SaProt	LLR -4.77	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 9.2	GERP 2.4, phastCons 1
Regional constraint	o/e 0.88	unconstrained · MANE · 24 kb · p 0.0023 · regional, not allelic
Overall
CADD	25.7	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.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00536% African / African-American · 4/74,630 alleles

Filtering AF 0.00175% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00104%

Overall 0.00263% 4/152,242 alleles · very rare

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: MARK4
Protein: p.Lys492Arg
Coding: c.1475A>G
MANE Select: NM_001199867
Type: single nucleotide variant
Location: chr19:45287645 (GRCh38)
Gene constraint: LOEUF 0.361 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 67.97 · 2 PDB
Residue 492: the 'disordered' region

Full MARK4 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

MARK4 p.Leu226= Benign ★★ same type
MARK4 p.Thr461= Benign ★★ same type
MARK4 p.Ala168Ser Uncertain significance ★ ⚠ same type
MARK4 p.Ala389Val Uncertain significance ★ ⚠ same type
MARK4 p.Ala457Val Uncertain significance ★ ⚠ same type
MARK4 p.Ala462Val Uncertain significance ★ ⚠ same type
MARK4 p.Ala479Thr Uncertain significance ★ ⚠ same type
MARK4 p.Ala47Thr 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/mark4-p-lys492arg (accessed [today's date]).

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