Is MAPK3 p.Pro285Ser (c.853C>T) pathogenic?

MAPK3 p.Pro285Ser (c.853C>T) is classified Uncertain significance in MAPK3 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-10-29). AlphaMissense: ambiguous (0.354); Very rare (popmax 0.00102%, nfe).

How common is MAPK3 p.Pro285Ser (c.853C>T) in the general population?

MAPK3 p.Pro285Ser (c.853C>T) is very rare (popmax 0.00102%, nfe) (gnomAD).

What do computational predictors say about MAPK3 p.Pro285Ser (c.853C>T)?

AlphaMissense predicts ambiguous (score 0.354) — an in-silico prediction, not a clinical call.

MAPK3 p.Pro285Ser

c.853C>T · VCV3543138

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.354 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00102%, nfe)

Computational evidence

Protein change
AlphaMissense	0.354	ambiguous
REVEL	0.395	indeterminate
SaProt	LLR -11.19	damaging
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 1.9, phastCons 1
Regional constraint	o/e 0.83	unconstrained · MANE · 604 bp · p 0.042 · regional, not allelic
Overall
CADD	25.6	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00102% European (non-Finnish) · 12/1,180,022 alleles

Filtering AF 0.000542% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000428%

Overall 0.000805% 13/1,614,016 alleles · very rare exomes 12/1,461,846 · genomes 1/152,170 · joint denominator

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0016%	62,484
European (non-Finnish)grpmax	0.00102%	98,335

Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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: MAPK3
Protein: p.Pro285Ser
Coding: c.853C>T
MANE Select: NM_002746
Type: single nucleotide variant
Location: chr16:30117208 (GRCh38)
Gene constraint: LOEUF 0.935 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 89.09 · 8 PDB
Residue 285: the protein kinase domain

Full MAPK3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

MAPK3 p.Gly11= Likely benign ★★ same type
MAPK3 p.Pro336= Benign/Likely benign ★★ same type
MAPK3 p.Tyr148Cys Likely pathogenic ★ same type
MAPK3 p.Ala378Asp Uncertain significance ★ ⚠ same type
MAPK3 p.Arg15Ser Uncertain significance ★ ⚠ same type
MAPK3 p.Arg242Gln Uncertain significance ★ ⚠ same type
MAPK3 p.Arg309Gln Uncertain significance ★ ⚠ same type
MAPK3 p.Arg309Gly 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/mapk3-p-pro285ser (accessed [today's date]).

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