MAPKAPK3 p.Ser128=
c.384C>T · rs1214442364 · VCV1897568
Uncertain significance
Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0117%, amr)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal. | ||
| Splicing | ||
| SpliceAI | Δ0.36 | acceptor loss, 24 bp away · masked 0 · deltas |
|---|---|---|
| Pangolin | Δ0.39 | loss · gain 0.00 · agrees with SpliceAI · independent |
| Constraint at this position | ||
| Conservation | phyloP 3.3 | GERP 1.5, phastCons 1 |
| Overall | ||
| CADD | 9.231 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0117%
Admixed American · 7/60,000 alleles
Filtering AF
0.00543%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0038%
Overall
0.000434%
7/1,614,014 alleles · ultra-rare
exomes 2/1,461,838 · genomes 5/152,176 · joint denominator
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
- MAPKAPK3
- Protein
- p.Ser128=
- Coding
- c.384C>T
- MANE Select
- NM_001243925
- dbSNP
- rs1214442364
- Type
- single nucleotide variant
- Location
- chr3:50641731 (GRCh38)
- Gene constraint
- LOEUF 0.943 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 83.10 · 5 PDB
- Residue 128
- the protein kinase domain; an α-helix
Similar variants
- MAPKAPK3 p.Ser128Gly Uncertain significance ★ ⚠ same residue
- MAPKAPK3 p.Ala181Ser Uncertain significance ★★ ⚠ same type
- MAPKAPK3 p.Arg112His Uncertain significance ★★ ⚠ same type
- MAPKAPK3 p.Arg148Gln Uncertain significance ★★ ⚠ same type
- MAPKAPK3 p.Arg148Trp Uncertain significance ★★ ⚠ same type
- MAPKAPK3 p.Arg259Cys Uncertain significance ★★ same type
- MAPKAPK3 p.Arg282Cys Uncertain significance ★★ ⚠ same type
- MAPKAPK3 p.Arg282His 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/mapkapk3-p-ser128 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown