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MAP3K20 p.Cys22=

c.66C>T · rs147113074 · VCV1531699

Benign Single submitter
Classification
Benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
rare (popmax 0.491%, afr)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI<0.2no splice effect predicted · four deltas, not one · how we know
Constraint at this position
ConservationphyloP 0.44GERP 1.7, phastCons 0.99
Overall
CADD12.76PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.491% African / African-American · 367/74,806 alleles
Filtering AF 0.449% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.433%
Overall 0.0492% 794/1,613,058 alleles · rare exomes 548/1,461,382 · genomes 246/151,676 · joint denominator
Ancestry group Frequency 1 in
African / African-Americangrpmax 0.491% 204
Remaining individualsnot grpmax-eligible 0.0752% 1,329
Admixed American 0.0517% 1,933
Middle Eastern 0.0495% 2,020
European (non-Finnish) 0.0287% 3,480
South Asian 0.0055% 18,192
Finnishnot grpmax-eligible 0.00313% 31,950

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
MAP3K20
Protein
p.Cys22=
Coding
c.66C>T
MANE Select
NM_016653
dbSNP
rs147113074
Type
single nucleotide variant
Location
chr2:173091097 (GRCh38)
Gene constraint
LOEUF 0.569 · pLI 0.14 (gnomAD)
Structure
AlphaFold pLDDT 69.15 · 8 PDB
Residue 22
a binding site; the protein kinase domain
Full MAP3K20 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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/map3k20-p-cys22 (accessed [today's date]).

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