MKRN3 p.Ser439=
c.1317C>T · rs762870666 · VCV752071
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0579%, eas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -0.3 | GERP -2.2 |
| Overall | ||
| CADD | 7.735 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0579%
East Asian · 26/44,892 alleles
Filtering AF
0.0405%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0347%
Overall
0.0018%
29/1,614,162 alleles · ultra-rare
exomes 27/1,461,878 · genomes 2/152,284 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| East Asiangrpmax | 0.0579% | 1,727 |
| European (non-Finnish) | 0.000254% | 393,346 |
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
- MKRN3
- Protein
- p.Ser439=
- Coding
- c.1317C>T
- MANE Select
- NM_005664
- dbSNP
- rs762870666
- Type
- single nucleotide variant
- Location
- chr15:23567099 (GRCh38)
- Gene constraint
- LOEUF 1.665 · pLI 0.28 (gnomAD)
- Structure
- AlphaFold pLDDT 64.59 · 1 PDB
Similar variants
- MKRN3 p.Ser439Gly Likely benign ★ same residue
- MKRN3 c.-81C>T Uncertain significance ★★ same type
- MKRN3 p.Arg345His Uncertain significance ★★ ⚠ same type
- MKRN3 p.Gly172Asp Uncertain significance ★★ ⚠ same type
- MKRN3 p.His496Arg Uncertain significance ★★ ⚠ same type
- MKRN3 p.Thr145Met Uncertain significance ★★ ⚠ same type
- MKRN3 p.Gly131= Benign/Likely benign ★★ same type
- MKRN3 p.His119= Likely benign ★★ 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/mkrn3-p-ser439 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown