MCM4 p.Gln676=
c.2028G>A · rs201340636 · VCV2719510
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0283%, amr)
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 -0.46 | GERP -3.8 |
| Overall | ||
| CADD | 2.317 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0283%
Admixed American · 17/60,032 alleles
Filtering AF
0.018%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0147%
Overall
0.00112%
18/1,614,228 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.0283% | 3,531 |
| Remaining individualsnot grpmax-eligible | 0.0016% | 62,512 |
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
- MCM4
- Protein
- p.Gln676=
- Coding
- c.2028G>A
- MANE Select
- NM_182746
- dbSNP
- rs201340636
- Type
- single nucleotide variant
- Location
- chr8:47972956 (GRCh38)
- Gene constraint
- LOEUF 0.806 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 74.25 · 28 PDB
- Residue 676
- the mcm c-terminal aaa(+) atpase domain
Similar variants
- MCM4 c.71-2A>G Pathogenic ★★ same type
- MCM4 c.-74C>T Uncertain significance ★★ same type
- MCM4 c.*56G>A Uncertain significance ★★ same type
- MCM4 p.Ala141Gly Uncertain significance ★★ ⚠ same type
- MCM4 p.Ala436Thr Uncertain significance ★★ ⚠ same type
- MCM4 p.Ala668Thr Uncertain significance ★★ ⚠ same type
- MCM4 p.Ala685Val Uncertain significance ★★ ⚠ same type
- MCM4 p.Ala694Thr 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/mcm4-p-gln676 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown