FCSK p.Pro701=
c.2103G>A · rs17878832 · VCV1300567
Benign
Multiple submitters
Classification
Benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 4 submitters
gnomAD v4.1
Common
common (popmax 11.2%, afr) — too common for a highly-penetrant pathogenic allele
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | <0.2 | no splice effect predicted · four deltas, not one · how we know |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -5.9 | GERP -3.1 |
| Overall | ||
| CADD | 0.663 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
11.2%
African / African-American · 8,345/74,818 alleles
Filtering AF
11%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 10.9%
Overall
0.586%
9,352/1,596,908 alleles · common
exomes 4,519/1,444,600 · genomes 4,833/152,308 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 11.2% | 9 |
| Remaining individualsnot grpmax-eligible | 0.697% | 144 |
| Admixed American | 0.594% | 168 |
| Middle Eastern | 0.215% | 464 |
| European (non-Finnish) | 0.0176% | 5,690 |
| South Asian | 0.0171% | 5,865 |
| Ashkenazi Jewishnot grpmax-eligible | 0.00343% | 29,186 |
| Finnishnot grpmax-eligible | 0.0016% | 62,542 |
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
- FCSK
- Protein
- p.Pro701=
- Coding
- c.2103G>A
- MANE Select
- NM_145059
- dbSNP
- rs17878832
- Type
- single nucleotide variant
- Location
- chr16:70474642 (GRCh38)
- Gene constraint
- LOEUF 1.254 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 92.20
- Residue 701
- a UniProt-annotated variant site (in)
Similar variants
- FCSK p.Pro701Leu Benign/Likely benign ★★ same residue
- FCSK c.412-2A>G Likely pathogenic ★★ same type
- FCSK c.485-2A>G Uncertain significance ★★ same type
- FCSK p.Ala297Val Uncertain significance ★★ ⚠ same type
- FCSK p.Ala348Ser Uncertain significance ★★ ⚠ same type
- FCSK p.Ala481Thr Uncertain significance ★★ ⚠ same type
- FCSK p.Ala488Thr Uncertain significance ★★ same type
- FCSK p.Ala518Val 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/fcsk-p-pro701 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown