SLC19A1 p.Ser168=
c.504C>G · rs763544507 · VCV1905497
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.00822%, nfe)
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 -15 | GERP -3.7 |
| Overall | ||
| CADD | 0.128 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00822%
European (non-Finnish) · 96/1,167,572 alleles
Filtering AF
0.00688%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00639%
Overall
0.00668%
106/1,587,408 alleles · very rare
exomes 97/1,435,204 · genomes 9/152,204 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| European (non-Finnish)grpmax | 0.00822% | 12,162 |
| Remaining individualsnot grpmax-eligible | 0.00651% | 15,362 |
| Admixed American | 0.00536% | 18,643 |
| African / African-American | 0.00405% | 24,697 |
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
- SLC19A1
- Protein
- p.Ser168=
- Coding
- c.504C>G
- MANE Select
- NM_194255
- dbSNP
- rs763544507
- Type
- single nucleotide variant
- Location
- chr21:45531834 (GRCh38)
- Gene constraint
- LOEUF 1.585 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 73.30 · 19 PDB
- Residue 168
- an α-helix
Similar variants
- COL18A1 p.Arg1081Ter Pathogenic/Likely pathogenic ★★ same type
- COL18A1 p.Arg915Ter Pathogenic/Likely pathogenic ★★ same type
- RFC1 p.Arg383Ter Pathogenic/Likely pathogenic ★★ same type
- COL18A1 c.*30G>A Uncertain significance ★★ same type
- COL18A1 p.Ala1089Thr Uncertain significance ★★ ⚠ same type
- COL18A1 p.Ala1254Val Uncertain significance ★★ ⚠ same type
- COL18A1 p.Arg1081Gln Uncertain significance ★★ ⚠ same type
- COL18A1 p.Arg1183His 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/slc19a1-p-ser168 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown