SLC19A1 p.Ser550=
c.1650C>T · rs770080088 · VCV2414462
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0329%, mid)
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 -1.9 | GERP -1.8 |
| Overall | ||
| CADD | 2.595 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0329%
Middle Eastern · 2/6,084 alleles
Filtering AF
0.00605%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00565%
Overall
0.00651%
105/1,613,324 alleles · ultra-rare
exomes 102/1,461,108 · genomes 3/152,216 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Middle Easterngrpmax | 0.0329% | 3,042 |
| East Asian | 0.0111% | 8,975 |
| European (non-Finnish) | 0.00737% | 13,560 |
| South Asian | 0.00659% | 15,180 |
| Admixed American | 0.005% | 19,986 |
| Ashkenazi Jewishnot grpmax-eligible | 0.00338% | 29,580 |
| African / African-American | 0.00133% | 74,930 |
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.Ser550=
- Coding
- c.1650C>T
- MANE Select
- NM_194255
- dbSNP
- rs770080088
- Type
- single nucleotide variant
- Location
- chr21:45515784 (GRCh38)
- Gene constraint
- LOEUF 1.585 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 73.30 · 19 PDB
Similar variants
- SLC19A1 p.Ser550Pro Uncertain significance ★ ⚠ same residue
- 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
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-ser550 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown