SLC19A1 p.Arg422=
c.1266G>A · rs1001857980 · VCV2979641
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0117%, amr)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| REVEL | 0.027 | moderately benign-leaning |
|---|---|---|
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP -0.75 | GERP -3.5, phastCons 0.005 |
| Overall | ||
| CADD | 2.338 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0117%
Admixed American · 7/60,016 alleles
Filtering AF
0.00543%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0038%
Overall
0.000434%
7/1,613,276 alleles · ultra-rare
exomes 6/1,461,032 · genomes 1/152,244 · joint denominator
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.Arg422=
- Coding
- c.1266G>A
- MANE Select
- NM_194255
- dbSNP
- rs1001857980
- Type
- single nucleotide variant
- Location
- chr21:45525844 (GRCh38)
- Gene constraint
- LOEUF 1.585 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 73.30 · 19 PDB
- Residue 422
- a turn
Similar variants
- SLC19A1 p.Arg422Gln 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-arg422 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown