ADAMTS18 p.Arg830Pro
c.2489G>C · rs1035878515 · VCV837858
Computational evidence
| Protein change | ||
| AlphaMissense | 0.8608 | likely pathogenic |
|---|---|---|
| REVEL | 0.148 | moderately benign-leaning |
| SaProt | LLR -15.57 | damaging |
| ⇒ AlphaMissense and SaProt call this damaging; REVEL does not. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 1.8 | GERP 2, phastCons 0.93 |
| Regional constraint | o/e 1.33 | unconstrained · MANE · 151 kb · p 3.5e-38 · regional, not allelic |
| Overall | ||
| CADD | 20.4 | PHRED · no single calibrated threshold — expert panels disagree |
AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.
Population frequency
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Remaining individualsnot grpmax-eligible | 0.0016% | 62,498 |
| European (non-Finnish)grpmax | 0.000339% | 294,990 |
Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.
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
- ADAMTS18
- Protein
- p.Arg830Pro
- Coding
- c.2489G>C
- MANE Select
- NM_199355
- dbSNP
- rs1035878515
- Type
- single nucleotide variant
- Location
- chr16:77319892 (GRCh38)
- Gene constraint
- LOEUF 1.055 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 73.83
- Residue 830
- the 'spacer' region
Similar variants
- ADAMTS18 p.Arg830Cys Likely benign ★★ ⚠ same residue
- ADAMTS18 p.Arg830His Uncertain significance ★ ⚠ same residue
- ADAMTS18 c.3006+1G>A Pathogenic/Likely pathogenic ★★ same type
- ADAMTS18 c.3007-1G>C Likely pathogenic ★★ same type
- ADAMTS18 p.Arg1009Ter Pathogenic/Likely pathogenic ★★ same type
- ADAMTS18 p.Arg1094Ter Pathogenic/Likely pathogenic ★★ same type
- ADAMTS18 p.Arg172Ter Pathogenic/Likely pathogenic ★★ same type
- ADAMTS18 p.Arg418Ter Pathogenic/Likely pathogenic ★★ 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/adamts18-p-arg830pro (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown