Send feedback

COMP p.Arg698Ter

c.2092C>T · rs763098832 · VCV1510992

Uncertain significance Multiple submitters
Classification
Uncertain significance
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
Consequence
nonsense (stop-gain)
predicted LoF
gnomAD v4.1
Rare
very rare (popmax 0.000254%, nfe)
Conditions
1
multiple epiphyseal dysplasia type 1

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequencenonsense (stop-gain)predicted loss-of-function
NMDpredictedpremature termination codon in exon 18 of 19
Splicing
SpliceAI—not assessed · no allele here is in the release
Constraint at this position
ConservationphyloP 3.2GERP -4, phastCons 1
Overall
CADD40.0PHRED · no single calibrated threshold — expert panels disagree

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.000254% European (non-Finnish) · 3/1,179,974 alleles
Filtering AF 6.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.9e-05%
Overall 0.000275% 4/1,455,158 alleles · very rare
Ancestry group Frequency 1 in
Remaining individualsnot grpmax-eligible 0.0016% 62,464
European (non-Finnish)grpmax 0.000254% 393,324

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
COMP
Protein
p.Arg698Ter
Coding
c.2092C>T
MANE Select
NM_000095
dbSNP
rs763098832
Type
single nucleotide variant
Location
chr19:18783189 (GRCh38)
Gene constraint
LOEUF 1.073 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure
AlphaFold pLDDT 88.60 · 1 PDB
Residue 698
the tsp c-terminal domain; the 'mediates cell survival and induction of the iap family of survival proteins' region; a β-strand; a disulfide bond
Full COMP gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

multiple epiphyseal dysplasia type 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Multiple epiphyseal dysplasia type 1 (Orphanet):

Inheritance
Autosomal dominant
Onset
Childhood

Similar variants

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/comp-p-arg698ter (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown