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COMP p.Arg672Ter

c.2014C>T · rs148554460 · VCV891939

Uncertain significance Multiple submitters
Classification
Uncertain significance
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
Consequence
nonsense (stop-gain)
predicted LoF
gnomAD v4.1
Rare
ultra-rare (popmax 0.0165%, mid)
Conditions
1
COMP-related disorder

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 17 of 19
Splicing
SpliceAI—not assessed · no allele here is in the release
Constraint at this position
ConservationphyloP 4.9GERP 0.84, 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 0.0165% Middle Eastern · 1/6,074 alleles
Filtering AF 0.000553% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000428%
Overall 0.00291% 47/1,613,928 alleles · ultra-rare
Ancestry group Frequency 1 in
Ashkenazi Jewishnot grpmax-eligible 0.0878% 1,139
Middle Easterngrpmax 0.0165% 6,074
Remaining individualsnot grpmax-eligible 0.0064% 15,621
Admixed American 0.00333% 29,999
East Asian 0.00223% 44,892
African / African-American 0.00133% 74,928
European (non-Finnish) 0.00102% 98,336

Ashkenazi Jewish 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.Arg672Ter
Coding
c.2014C>T
MANE Select
NM_000095
dbSNP
rs148554460
Type
single nucleotide variant
Location
chr19:18784264 (GRCh38)
Gene constraint
LOEUF 1.073 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure
AlphaFold pLDDT 88.60 · 1 PDB
Residue 672
the tsp c-terminal domain; the 'mediates cell survival and induction of the iap family of survival proteins' region; a disulfide bond
Full COMP gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

COMP-related disorder

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-arg672ter (accessed [today's date]).

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