Is CEMIP2 p.Val998Ala (c.2993T>C) pathogenic?

CEMIP2 p.Val998Ala (c.2993T>C) is classified Uncertain significance in CEMIP2 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-10-14). AlphaMissense: likely pathogenic (0.6952); Ultra-rare (popmax 0.0986%, mid).

How common is CEMIP2 p.Val998Ala (c.2993T>C) in the general population?

CEMIP2 p.Val998Ala (c.2993T>C) is ultra-rare (popmax 0.0986%, mid) (gnomAD).

What do computational predictors say about CEMIP2 p.Val998Ala (c.2993T>C)?

AlphaMissense predicts likely pathogenic (score 0.6952) — an in-silico prediction, not a clinical call.

CEMIP2 p.Val998Ala

c.2993T>C · rs758114022 · VCV3142183

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.6952 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0986%, mid)

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.6952	likely pathogenic
REVEL	0.424	indeterminate
SaProt	LLR -7.80	tolerated
⇒ AlphaMissense calls this damaging; SaProt does not; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 6.8, phastCons 1
Regional constraint	o/e 0.94	unconstrained · MANE · 65 kb · p 0.015 · regional, not allelic
Overall
CADD	23.9	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0986% Middle Eastern · 6/6,084 alleles

Filtering AF 0.0429% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0293%

Overall 0.00236% 38/1,612,854 alleles · ultra-rare

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0986%	1,014
European (non-Finnish)	0.00246%	40,659
Admixed American	0.00167%	59,928
Remaining individualsnot grpmax-eligible	0.0016%	62,438
African / African-American	0.00134%	74,902

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: CEMIP2
Protein: p.Val998Ala
Coding: c.2993T>C
MANE Select: NM_013390
dbSNP: rs758114022
Type: single nucleotide variant
Location: chr9:71704796 (GRCh38)
Gene constraint: LOEUF 0.588 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 89.66 · 1 PDB
Residue 998: a β-strand

Full CEMIP2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CEMIP2 p.Asp164Val Uncertain significance ★★ ⚠ same type
CEMIP2 p.Cys453Tyr Pathogenic ★ same type
CEMIP2 p.Trp1048Ter Pathogenic ★ same type
CEMIP2 c.2399+1G>A Uncertain significance ★ same type
CEMIP2 p.Ala1134Gly Uncertain significance ★ ⚠ same type
CEMIP2 p.Ala1168Val Uncertain significance ★ ⚠ same type
CEMIP2 p.Ala186Val Uncertain significance ★ ⚠ same type
CEMIP2 p.Ala191Gly 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/cemip2-p-val998ala (accessed [today's date]).

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