Is APOC2 p.Met1Val (c.1A>G) pathogenic?

APOC2 p.Met1Val (c.1A>G) is classified Likely pathogenic in APOC2 (ClinVar, Single submitter, 2 submitters). Very rare (popmax 8.48e-05%, nfe); Associated with familial apolipoprotein C-II deficiency.

What condition is associated with APOC2 p.Met1Val (c.1A>G)?

APOC2 p.Met1Val (c.1A>G) is associated with familial apolipoprotein C-II deficiency (ClinVar).

How common is APOC2 p.Met1Val (c.1A>G) in the general population?

APOC2 p.Met1Val (c.1A>G) is very rare (popmax 8.48e-05%, nfe) (gnomAD).

APOC2 p.Met1Val

c.1A>G · rs120074112 · VCV2579

Likely pathogenic Single submitter

Classification

Likely pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 2 submitters

Consequence

start-loss

predicted LoF

gnomAD v4.1

Rare

very rare (popmax 8.48e-05%, nfe)

Conditions

familial apolipoprotein C-II deficiency

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	start-loss	predicted loss-of-function
REVEL	0.771	pathogenic-leaning
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 8.2	GERP 1, phastCons 1
Overall
CADD	22.8	PHRED · 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 8.48e-05% European (non-Finnish) · 1/1,179,804 alleles

Overall 6.84e-05% 1/1,461,650 alleles · very rare

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: APOC2
Protein: p.Met1Val
Coding: c.1A>G
MANE Select: NM_000483
dbSNP: rs120074112
Type: single nucleotide variant
Location: chr19:44948479 (GRCh38)
Gene constraint: LOEUF 1.054 · pLI 0.07 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 65.81 · 4 PDB

Full APOC2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

familial apolipoprotein C-II deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

APOC2 p.Gln92Ter Pathogenic/Likely pathogenic ★★ same condition
APOC2 p.Ala54Asp Uncertain significance ★★ ⚠ same condition
APOC2 p.Ala55Thr Uncertain significance ★★ ⚠ same condition
APOC2 p.Thr23Ile Uncertain significance ★★ ⚠ same condition
APOC2 p.Thr86Arg Uncertain significance ★★ ⚠ same condition
APOC2 c.56-4G>C Benign ★★ same condition
APOC2 p.Glu60Lys Benign/Likely benign ★★ same condition
APOC2 c.216-1G>A Pathogenic ★ same condition

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/apoc2-p-met1val (accessed [today's date]).

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