Is RANBP2 p.Ala579= (c.1737A>C) pathogenic?

RANBP2 p.Ala579= (c.1737A>C) is classified Likely benign in RANBP2 (ClinVar, Single submitter, 1 submitter; last evaluated 2026-01-04). Ultra-rare (popmax 0.0225%, nfe); Associated with familial acute necrotizing encephalopathy.

What condition is associated with RANBP2 p.Ala579= (c.1737A>C)?

RANBP2 p.Ala579= (c.1737A>C) is associated with familial acute necrotizing encephalopathy (ClinVar).

How common is RANBP2 p.Ala579= (c.1737A>C) in the general population?

RANBP2 p.Ala579= (c.1737A>C) is ultra-rare (popmax 0.0225%, nfe) (gnomAD).

How is Familial acute necrotizing encephalopathy inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

RANBP2 p.Ala579=

c.1737A>C · rs139276330 · VCV1126899

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

ultra-rare (popmax 0.0225%, nfe)

Conditions

familial acute necrotizing encephalopathy

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.5	GERP 0.38, phastCons 1
Overall
CADD	9.918	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0225% European (non-Finnish) · 265/1,179,864 alleles

Filtering AF 0.0202% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0194%

Overall 0.0174% 280/1,611,894 alleles · ultra-rare exomes 266/1,459,682 · genomes 14/152,212 · joint denominator

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.0225%	4,452
Remaining individualsnot grpmax-eligible	0.0209%	4,792
African / African-American	0.00267%	37,437

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: RANBP2
Protein: p.Ala579=
Coding: c.1737A>C
MANE Select: NM_006267
dbSNP: rs139276330
Type: single nucleotide variant
Location: chr2:108751976 (GRCh38)
Gene constraint: LOEUF 0.231 · pLI 1.00 (gnomAD)

Full RANBP2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

familial acute necrotizing encephalopathy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Familial acute necrotizing encephalopathy (Orphanet):

Inheritance: Autosomal dominant
Onset: Adolescent, Adult, Childhood, Infancy

Similar variants

RANBP2 p.Thr585Met Pathogenic/Likely pathogenic ★★ ⚠ same condition
RANBP2 c.406-2A>G Uncertain significance ★★ same condition
RANBP2 p.Ala2564Ser Uncertain significance ★★ ⚠ same condition
RANBP2 p.Ala3072Val Uncertain significance ★★ ⚠ same condition
RANBP2 p.Ala534Val Uncertain significance ★★ same condition
RANBP2 p.Ala836Val Uncertain significance ★★ ⚠ same condition
RANBP2 p.Arg1096Gln Uncertain significance ★★ ⚠ same condition
RANBP2 p.Arg1198Cys Uncertain significance ★★ 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/ranbp2-p-ala579 (accessed [today's date]).

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