Is LMNB2 p.Ser492= (c.1476G>A) pathogenic?

LMNB2 p.Ser492= (c.1476G>A) is classified Likely benign in LMNB2 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-12-16). Very rare (popmax 0.00223%, eas); Associated with lipodystrophy, partial, acquired, susceptibility to.

How common is LMNB2 p.Ser492= (c.1476G>A) in the general population?

LMNB2 p.Ser492= (c.1476G>A) is very rare (popmax 0.00223%, eas) (gnomAD).

LMNB2 p.Ser492=

Q: What condition is associated with LMNB2 p.Ser492= (c.1476G>A)?

LMNB2 p.Ser492= (c.1476G>A) is associated with lipodystrophy, partial, acquired, susceptibility to, progressive myoclonic epilepsy type 9 (ClinVar).

c.1476G>A · rs758288742 · VCV1895886

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00223%, eas)

Conditions

lipodystrophy, partial, acquired, susceptibility to

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 -20	GERP -3.9
Overall
CADD	0.266	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00223% East Asian · 1/44,876 alleles

Filtering AF 0.000247% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000159%

Overall 0.000496% 8/1,613,438 alleles · very rare exomes 8/1,461,066 · genomes 0/152,372 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00223%	44,876
European (non-Finnish)	0.000593%	168,557

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: LMNB2
Protein: p.Ser492=
Coding: c.1476G>A
MANE Select: NM_032737
dbSNP: rs758288742
Type: single nucleotide variant
Location: chr19:2433832 (GRCh38)
Gene constraint: LOEUF 0.399 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 79.82 · 2 PDB
Residue 492: the 'tail' region; the ltd domain; a β-strand

Full LMNB2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

lipodystrophy, partial, acquired, susceptibility to — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: progressive myoclonic epilepsy type 9

Similar variants

LMNB2 p.Ser492Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
LMNB2 c.1202+5G>A Uncertain significance ★★ same condition
LMNB2 p.Ala178Thr Uncertain significance ★★ ⚠ same condition
LMNB2 p.Ala299Val Uncertain significance ★★ ⚠ same condition
LMNB2 p.Ala29Pro Uncertain significance ★★ ⚠ same condition
LMNB2 p.Ala567Thr Uncertain significance ★★ ⚠ same condition
LMNB2 p.Arg104Gly Uncertain significance ★★ ⚠ same condition
LMNB2 p.Arg114His 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/lmnb2-p-ser492 (accessed [today's date]).

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