Is CERS1 p.Ser157Asn (c.470G>A) pathogenic?

CERS1 p.Ser157Asn (c.470G>A) is classified Uncertain significance in CERS1 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-05-06). AlphaMissense: likely pathogenic (0.9761); Absent from gnomAD v4.1; Associated with progressive myoclonic epilepsy type 8.

What condition is associated with CERS1 p.Ser157Asn (c.470G>A)?

CERS1 p.Ser157Asn (c.470G>A) is associated with progressive myoclonic epilepsy type 8 (ClinVar).

How common is CERS1 p.Ser157Asn (c.470G>A) in the general population?

CERS1 p.Ser157Asn (c.470G>A) is absent from gnomAD v4.1 (gnomAD).

How is Progressive myoclonic epilepsy type 8 inherited?

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

What do computational predictors say about CERS1 p.Ser157Asn (c.470G>A)?

AlphaMissense predicts likely pathogenic (score 0.9761) — an in-silico prediction, not a clinical call.

CERS1 p.Ser157Asn

c.470G>A · rs2146033428 · VCV1348675

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.9761 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

progressive myoclonic epilepsy type 8

Computational evidence

Protein change
AlphaMissense	0.9761	likely pathogenic · top 6% in CERS1
REVEL	0.754	pathogenic-leaning
SaProt	LLR -14.47	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.3	GERP 1.1, phastCons 1
Regional constraint	o/e 1.00	unconstrained · MANE · 25 kb · p 1 · regional, not allelic
Overall
CADD	26.5	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: CERS1
Protein: p.Ser157Asn
Coding: c.470G>A
MANE Select: NM_021267
dbSNP: rs2146033428
Type: single nucleotide variant
Location: chr19:18884207 (GRCh38)
Gene constraint: LOEUF 0.685 · pLI 0.17 (gnomAD)
Structure: AlphaFold pLDDT 88.95
Residue 157: a UniProt-annotated variant site (in epm8); the tlc domain

Full CERS1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

progressive myoclonic epilepsy type 8 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Progressive myoclonic epilepsy type 8 (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Childhood

Similar variants

CERS1 p.Ala117Ser Uncertain significance ★★ ⚠ same condition
CERS1 p.Ala165Thr Uncertain significance ★★ ⚠ same condition
CERS1 p.Ala266Val Uncertain significance ★★ ⚠ same condition
CERS1 p.Ala286Val Uncertain significance ★★ ⚠ same condition
CERS1 p.Ala304Val Uncertain significance ★★ ⚠ same condition
CERS1 p.Ala45Pro Uncertain significance ★★ ⚠ same condition
CERS1 p.Ala86Val Uncertain significance ★★ ⚠ same condition
CERS1 p.Ala97Thr 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/cers1-p-ser157asn (accessed [today's date]).

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