Is CEP170 p.Ser181Ala (c.541T>G) pathogenic?

CEP170 p.Ser181Ala (c.541T>G) is classified Uncertain significance in CEP170 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-11-19). AlphaMissense: likely benign (0.0737); Very rare (popmax 0.00134%, afr).

How common is CEP170 p.Ser181Ala (c.541T>G) in the general population?

CEP170 p.Ser181Ala (c.541T>G) is very rare (popmax 0.00134%, afr) (gnomAD).

What do computational predictors say about CEP170 p.Ser181Ala (c.541T>G)?

AlphaMissense predicts likely benign (score 0.0737) — an in-silico prediction, not a clinical call.

CEP170 p.Ser181Ala

c.541T>G · VCV4652302

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0737 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00134%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0737	likely benign
REVEL	0.111	moderately benign-leaning
SaProt	LLR -7.28	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 8	GERP 1.7, phastCons 1
Regional constraint	o/e 0.42	unconstrained · MANE · 34 kb · p 4.7e-24 · regional, not allelic
Overall
CADD	18.9	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — 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

Grpmax group 0.00134% African / African-American · 1/74,888 alleles

Overall 6.85e-05% 1/1,459,850 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: CEP170
Protein: p.Ser181Ala
Coding: c.541T>G
MANE Select: NM_014812
Type: single nucleotide variant
Location: chr1:243199150 (GRCh38)
Gene constraint: LOEUF 0.261 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 46.25 · 1 PDB

Full CEP170 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CEP170 p.Val1524Met Uncertain significance ★★ ⚠ same type
CEP170 c.4319+9A>T Benign ★★ same type
CEP170 p.Met1275Val Benign ★★ same type
CEP170 p.Tyr1291= Benign/Likely benign ★★ same type
CEP170 c.195+1G>A Uncertain significance ★ same type
CEP170 p.Ala1163Val Uncertain significance ★ ⚠ same type
CEP170 p.Ala1310Thr Uncertain significance ★ ⚠ same type
CEP170 p.Ala1392Gly 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/cep170-p-ser181ala (accessed [today's date]).

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