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CEP104 p.Ala310Thr

c.928G>A · rs370867227 · VCV1418267

Uncertain significance Multiple submitters
Classification
Uncertain significance
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 3 submitters
AlphaMissense
likely benign
0.0723 · ACMG-weighted
gnomAD v4.1
Rare
very rare (popmax 0.00297%, nfe)
Missense predictors
0/3 damaging
AlphaMissense, REVEL, SaProt
Conditions
1
Joubert syndrome 25

Computational evidence

Protein change
AlphaMissense0.0723likely benign
REVEL0.025moderately benign-leaning
SaProtLLR -6.19tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI—not assessed · no allele here is in the release
Constraint at this position
ConservationphyloP -0.21GERP -1.6
Regional constrainto/e 0.91unconstrained · MANE · 37 kb · p 0.0023 · regional, not allelic
Overall
CADD5.248PHRED · 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 0.00297% European (non-Finnish) · 35/1,180,036 alleles
Filtering AF 0.00215% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00191%
Overall 0.00254% 41/1,613,992 alleles · very rare
Ancestry group Frequency 1 in
Finnishnot grpmax-eligible 0.00469% 21,335
European (non-Finnish)grpmax 0.00297% 33,715
Admixed American 0.00167% 59,986
Remaining individualsnot grpmax-eligible 0.0016% 62,482
African / African-American 0.00134% 74,898

Finnish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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
CEP104
Protein
p.Ala310Thr
Coding
c.928G>A
MANE Select
NM_014704
dbSNP
rs370867227
Type
single nucleotide variant
Location
chr1:3837483 (GRCh38)
Gene constraint
LOEUF 0.851 · pLI <0.01 (gnomAD)
Structure
AlphaFold pLDDT 76.75 · 2 PDB
Residue 310
a UniProt-annotated variant site (in mrt77)
Full CEP104 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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/cep104-p-ala310thr (accessed [today's date]).

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