Is CLN5 p.Pro337Ala (c.1009C>G) pathogenic?

CLN5 p.Pro337Ala (c.1009C>G) is classified Uncertain significance in CLN5 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-01-15). AlphaMissense: likely pathogenic (0.9254); Very rare (popmax 0.00223%, eas); Associated with neuronal ceroid lipofuscinosis.

What condition is associated with CLN5 p.Pro337Ala (c.1009C>G)?

CLN5 p.Pro337Ala (c.1009C>G) is associated with neuronal ceroid lipofuscinosis (ClinVar).

How common is CLN5 p.Pro337Ala (c.1009C>G) in the general population?

CLN5 p.Pro337Ala (c.1009C>G) is very rare (popmax 0.00223%, eas) (gnomAD).

What do computational predictors say about CLN5 p.Pro337Ala (c.1009C>G)?

AlphaMissense predicts likely pathogenic (score 0.9254) — an in-silico prediction, not a clinical call.

CLN5 p.Pro337Ala

c.1009C>G · rs1321520247 · VCV2083579

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9254 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00223%, eas)

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

neuronal ceroid lipofuscinosis

Computational evidence

Protein change
AlphaMissense	0.9254	likely pathogenic
REVEL	0.875	moderately pathogenic-leaning
SaProt	LLR -13.90	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 6	GERP 2.8, phastCons 1
Regional constraint	o/e 0.97	unconstrained · MANE · 8,867 bp · p 0.55 · regional, not allelic
Overall
CADD	24.7	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

Grpmax group 0.00223% East Asian · 1/44,750 alleles

Overall 0.000657% 1/152,134 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: CLN5
Protein: p.Pro337Ala
Coding: c.1009C>G
MANE Select: NM_006493
dbSNP: rs1321520247
Type: single nucleotide variant
Location: chr13:77000901 (GRCh38)
Gene constraint: LOEUF 1.197 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 83.05 · 1 PDB
Residue 337: the 'membrane-anchoring' region

Full CLN5 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

neuronal ceroid lipofuscinosis — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

CLN5 c.174-2A>G Likely pathogenic ★★ same condition
CLN5 p.Arg150Ter Pathogenic ★★ same condition
CLN5 p.Arg63His Pathogenic/Likely pathogenic ★★ ⚠ same condition
CLN5 p.Arg96Ter Pathogenic/Likely pathogenic ★★ same condition
CLN5 p.Asn143Ser Pathogenic/Likely pathogenic ★★ ⚠ same condition
CLN5 p.Cys77Tyr Likely pathogenic ★★ ⚠ same condition
CLN5 p.Gln183Ter Pathogenic/Likely pathogenic ★★ same condition
CLN5 p.Gln194Ter Pathogenic ★★ 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/cln5-p-pro337ala (accessed [today's date]).

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