Is DNAJC5 p.Cys133= (c.399C>T) pathogenic?

DNAJC5 p.Cys133= (c.399C>T) is classified Likely benign in DNAJC5 (ClinVar, Single submitter, 1 submitter; last evaluated 2026-01-08). Very rare (popmax 0.00133%, afr); Associated with neuronal ceroid lipofuscinosis.

What condition is associated with DNAJC5 p.Cys133= (c.399C>T)?

DNAJC5 p.Cys133= (c.399C>T) is associated with neuronal ceroid lipofuscinosis (ClinVar).

How common is DNAJC5 p.Cys133= (c.399C>T) in the general population?

DNAJC5 p.Cys133= (c.399C>T) is very rare (popmax 0.00133%, afr) (gnomAD).

DNAJC5 p.Cys133=

c.399C>T · VCV3633682

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00133%, afr)

Conditions

neuronal ceroid lipofuscinosis

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 -6.5	GERP -4.3
Overall
CADD	6.544	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00133% African / African-American · 1/74,952 alleles

Filtering AF 7.9e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 5.4e-05%

Overall 0.00031% 5/1,614,026 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00133%	74,952
European (non-Finnish)	0.000339%	295,012

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: DNAJC5
Protein: p.Cys133=
Coding: c.399C>T
MANE Select: NM_025219
Type: single nucleotide variant
Location: chr20:63930928 (GRCh38)
Gene constraint: LOEUF 0.205 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 74.09 · 2 PDB

Full DNAJC5 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

DNAJC5 p.Ala176Val Uncertain significance ★★ ⚠ same condition
DNAJC5 p.Ala26Thr Uncertain significance ★★ ⚠ same condition
DNAJC5 p.Ala54Thr Uncertain significance ★★ ⚠ same condition
DNAJC5 p.Ala54Val Uncertain significance ★★ ⚠ same condition
DNAJC5 p.Ala63Thr Uncertain significance ★★ ⚠ same condition
DNAJC5 p.Arg164Lys Uncertain significance ★★ ⚠ same condition
DNAJC5 p.Arg36Gln Uncertain significance ★★ ⚠ same condition
DNAJC5 p.Arg36Pro 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/dnajc5-p-cys133 (accessed [today's date]).

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