Is CCT5 p.Asp308= (c.924T>C) pathogenic?

CCT5 p.Asp308= (c.924T>C) is classified Likely benign in CCT5 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-12). Ultra-rare (popmax 0.0329%, mid); Associated with hereditary sensory and autonomic neuropathy with spastic paraplegia.

What condition is associated with CCT5 p.Asp308= (c.924T>C)?

CCT5 p.Asp308= (c.924T>C) is associated with hereditary sensory and autonomic neuropathy with spastic paraplegia (ClinVar).

How common is CCT5 p.Asp308= (c.924T>C) in the general population?

CCT5 p.Asp308= (c.924T>C) is ultra-rare (popmax 0.0329%, mid) (gnomAD).

CCT5 p.Asp308=

Q: How is Mutilating hereditary sensory neuropathy with spastic paraplegia inherited?

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

c.924T>C · rs376536268 · VCV2041557

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

ultra-rare (popmax 0.0329%, mid)

Conditions

hereditary sensory and autonomic neuropathy with spastic paraplegia

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 -4.8	GERP -5.4
Overall
CADD	1.624	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0329% Middle Eastern · 2/6,080 alleles

Filtering AF 0.0058% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00241%

Overall 0.00248% 40/1,613,832 alleles · ultra-rare

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0329%	3,040
Remaining individualsnot grpmax-eligible	0.0064%	15,621
European (non-Finnish)	0.00288%	34,699

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: CCT5
Protein: p.Asp308=
Coding: c.924T>C
MANE Select: NM_012073
dbSNP: rs376536268
Type: single nucleotide variant
Location: chr5:10260842 (GRCh38)
Gene constraint: LOEUF 0.235 · pLI 1.00 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 89.34 · 75 PDB
Residue 308: an α-helix

Full CCT5 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

hereditary sensory and autonomic neuropathy with spastic paraplegia — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Mutilating hereditary sensory neuropathy with spastic paraplegia (Orphanet):

Inheritance: Autosomal recessive
Onset: Childhood, Infancy

Similar variants

CCT5 c.531-3C>T Uncertain significance ★★ same condition
CCT5 c.*1126T>A Uncertain significance ★★ same condition
CCT5 c.*567G>A Uncertain significance ★★ same condition
CCT5 p.Ala246Val Uncertain significance ★★ ⚠ same condition
CCT5 p.Ala41Gly Uncertain significance ★★ ⚠ same condition
CCT5 p.Ala424Ser Uncertain significance ★★ ⚠ same condition
CCT5 p.Arg142Cys Uncertain significance ★★ ⚠ same condition
CCT5 p.Arg400Leu 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/cct5-p-asp308 (accessed [today's date]).

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