Is HTT p.Ala3095= (c.9285C>T) pathogenic?

HTT p.Ala3095= (c.9285C>T) is classified Likely benign in HTT (ClinVar, Single submitter, 1 submitter; last evaluated 2019-03-04). Absent from gnomAD v4.1; Associated with HTT-related disorder.

What condition is associated with HTT p.Ala3095= (c.9285C>T)?

HTT p.Ala3095= (c.9285C>T) is associated with HTT-related disorder (ClinVar).

How common is HTT p.Ala3095= (c.9285C>T) in the general population?

HTT p.Ala3095= (c.9285C>T) is absent from gnomAD v4.1 (gnomAD).

HTT p.Ala3095=

c.9285C>T · rs2474099874 · VCV3057577

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

HTT-related disorder

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 0.85	GERP 1.9, phastCons 0.29
Overall
CADD	10.97	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: HTT
Protein: p.Ala3095=
Coding: c.9285C>T
MANE Select: NM_001388492
dbSNP: rs2474099874
Type: single nucleotide variant
Location: chr4:3239915 (GRCh38)
Structure: AlphaFold pLDDT 85.38 · 30 PDB

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

Disease context

HTT-related disorder

Similar variants

HTT p.Ala3095Val Uncertain significance ★ same residue
HTT p.Phe1142= Likely benign ★★ same condition
HTT p.Pro2946= Likely benign ★★ same condition
HTT p.Val2008= Likely benign ★★ same condition
HTT p.Ala1089= Benign ★ same condition
HTT p.Ala2022= Likely benign ★ same condition
HTT p.Ala229Val Likely benign ★ same condition
HTT p.Ala2338= Likely benign ★ 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/htt-p-ala3095 (accessed [today's date]).

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