Is DTHD1 p.Arg326= (c.976C>A) pathogenic?

DTHD1 p.Arg326= (c.976C>A) is classified Likely benign in DTHD1 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-04-15). Absent from gnomAD v4.1.

How common is DTHD1 p.Arg326= (c.976C>A) in the general population?

DTHD1 p.Arg326= (c.976C>A) is absent from gnomAD v4.1 (gnomAD).

DTHD1 p.Arg326=

c.976C>A · rs369825204 · VCV2719987

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

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 0.67	GERP 0.72, phastCons 0.083
Overall
CADD	8.791	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: DTHD1
Protein: p.Arg326=
Coding: c.976C>A
MANE Select: NM_001170700
dbSNP: rs369825204
Type: single nucleotide variant
Location: chr4:36290461 (GRCh38)
Gene constraint: LOEUF 1.034 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 69.99
Residue 326: the zu5 2 domain

Full DTHD1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

DTHD1 p.Arg326Gln Uncertain significance ★★ ⚠ same residue
DTHD1 p.Arg326Trp Uncertain significance ★ ⚠ same residue
DTHD1 c.1218+1G>A Uncertain significance ★★ same type
DTHD1 c.1219-2A>G Uncertain significance ★★ same type
DTHD1 p.Ala552Ser Uncertain significance ★★ ⚠ same type
DTHD1 p.Ala811Asp Uncertain significance ★★ ⚠ same type
DTHD1 p.Arg371Cys Uncertain significance ★★ ⚠ same type
DTHD1 p.Arg447Gln Uncertain significance ★★ ⚠ same type

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/dthd1-p-arg326 (accessed [today's date]).

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