Is DNHD1 p.Ala170Val (c.509C>T) pathogenic?

DNHD1 p.Ala170Val (c.509C>T) is classified Uncertain significance in DNHD1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-10-28). AlphaMissense: likely benign (0.1887); Very rare (popmax 6.84e-05%).

How common is DNHD1 p.Ala170Val (c.509C>T) in the general population?

DNHD1 p.Ala170Val (c.509C>T) is very rare (popmax 6.84e-05%) (gnomAD).

What do computational predictors say about DNHD1 p.Ala170Val (c.509C>T)?

AlphaMissense predicts likely benign (score 0.1887) — an in-silico prediction, not a clinical call.

DNHD1 p.Ala170Val

c.509C>T · VCV4661520

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1887 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 6.84e-05%)

Missense predictors

0/2 damaging

AlphaMissense, REVEL

Computational evidence

Protein change
AlphaMissense	0.1887	likely benign
REVEL	0.081	moderately benign-leaning
⇒ AlphaMissense and REVEL both call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Pangolin	Δ0.20	gain · loss 0.00 · not in the SpliceAI release · independent
Constraint at this position
Conservation	phyloP 0.78	GERP 0.6, phastCons 0.22
Regional constraint	o/e 0.90	unconstrained · MANE · 66 kb · p 5.3e-11 · regional, not allelic
Overall
CADD	22.6	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — 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 6.84e-05%

Overall 6.84e-05% 1/1,461,838 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: DNHD1
Protein: p.Ala170Val
Coding: c.509C>T
MANE Select: NM_144666
Type: single nucleotide variant
Location: chr11:6498724 (GRCh38)
Gene constraint: LOEUF 0.897 · pLI <0.01 (gnomAD)

Full DNHD1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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DNHD1 p.Arg3978Ter Pathogenic/Likely pathogenic ★★ same type
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DNHD1 p.Glu1153Ter Pathogenic/Likely pathogenic ★★ same type
DNHD1 p.Tyr2166Ter Pathogenic/Likely pathogenic ★★ same type
DNHD1 p.Arg1582Trp Uncertain significance ★★ same type
DNHD1 p.Arg1873Ser Uncertain significance ★★ ⚠ same type
DNHD1 p.Arg2555Trp 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/dnhd1-p-ala170val (accessed [today's date]).

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