Is DNAH3 p.Arg2812Trp (c.8434C>T) pathogenic?

DNAH3 p.Arg2812Trp (c.8434C>T) is classified Uncertain significance in DNAH3 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-04-18). AlphaMissense: likely benign (0.2398); Very rare (popmax 0.00585%, nfe).

How common is DNAH3 p.Arg2812Trp (c.8434C>T) in the general population?

DNAH3 p.Arg2812Trp (c.8434C>T) is very rare (popmax 0.00585%, nfe) (gnomAD).

What do computational predictors say about DNAH3 p.Arg2812Trp (c.8434C>T)?

AlphaMissense predicts likely benign (score 0.2398) — an in-silico prediction, not a clinical call.

DNAH3 p.Arg2812Trp

c.8434C>T · VCV4013042

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2398 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00585%, nfe)

Missense predictors

1/2 damaging

AlphaMissense, REVEL

Computational evidence

Protein change
AlphaMissense	0.2398	likely benign
REVEL	0.696	pathogenic-leaning
⇒ REVEL calls this damaging; AlphaMissense does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.6	GERP 0.9, phastCons 0.92
Overall
CADD	22.5	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM R2858W vs ClinVar R2812W) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00585% European (non-Finnish) · 69/1,178,952 alleles

Filtering AF 0.0047% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00431%

Overall 0.00496% 80/1,612,334 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.00801%	12,482
European (non-Finnish)grpmax	0.00585%	17,086
South Asian	0.0044%	22,720
Finnishnot grpmax-eligible	0.00156%	64,004
African / African-American	0.00134%	74,864

Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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: DNAH3
Protein: p.Arg2812Trp
Coding: c.8434C>T
MANE Select: NM_001347886
Type: single nucleotide variant
Location: chr16:20965312 (GRCh38)
Gene constraint: LOEUF 0.834 · pLI <0.01 (gnomAD)
Residue 2812: a UniProt-annotated variant site (found in a male with oligoasthenoteratozoospermia; uncertain significance; severely impaired sperm motility; multiple morphological abnormalities of the sperm flagella; partial loss and disintegration of the flagellar axoneme, accompanied by damage to the mitochondrial sheath); a UniProt-annotated variant site (found in a male with asthenoteratozoospermia; uncertain significance; severely impaired sperm motility; multiple morphological abnormalities of the sperm flagella; disorganization of flagellar components, notably inner dynein arms); the 'stalk' region

Full DNAH3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

DNAH3 p.Ala1918Gly Uncertain significance ★★ ⚠ same type
DNAH3 p.Arg1228Gln Uncertain significance ★★ same type
DNAH3 p.Arg635Gln Uncertain significance ★★ same type
DNAH3 p.Asn1728Ser Uncertain significance ★★ ⚠ same type
DNAH3 p.Asp3656Asn Uncertain significance ★★ same type
DNAH3 p.Leu2597Val Uncertain significance ★★ same type
DNAH3 p.Leu4044Phe Uncertain significance ★★ ⚠ same type
DNAH3 p.Lys374Gln 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/dnah3-p-arg2812trp (accessed [today's date]).

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