Is ASPDH p.Arg181His (c.542G>A) pathogenic?

ASPDH p.Arg181His (c.542G>A) is classified Uncertain significance in ASPDH (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-27). AlphaMissense: ambiguous (0.3456); Very rare (popmax 0.00858%, amr).

How common is ASPDH p.Arg181His (c.542G>A) in the general population?

ASPDH p.Arg181His (c.542G>A) is very rare (popmax 0.00858%, amr) (gnomAD).

What do computational predictors say about ASPDH p.Arg181His (c.542G>A)?

AlphaMissense predicts ambiguous (score 0.3456) — an in-silico prediction, not a clinical call.

ASPDH p.Arg181His

c.542G>A · VCV4155316

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.3456 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00858%, amr)

Missense predictors

1/2 damaging

REVEL, SaProt · AlphaMissense no call

Computational evidence

Protein change
AlphaMissense	0.3456	ambiguous
REVEL	0.215	benign-leaning
SaProt	LLR -12.42	damaging
⇒ SaProt calls this damaging; REVEL does not; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.7	GERP 0.98, phastCons 1
Regional constraint	o/e 1.05	unconstrained · MANE · 2,090 bp · p 0.32 · regional, not allelic
Overall
CADD	28.9	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00858% Admixed American · 5/58,296 alleles

Filtering AF 0.00333% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00212%

Overall 0.00208% 30/1,443,684 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00858%	11,659
African / African-American	0.00267%	37,409
East Asian	0.00223%	44,814
European (non-Finnish)	0.00188%	53,288

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: ASPDH
Protein: p.Arg181His
Coding: c.542G>A
MANE Select: NM_001114598
Type: single nucleotide variant
Location: chr19:50512471 (GRCh38)
Gene constraint: LOEUF 1.216 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 93.88

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

Similar variants

ASPDH p.Ala120Thr Uncertain significance ★ ⚠ same type
ASPDH p.Ala127Thr Uncertain significance ★ ⚠ same type
ASPDH p.Ala139Glu Uncertain significance ★ ⚠ same type
ASPDH p.Ala187Val Uncertain significance ★ ⚠ same type
ASPDH p.Ala195Glu Uncertain significance ★ ⚠ same type
ASPDH p.Ala241Thr Uncertain significance ★ ⚠ same type
ASPDH p.Ala85Glu Uncertain significance ★ ⚠ same type
ASPDH p.Arg158Gln 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/aspdh-p-arg181his (accessed [today's date]).

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