Is ACD p.Asp255Tyr (c.763G>T) pathogenic?

ACD p.Asp255Tyr (c.763G>T) is classified Uncertain significance in ACD (ClinVar, Single submitter, 1 submitter; last evaluated 2024-06-11). AlphaMissense: likely benign (0.1274); Very rare (popmax 0.000345%, nfe); Associated with Inborn genetic diseases.

What condition is associated with ACD p.Asp255Tyr (c.763G>T)?

ACD p.Asp255Tyr (c.763G>T) is associated with Inborn genetic diseases (ClinVar).

How common is ACD p.Asp255Tyr (c.763G>T) in the general population?

ACD p.Asp255Tyr (c.763G>T) is very rare (popmax 0.000345%, nfe) (gnomAD).

What do computational predictors say about ACD p.Asp255Tyr (c.763G>T)?

AlphaMissense predicts likely benign (score 0.1274) — an in-silico prediction, not a clinical call.

ACD p.Asp255Tyr

c.763G>T · VCV3261559

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1274 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000345%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1274	likely benign
REVEL	0.046	moderately benign-leaning
SaProt	LLR -8.15	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Pangolin	Δ0.25	loss · gain 0.02 · not in the SpliceAI release · independent
Constraint at this position
Conservation	phyloP 0.48	GERP -2, phastCons 0.98
Regional constraint	o/e 0.89	unconstrained · MANE · 2,611 bp · p 0.011 · regional, not allelic
Overall
CADD	16.26	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 0.000345% European (non-Finnish) · 4/1,160,472 alleles

Filtering AF 8.1e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 5.4e-05%

Overall 0.000281% 4/1,424,786 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: ACD
Protein: p.Asp255Tyr
Coding: c.763G>T
MANE Select: NM_001082486
Type: single nucleotide variant
Location: chr16:67658621 (GRCh38)
Gene constraint: LOEUF 0.921 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 63.09 · 28 PDB

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

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

ACD p.Asp255Glu Uncertain significance ★ ⚠ same residue
ACD p.Asp255His Uncertain significance ★ ⚠ same residue
ACD p.Asp255= Likely benign ★★ same residue
ACD p.Asp255Gly Uncertain significance ★ ⚠ same residue
ACD c.-20C>T Uncertain significance ★★ same condition
ACD c.-26T>G Uncertain significance ★★ same condition
ACD c.-29C>A Uncertain significance ★★ same condition
ACD c.-30C>T Uncertain significance ★★ 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/acd-p-asp255tyr (accessed [today's date]).

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