Is ACP5 p.Arg129Cys (c.385C>T) pathogenic?

ACP5 p.Arg129Cys (c.385C>T) is classified Uncertain significance in ACP5 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-06-17). AlphaMissense: likely pathogenic (0.6367); Ultra-rare (popmax 0.0134%, eas); Associated with Spondyloenchondrodysplasia with immune dysregulation.

What condition is associated with ACP5 p.Arg129Cys (c.385C>T)?

ACP5 p.Arg129Cys (c.385C>T) is associated with Spondyloenchondrodysplasia with immune dysregulation (ClinVar).

How common is ACP5 p.Arg129Cys (c.385C>T) in the general population?

ACP5 p.Arg129Cys (c.385C>T) is ultra-rare (popmax 0.0134%, eas) (gnomAD).

What do computational predictors say about ACP5 p.Arg129Cys (c.385C>T)?

AlphaMissense predicts likely pathogenic (score 0.6367) — an in-silico prediction, not a clinical call.

ACP5 p.Arg129Cys

c.385C>T · rs765343526 · VCV1917834

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.6367 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0134%, eas)

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Spondyloenchondrodysplasia with immune dysregulation

Computational evidence

Protein change
AlphaMissense	0.6367	likely pathogenic
REVEL	0.612	indeterminate
SaProt	LLR -15.28	damaging
⇒ AlphaMissense and SaProt both call this damaging; REVEL makes no call.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · G>C here scores Δ0.34 · evaluated, not missing
Constraint at this position
Conservation	phyloP 12	GERP 1.4, phastCons 1
Regional constraint	o/e 0.84	unconstrained · MANE · 2,304 bp · p 0.00091 · regional, not allelic
Overall
CADD	33.0	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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 0.0134% East Asian · 6/44,884 alleles

Filtering AF 0.00579% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00394%

Overall 0.00136% 22/1,613,902 alleles · ultra-rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.0134%	7,481
Finnishnot grpmax-eligible	0.00469%	21,339
Remaining individualsnot grpmax-eligible	0.0016%	62,484
South Asian	0.0011%	91,074
European (non-Finnish)	0.000932%	107,272

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: ACP5
Protein: p.Arg129Cys
Coding: c.385C>T
MANE Select: NM_001611
dbSNP: rs765343526
Type: single nucleotide variant
Location: chr19:11576720 (GRCh38)
Gene constraint: LOEUF 1.14 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 94.82 · 2 PDB
Residue 129: a β-strand

Full ACP5 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Spondyloenchondrodysplasia with immune dysregulation — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

ACP5 p.Arg129His Uncertain significance ★★ ⚠ same residue
ACP5 p.Arg129Leu Uncertain significance ★ ⚠ same residue
ACP5 p.Arg176Ter Pathogenic ★★ same condition
ACP5 p.Gln184Ter Pathogenic/Likely pathogenic ★★ same condition
ACP5 p.Gly109Arg Pathogenic/Likely pathogenic ★★ same condition
ACP5 p.Met264Lys Pathogenic/Likely pathogenic ★★ ⚠ same condition
ACP5 p.Tyr123Ter Pathogenic ★★ same condition
ACP5 p.Tyr246Ter Pathogenic/Likely pathogenic ★★ 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/acp5-p-arg129cys (accessed [today's date]).

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