Is ACADS p.Arg23= (c.67C>A) pathogenic?

ACADS p.Arg23= (c.67C>A) is classified Likely benign in ACADS (ClinVar, Single submitter, 1 submitter; last evaluated 2025-12-16). Very rare (popmax 0.00935%, afr); Associated with short chain acyl-CoA dehydrogenase deficiency.

What condition is associated with ACADS p.Arg23= (c.67C>A)?

ACADS p.Arg23= (c.67C>A) is associated with short chain acyl-CoA dehydrogenase deficiency (ClinVar).

How common is ACADS p.Arg23= (c.67C>A) in the general population?

ACADS p.Arg23= (c.67C>A) is very rare (popmax 0.00935%, afr) (gnomAD).

How is Short chain acyl-CoA dehydrogenase deficiency inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

ACADS p.Arg23=

c.67C>A · VCV4747289

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00935%, afr)

Conditions

short chain acyl-CoA dehydrogenase deficiency

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.75	GERP -0.47, phastCons 0.96
Overall
CADD	12.76	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00935% African / African-American · 7/74,894 alleles

Filtering AF 0.00437% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00309%

Overall 0.000743% 12/1,613,996 alleles · very rare exomes 6/1,461,854 · genomes 6/152,142 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00935%	10,699
Admixed American	0.005%	20,003
Remaining individualsnot grpmax-eligible	0.0032%	31,245

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: ACADS
Protein: p.Arg23=
Coding: c.67C>A
MANE Select: NM_000017
Type: single nucleotide variant
Location: chr12:120727046 (GRCh38)
Gene constraint: LOEUF 0.852 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 93.58 · 4 PDB

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

Disease context

short chain acyl-CoA dehydrogenase deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Short chain acyl-CoA dehydrogenase deficiency (Orphanet):

Inheritance: Autosomal recessive
Onset: Childhood, Infancy, Neonatal

Similar variants

ACADS p.Arg23Gln Uncertain significance ★ ⚠ same residue
ACADS p.Arg23Pro Uncertain significance ★ ⚠ same residue
ACADS p.Arg23Trp Uncertain significance ★ ⚠ same residue
ACADS c.211-2A>G Likely pathogenic ★★ same condition
ACADS c.625-1G>A Likely pathogenic ★★ same condition
ACADS c.795+1G>A Pathogenic/Likely pathogenic ★★ same condition
ACADS p.Ala199Val Likely pathogenic ★★ same condition
ACADS p.Arg107Cys 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/acads-p-arg23 (accessed [today's date]).

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