Is AMACR p.Arg342= (c.1026G>A) pathogenic?

AMACR p.Arg342= (c.1026G>A) is classified Likely benign in AMACR (ClinVar, Single submitter, 1 submitter; last evaluated 2022-11-22). Very rare (popmax 0.00267%, afr); Associated with alpha-methylacyl-CoA racemase deficiency.

What condition is associated with AMACR p.Arg342= (c.1026G>A)?

AMACR p.Arg342= (c.1026G>A) is associated with alpha-methylacyl-CoA racemase deficiency (ClinVar).

How common is AMACR p.Arg342= (c.1026G>A) in the general population?

AMACR p.Arg342= (c.1026G>A) is very rare (popmax 0.00267%, afr) (gnomAD).

AMACR p.Arg342=

c.1026G>A · rs1753394786 · VCV2809657

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00267%, afr)

Conditions

alpha-methylacyl-CoA racemase 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 -0.35	GERP -3.4
Overall
CADD	10.61	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00267% African / African-American · 2/74,868 alleles

Filtering AF 0.000443% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000166%

Overall 0.000372% 6/1,613,980 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00267%	37,434
European (non-Finnish)	0.000339%	295,010

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: AMACR
Protein: p.Arg342=
Coding: c.1026G>A
MANE Select: NM_014324
dbSNP: rs1753394786
Type: single nucleotide variant
Location: chr5:33989216 (GRCh38)
Gene constraint: LOEUF 1.239 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 95.79

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

Disease context

alpha-methylacyl-CoA racemase deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

AMACR p.Arg342Thr Uncertain significance ★★ ⚠ same residue
AMACR p.Ser52Pro Pathogenic/Likely pathogenic ★★ same condition
AMACR c.*233T>C Uncertain significance ★★ same condition
AMACR p.Ala15Pro Uncertain significance ★★ ⚠ same condition
AMACR p.Ala189Glu Uncertain significance ★★ ⚠ same condition
AMACR p.Arg106Lys Uncertain significance ★★ ⚠ same condition
AMACR p.Arg171Cys Uncertain significance ★★ ⚠ same condition
AMACR p.Arg171His 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/amacr-p-arg342 (accessed [today's date]).

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