Is SETX p.Arg1363Gln (c.4088G>A) pathogenic?

SETX p.Arg1363Gln (c.4088G>A) is classified Conflicting classifications of pathogenicity in SETX (ClinVar, Conflicting submitters, 3 submitters; last evaluated 2025-02-06). AlphaMissense: likely benign (0.069); Ultra-rare (popmax 0.0329%, mid); Associated with amyotrophic lateral sclerosis type 4.

What condition is associated with SETX p.Arg1363Gln (c.4088G>A)?

SETX p.Arg1363Gln (c.4088G>A) is associated with amyotrophic lateral sclerosis type 4, spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2 (ClinVar).

How common is SETX p.Arg1363Gln (c.4088G>A) in the general population?

SETX p.Arg1363Gln (c.4088G>A) is ultra-rare (popmax 0.0329%, mid) (gnomAD).

How is Amyotrophic lateral sclerosis type 4 inherited?

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

What do computational predictors say about SETX p.Arg1363Gln (c.4088G>A)?

AlphaMissense predicts likely benign (score 0.069) — an in-silico prediction, not a clinical call.

SETX p.Arg1363Gln

c.4088G>A · rs748262024 · VCV1737676

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 3 submitters

AlphaMissense

likely benign

0.069 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0329%, mid)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

amyotrophic lateral sclerosis type 4

Computational evidence

Protein change
AlphaMissense	0.069	likely benign
REVEL	0.208	benign-leaning
SaProt	LLR -6.67	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -1.3	GERP -3.5
Regional constraint	o/e 1.13	unconstrained · MANE · 3,399 bp · p 2.4e-06 · regional, not allelic
Overall
CADD	0.466	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 0.0329% Middle Eastern · 2/6,084 alleles

Filtering AF 0.0058% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00241%

Overall 0.00291% 47/1,613,864 alleles · ultra-rare exomes 42/1,461,720 · genomes 5/152,144 · joint denominator

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0329%	3,042
African / African-American	0.004%	24,971
European (non-Finnish)	0.00322%	31,053
East Asian	0.00223%	44,900
South Asian	0.0022%	45,542
Remaining individualsnot grpmax-eligible	0.0016%	62,482

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: SETX
Protein: p.Arg1363Gln
Coding: c.4088G>A
MANE Select: NM_015046
dbSNP: rs748262024
Type: single nucleotide variant
Location: chr9:132327510 (GRCh38)
Gene constraint: LOEUF 0.442 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 52.93
Residue 1363: the 'disordered' region

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

Disease context

amyotrophic lateral sclerosis type 4 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2

For Amyotrophic lateral sclerosis type 4 (Orphanet):

Inheritance: Autosomal dominant
Onset: Adolescent, Childhood

Similar variants

SETX p.Arg1363Ter Pathogenic ★★ same residue
SETX p.Arg111Ter Pathogenic ★★ same condition
SETX p.Arg1606Ter Pathogenic ★★ same condition
SETX p.Arg1778Ter Pathogenic/Likely pathogenic ★★ same condition
SETX p.Arg2098Ter Pathogenic ★★ same condition
SETX p.Arg332Trp Pathogenic/Likely pathogenic ★★ same condition
SETX p.Arg778Ter Pathogenic/Likely pathogenic ★★ same condition
SETX p.Gln1695Ter 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/setx-p-arg1363gln (accessed [today's date]).

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