Is SETX p.Phe1772Ser (c.5315T>C) pathogenic?

SETX p.Phe1772Ser (c.5315T>C) is classified Uncertain significance in SETX (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-12-29). AlphaMissense: likely benign (0.1242); Very rare (popmax 0.0011%, sas); Associated with spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2.

How common is SETX p.Phe1772Ser (c.5315T>C) in the general population?

SETX p.Phe1772Ser (c.5315T>C) is very rare (popmax 0.0011%, sas) (gnomAD).

What do computational predictors say about SETX p.Phe1772Ser (c.5315T>C)?

AlphaMissense predicts likely benign (score 0.1242) — an in-silico prediction, not a clinical call.

SETX p.Phe1772Ser

Q: What condition is associated with SETX p.Phe1772Ser (c.5315T>C)?

SETX p.Phe1772Ser (c.5315T>C) is associated with spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2, amyotrophic lateral sclerosis type 4 (ClinVar).

Q: How is Spinocerebellar ataxia with axonal neuropathy type 2 inherited?

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

c.5315T>C · rs886063552 · VCV365350

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

likely benign

0.1242 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.0011%, sas)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Conditions

spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2

Computational evidence

Protein change
AlphaMissense	0.1242	likely benign
REVEL	0.504	indeterminate
SaProt	LLR -7.14	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL is indeterminate.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.4	GERP -0.47, phastCons 1
Regional constraint	o/e 0.88	unconstrained · MANE · 29 kb · p 0.045 · regional, not allelic
Overall
CADD	14.43	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 0.0011% South Asian · 1/91,060 alleles

Overall 6.2e-05% 1/1,613,828 alleles · very rare exomes 1/1,461,490 · genomes 0/152,338 · joint denominator

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.Phe1772Ser
Coding: c.5315T>C
MANE Select: NM_015046
dbSNP: rs886063552
Type: single nucleotide variant
Location: chr9:132311816 (GRCh38)
Gene constraint: LOEUF 0.442 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 52.93

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

Disease context

spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: amyotrophic lateral sclerosis type 4

For Spinocerebellar ataxia with axonal neuropathy type 2 (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Adult, Childhood
Prevalence: 1-9 / 1 000 000 (France)

Similar variants

SETX p.Arg111Ter Pathogenic ★★ same condition
SETX p.Arg1363Ter 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-phe1772ser (accessed [today's date]).

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