Is ARSB p.Arg95Trp (c.283C>T) pathogenic?

ARSB p.Arg95Trp (c.283C>T) is classified Likely pathogenic in ARSB (ClinVar, Single submitter, 1 submitter; last evaluated 2023-05-24). AlphaMissense: likely pathogenic (0.9341); No allele count reported in gnomAD v4.1 (AN 1,490,180); Associated with mucopolysaccharidosis type 6.

What condition is associated with ARSB p.Arg95Trp (c.283C>T)?

ARSB p.Arg95Trp (c.283C>T) is associated with mucopolysaccharidosis type 6 (ClinVar).

How common is ARSB p.Arg95Trp (c.283C>T) in the general population?

ARSB p.Arg95Trp (c.283C>T) is no allele count reported in gnomAD v4.1 (AN 1,490,180) (gnomAD).

How is Mucopolysaccharidosis type 6 inherited?

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

What do computational predictors say about ARSB p.Arg95Trp (c.283C>T)?

AlphaMissense predicts likely pathogenic (score 0.9341) — an in-silico prediction, not a clinical call.

ARSB p.Arg95Trp

c.283C>T · rs1201268402 · VCV1510169

Likely pathogenic Single submitter

Classification

Likely pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9341 · ACMG-weighted

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,490,180)

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

mucopolysaccharidosis type 6

Computational evidence

Protein change
AlphaMissense	0.9341	likely pathogenic ✓ concordant with ClinVar · top 9% in ARSB
REVEL	0.963	strongly pathogenic-leaning
SaProt	LLR -14.82	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7	GERP -0.46, phastCons 1
Overall
CADD	29.7	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

No allele count reported in gnomAD v4.1 (AN 1,490,180). This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: ARSB
Protein: p.Arg95Trp
Coding: c.283C>T
MANE Select: NM_000046
dbSNP: rs1201268402
Type: single nucleotide variant
Location: chr5:78984966 (GRCh38)
Gene constraint: LOEUF 1.032 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 93.74 · 1 PDB
Residue 95: a UniProt-annotated variant site (in mps6; mild/severe form); an α-helix

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

Disease context

mucopolysaccharidosis type 6 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Mucopolysaccharidosis type 6 (Orphanet):

Inheritance: Autosomal recessive
Onset: Childhood
Prevalence: 1-9 / 1 000 000 (Europe)

Similar variants

ARSB p.Arg95Gln Pathogenic/Likely pathogenic ★★ same residue
ARSB p.Arg95Leu Likely pathogenic ★ same residue
ARSB p.Arg95= Likely benign ★ same residue
ARSB c.1142+1G>A Pathogenic ★★ same condition
ARSB c.1142+1G>T Pathogenic ★★ same condition
ARSB c.1142+2T>A Pathogenic/Likely pathogenic ★★ same condition
ARSB c.1142+2T>C Pathogenic ★★ same condition
ARSB c.1143-1G>A 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/arsb-p-arg95trp (accessed [today's date]).

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