Is GBA2 p.Asp280= (c.840C>T) pathogenic?

GBA2 p.Asp280= (c.840C>T) is classified Likely benign in GBA2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2023-11-29). Very rare (popmax 0.00891%, eas); Associated with Spastic paraplegia.

What condition is associated with GBA2 p.Asp280= (c.840C>T)?

GBA2 p.Asp280= (c.840C>T) is associated with Spastic paraplegia (ClinVar).

How common is GBA2 p.Asp280= (c.840C>T) in the general population?

GBA2 p.Asp280= (c.840C>T) is very rare (popmax 0.00891%, eas) (gnomAD).

GBA2 p.Asp280=

c.840C>T · rs372070908 · VCV528035

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00891%, eas)

Conditions

Spastic paraplegia

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 -4.7	GERP -3.5
Overall
CADD	0.212	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00891% East Asian · 4/44,892 alleles

Filtering AF 0.00359% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00255%

Overall 0.00266% 43/1,613,814 alleles · very rare exomes 39/1,461,710 · genomes 4/152,104 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00891%	11,223
South Asian	0.00769%	13,011
Remaining individualsnot grpmax-eligible	0.0048%	20,829
African / African-American	0.00401%	24,956
European (non-Finnish)	0.0022%	45,380

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: GBA2
Protein: p.Asp280=
Coding: c.840C>T
MANE Select: NM_020944
dbSNP: rs372070908
Type: single nucleotide variant
Location: chr9:35741011 (GRCh38)
Gene constraint: LOEUF 0.773 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 89.77
Residue 280: a UniProt-annotated variant site (in spg46; loss of glucosylceramide catabolic process)

Full GBA2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Spastic paraplegia — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

GBA2 p.Arg234Ter Pathogenic ★★ same condition
GBA2 p.Arg340Ter Pathogenic ★★ same condition
GBA2 p.Arg574Ter Pathogenic ★★ same condition
GBA2 p.Ala187Thr Uncertain significance ★★ ⚠ same condition
GBA2 p.Arg215His Uncertain significance ★★ ⚠ same condition
GBA2 p.Arg514Cys Uncertain significance ★★ ⚠ same condition
GBA2 p.Arg575Gln Uncertain significance ★★ ⚠ same condition
GBA2 p.Arg575Trp 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/gba2-p-asp280 (accessed [today's date]).

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