Is ABCA2 p.Val1635fs (c.4903del) pathogenic?

ABCA2 p.Val1635fs (c.4903del) is classified Pathogenic in ABCA2 (ClinVar, Single submitter, 2 submitters; last evaluated 2018-09-01). Absent from gnomAD; Associated with Ataxia with Dysarthria.

What condition is associated with ABCA2 p.Val1635fs (c.4903del)?

ABCA2 p.Val1635fs (c.4903del) is associated with Ataxia with Dysarthria (ClinVar).

How common is ABCA2 p.Val1635fs (c.4903del) in the general population?

ABCA2 p.Val1635fs (c.4903del) is absent from gnomAD (gnomAD).

ABCA2 p.Val1635fs

c.4903del · rs1588511352 · VCV637957

Pathogenic Single submitter

Classification

Pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 2 submitters

Consequence

frameshift

predicted LoF

gnomAD v4.1

Not reported

no gnomAD frequency available for this variant

Conditions

Ataxia with Dysarthria

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	frameshift	predicted loss-of-function in a LoF-intolerant gene
NMD	predicted	premature termination codon in exon 31 of 49
Splicing
SpliceAI	—	not assessed · substitutions only
Constraint at this position
Conservation	phyloP 6.8	GERP 1.5, phastCons 1

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

dbSNP / gnomAD

No gnomAD frequency available for this variant. 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: ABCA2
Protein: p.Val1635fs
Coding: c.4903del
MANE Select: NM_001606
dbSNP: rs1588511352
Type: Deletion
Location: chr9:137012890 (GRCh38)
Gene constraint: LOEUF 0.436 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 71.46
Residue 1635: a UniProt-annotated variant site (in idpogsa)

Full ABCA2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Ataxia with Dysarthria

Similar variants

ABCA2 p.Val1635Glu Uncertain significance ★ ⚠ same residue
ABCA2 p.Gln1370Ter Likely pathogenic ★★ same condition
ABCA2 p.Ala1357Thr Uncertain significance ★★ ⚠ same condition
ABCA2 p.Arg2392Gln Uncertain significance ★★ ⚠ same condition
ABCA2 p.Glu1515Lys Uncertain significance ★★ ⚠ same condition
ABCA2 p.Ser1427Arg Uncertain significance ★★ ⚠ same condition
ABCA2 p.Arg2298Trp Uncertain significance ★ ⚠ same condition
ABCA2 p.Arg926Trp 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/abca2-p-val1635fs (accessed [today's date]).

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